From 77410b0cdde47219d6c6a36533fcb9354f17c3dd Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Wed, 6 Mar 2019 23:06:30 +0300
Subject: Use new setup for unit tests

---
 .../script/lexer+command-expansion.test.testscript | 248 +++++++++
 .../test/script/lexer+command-line.test.testscript | 208 ++++++++
 .../script/lexer+description-line.test.testscript  |  33 ++
 .../test/script/lexer+first-token.test.testscript  |  97 ++++
 .../test/script/lexer+second-token.test.testscript |  68 +++
 .../script/lexer+variable-line.test.testscript     |  28 ++
 build2/test/script/lexer+variable.test.testscript  |  70 +++
 build2/test/script/lexer.test.cxx                  |  85 ++++
 build2/test/script/parser+cleanup.test.testscript  |  58 +++
 .../test/script/parser+command-if.test.testscript  | 548 ++++++++++++++++++++
 .../script/parser+command-re-parse.test.testscript |  12 +
 .../test/script/parser+description.test.testscript | 486 ++++++++++++++++++
 .../test/script/parser+directive.test.testscript   |  74 +++
 build2/test/script/parser+exit.test.testscript     |  27 +
 .../test/script/parser+expansion.test.testscript   |  36 ++
 .../script/parser+here-document.test.testscript    | 213 ++++++++
 .../test/script/parser+here-string.test.testscript |  19 +
 build2/test/script/parser+include.test.testscript  | 104 ++++
 .../test/script/parser+pipe-expr.test.testscript   | 133 +++++
 .../test/script/parser+pre-parse.test.testscript   |  23 +
 build2/test/script/parser+redirect.test.testscript | 356 +++++++++++++
 build2/test/script/parser+regex.test.testscript    | 223 +++++++++
 build2/test/script/parser+scope-if.test.testscript | 554 +++++++++++++++++++++
 build2/test/script/parser+scope.test.testscript    | 280 +++++++++++
 .../script/parser+setup-teardown.test.testscript   | 151 ++++++
 build2/test/script/parser.test.cxx                 | 242 +++++++++
 build2/test/script/regex.test.cxx                  | 301 +++++++++++
 27 files changed, 4677 insertions(+)
 create mode 100644 build2/test/script/lexer+command-expansion.test.testscript
 create mode 100644 build2/test/script/lexer+command-line.test.testscript
 create mode 100644 build2/test/script/lexer+description-line.test.testscript
 create mode 100644 build2/test/script/lexer+first-token.test.testscript
 create mode 100644 build2/test/script/lexer+second-token.test.testscript
 create mode 100644 build2/test/script/lexer+variable-line.test.testscript
 create mode 100644 build2/test/script/lexer+variable.test.testscript
 create mode 100644 build2/test/script/lexer.test.cxx
 create mode 100644 build2/test/script/parser+cleanup.test.testscript
 create mode 100644 build2/test/script/parser+command-if.test.testscript
 create mode 100644 build2/test/script/parser+command-re-parse.test.testscript
 create mode 100644 build2/test/script/parser+description.test.testscript
 create mode 100644 build2/test/script/parser+directive.test.testscript
 create mode 100644 build2/test/script/parser+exit.test.testscript
 create mode 100644 build2/test/script/parser+expansion.test.testscript
 create mode 100644 build2/test/script/parser+here-document.test.testscript
 create mode 100644 build2/test/script/parser+here-string.test.testscript
 create mode 100644 build2/test/script/parser+include.test.testscript
 create mode 100644 build2/test/script/parser+pipe-expr.test.testscript
 create mode 100644 build2/test/script/parser+pre-parse.test.testscript
 create mode 100644 build2/test/script/parser+redirect.test.testscript
 create mode 100644 build2/test/script/parser+regex.test.testscript
 create mode 100644 build2/test/script/parser+scope-if.test.testscript
 create mode 100644 build2/test/script/parser+scope.test.testscript
 create mode 100644 build2/test/script/parser+setup-teardown.test.testscript
 create mode 100644 build2/test/script/parser.test.cxx
 create mode 100644 build2/test/script/regex.test.cxx

(limited to 'build2/test')

diff --git a/build2/test/script/lexer+command-expansion.test.testscript b/build2/test/script/lexer+command-expansion.test.testscript
new file mode 100644
index 0000000..03e3366
--- /dev/null
+++ b/build2/test/script/lexer+command-expansion.test.testscript
@@ -0,0 +1,248 @@
+# file      : build2/test/script/lexer+command-expansion.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+test.arguments = command-expansion
+
+: pass-redirect
+:
+{
+  : in
+  :
+  $* <:"0<|" >>EOO
+  '0'
+  <|
+  EOO
+
+  : arg-in
+  :
+  $* <:"0 <|" >>EOO
+  '0 '
+  <|
+  EOO
+
+  : out
+  :
+  $* <:"1>|" >>EOO
+  '1'
+  >|
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >|" >>EOO
+  '1 '
+  >|
+  EOO
+}
+
+: null-redirect
+:
+{
+  : in
+  :
+  $* <:"0<-" >>EOO
+  '0'
+  <-
+  EOO
+
+  : arg-in
+  :
+  $* <:"0 <-" >>EOO
+  '0 '
+  <-
+  EOO
+
+  : out
+  :
+  $* <:"1>-" >>EOO
+  '1'
+  >-
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >-" >>EOO
+  '1 '
+  >-
+  EOO
+}
+
+: trace-redirect
+:
+{
+  : out
+  :
+  $* <:"1>!" >>EOO
+  '1'
+  >!
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >!" >>EOO
+  '1 '
+  >!
+  EOO
+}
+
+: merge-redirect
+:
+{
+  : out
+  :
+  $* <:"1>&2" >>EOO
+  '1'
+  >&
+  '2'
+  EOO
+
+  : arg-out
+  :
+  $* <:"1 >&2" >>EOO
+  '1 '
+  >&
+  '2'
+  EOO
+}
+
+: str-redirect
+:
+{
+  : in
+  :
+  {
+    : newline
+    :
+    $* <:"0<a b" >>EOO
+    '0'
+    <
+    'a b'
+    EOO
+
+    : no-newline
+    :
+    $* <:"0<:a b" >>EOO
+    '0'
+    <:
+    'a b'
+    EOO
+  }
+
+  : out
+  :
+  {
+    : newline
+    :
+    $* <:"1>a b" >>EOO
+    '1'
+    >
+    'a b'
+    EOO
+
+    : no-newline
+    :
+    $* <:"1>:a b" >>EOO
+    '1'
+    >:
+    'a b'
+    EOO
+  }
+}
+
+: doc-redirect
+:
+{
+  : in
+  :
+  {
+    : newline
+    :
+    $* <:"0<<E O I" >>EOO
+    '0'
+    <<
+    'E O I'
+    EOO
+
+    : no-newline
+    :
+    $* <:"0<<:E O I" >>EOO
+    '0'
+    <<:
+    'E O I'
+    EOO
+  }
+
+  : out
+  :
+  {
+    : newline
+    :
+    $* <:"1>>E O O" >>EOO
+    '1'
+    >>
+    'E O O'
+    EOO
+
+    : no-newline
+    :
+    $* <:"1>>:E O O" >>EOO
+    '1'
+    >>:
+    'E O O'
+    EOO
+  }
+}
+
+: file-redirect
+:
+{
+  : in
+  :
+  $* <:"0<<<a b" >>EOO
+  '0'
+  <<<
+  'a b'
+  EOO
+
+  : out
+  :
+  $* <:"1>=a b" >>EOO
+  '1'
+  >=
+  'a b'
+  EOO
+
+  : out-app
+  :
+  $* <:"1>+a b" >>EOO
+  '1'
+  >+
+  'a b'
+  EOO
+}
+
+: cleanup
+:
+{
+  : always
+  :
+  $* <:"&file" >>EOO
+  &
+  'file'
+  EOO
+
+  : maybe
+  :
+  $* <:"&?file" >>EOO
+  &?
+  'file'
+  EOO
+
+  : never
+  :
+  $* <:"&!file" >>EOO
+  &!
+  'file'
+  EOO
+}
diff --git a/build2/test/script/lexer+command-line.test.testscript b/build2/test/script/lexer+command-line.test.testscript
new file mode 100644
index 0000000..65be837
--- /dev/null
+++ b/build2/test/script/lexer+command-line.test.testscript
@@ -0,0 +1,208 @@
+# file      : build2/test/script/lexer+command-line.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+test.arguments = command-line
+
+: semi
+{
+  : immediate
+  :
+  $* <"cmd;" >>EOO
+  'cmd'
+  ;
+  <newline>
+  EOO
+
+  : separated
+  :
+  $* <"cmd ;" >>EOO
+  'cmd'
+  ;
+  <newline>
+  EOO
+
+  : only
+  :
+  $* <";" >>EOO
+  ;
+  <newline>
+  EOO
+}
+
+: colon
+:
+{
+  : immediate
+  :
+  $* <"cmd: dsc" >>EOO
+  'cmd'
+  :
+  'dsc'
+  <newline>
+  EOO
+
+  : separated
+  :
+  $* <"cmd :dsc" >>EOO
+  'cmd'
+  :
+  'dsc'
+  <newline>
+  EOO
+
+  : only
+  :
+  $* <":" >>EOO
+  :
+  <newline>
+  EOO
+}
+
+: redirect
+:
+{
+  : pass
+  :
+  $* <"cmd <| 1>|" >>EOO
+  'cmd'
+  <|
+  '1'
+  >|
+  <newline>
+  EOO
+
+  : null
+  :
+  $* <"cmd <- 1>-" >>EOO
+  'cmd'
+  <-
+  '1'
+  >-
+  <newline>
+  EOO
+
+  : trace
+  :
+  $* <"cmd 1>!" >>EOO
+  'cmd'
+  '1'
+  >!
+  <newline>
+  EOO
+
+  : merge
+  :
+  $* <"cmd 1>&2" >>EOO
+  'cmd'
+  '1'
+  >&
+  '2'
+  <newline>
+  EOO
+
+  : str
+  :
+  $* <"cmd <a 1>b" >>EOO
+  'cmd'
+  <
+  'a'
+  '1'
+  >
+  'b'
+  <newline>
+  EOO
+
+  : str-nn
+  :
+  $* <"cmd <:a 1>:b" >>EOO
+  'cmd'
+  <:
+  'a'
+  '1'
+  >:
+  'b'
+  <newline>
+  EOO
+
+  : doc
+  :
+  $* <"cmd <<EOI 1>>EOO" >>EOO
+  'cmd'
+  <<
+  'EOI'
+  '1'
+  >>
+  'EOO'
+  <newline>
+  EOO
+
+  : doc-nn
+  :
+  $* <"cmd <<:EOI 1>>:EOO" >>EOO
+  'cmd'
+  <<:
+  'EOI'
+  '1'
+  >>:
+  'EOO'
+  <newline>
+  EOO
+
+  : file-cmp
+  :
+  $* <"cmd <<<in >>>out 2>>>err" >>EOO
+  'cmd'
+  <<<
+  'in'
+  >>>
+  'out'
+  '2'
+  >>>
+  'err'
+  <newline>
+  EOO
+
+  : file-write
+  :
+  $* <"cmd >=out 2>+err" >>EOO
+  'cmd'
+  >=
+  'out'
+  '2'
+  >+
+  'err'
+  <newline>
+  EOO
+}
+
+: cleanup
+:
+{
+  : always
+  :
+  $* <"cmd &file" >>EOO
+  'cmd'
+  &
+  'file'
+  <newline>
+  EOO
+
+  : maybe
+  :
+  $* <"cmd &?file" >>EOO
+  'cmd'
+  &?
+  'file'
+  <newline>
+  EOO
+
+  : never
+  :
+  $* <"cmd &!file" >>EOO
+  'cmd'
+  &!
+  'file'
+  <newline>
+  EOO
+}
diff --git a/build2/test/script/lexer+description-line.test.testscript b/build2/test/script/lexer+description-line.test.testscript
new file mode 100644
index 0000000..2d87d24
--- /dev/null
+++ b/build2/test/script/lexer+description-line.test.testscript
@@ -0,0 +1,33 @@
+# file      : build2/test/script/lexer+description-line.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+test.arguments = description-line
+
+: full
+:
+$* <" foo  bar " >>EOO
+' foo  bar '
+<newline>
+EOO
+
+: space
+:
+$* <"  " >>EOO
+'  '
+<newline>
+EOO
+
+: empty
+:
+$* <"" >>EOO
+<newline>
+EOO
+
+: eof
+:
+$* <:"foo" >>EOO 2>>EOE != 0
+'foo'
+EOO
+stdin:1:4: error: expected newline at the end of description line
+EOE
diff --git a/build2/test/script/lexer+first-token.test.testscript b/build2/test/script/lexer+first-token.test.testscript
new file mode 100644
index 0000000..f20f261
--- /dev/null
+++ b/build2/test/script/lexer+first-token.test.testscript
@@ -0,0 +1,97 @@
+# file      : build2/test/script/lexer+first-token.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+# Note: this mode auto-expires after each token.
+#
+test.arguments = first-token
+
+: dot
+:
+$* <"." >>EOO
+.
+<newline>
+EOO
+
+: semi
+:
+$* <";" >>EOO
+;
+<newline>
+EOO
+
+: colon
+:
+$* <":" >>EOO
+:
+<newline>
+EOO
+
+: lcbrace
+:
+$* <"{" >>EOO
+{
+<newline>
+EOO
+
+: rcbrace
+:
+$* <"}" >>EOO
+}
+<newline>
+EOO
+
+: setup
+:
+$* <"+foo" >>EOO
++
+'foo'
+<newline>
+EOO
+
+: tdown
+:
+$* <"- foo" >>EOO
+-
+'foo'
+<newline>
+EOO
+
+: plus-leading
+:
+$* <"foo+bar" >>EOO
+'foo+bar'
+<newline>
+EOO
+
+: minus-leading
+:
+$* <"foo- x" >>EOO
+'foo-'
+'x'
+<newline>
+EOO
+
+: assign
+:
+$* <"foo=" >>EOO
+'foo'
+'='
+<newline>
+EOO
+
+: append
+:
+$* <"foo+=" >>EOO
+'foo'
+'+='
+<newline>
+EOO
+
+: prepend
+:
+$* <"foo=+" >>EOO
+'foo'
+'=+'
+<newline>
+EOO
diff --git a/build2/test/script/lexer+second-token.test.testscript b/build2/test/script/lexer+second-token.test.testscript
new file mode 100644
index 0000000..8fdee23
--- /dev/null
+++ b/build2/test/script/lexer+second-token.test.testscript
@@ -0,0 +1,68 @@
+# file      : build2/test/script/lexer+second-token.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+# Note: this mode auto-expires after each token.
+#
+test.arguments = second-token
+
+: semi
+:
+$* <";" >>EOO
+;
+<newline>
+EOO
+
+: colon
+:
+$* <":" >>EOO
+:
+<newline>
+EOO
+
+: assign
+:
+$* <"=foo" >>EOO
+=
+'foo'
+<newline>
+EOO
+
+: append
+:
+$* <"+= foo" >>EOO
++=
+'foo'
+<newline>
+EOO
+
+: prepend
+:
+$* <" =+ foo" >>EOO
+=+
+'foo'
+<newline>
+EOO
+
+: assign-leading
+:
+$* <"foo=bar" >>EOO
+'foo=bar'
+<newline>
+EOO
+
+: append-leading
+:
+$* <"foo+= bar" >>EOO
+'foo+='
+'bar'
+<newline>
+EOO
+
+: prepend-leading
+:
+$* <"foo =+bar" >>EOO
+'foo'
+'=+bar'
+<newline>
+EOO
diff --git a/build2/test/script/lexer+variable-line.test.testscript b/build2/test/script/lexer+variable-line.test.testscript
new file mode 100644
index 0000000..b9c558d
--- /dev/null
+++ b/build2/test/script/lexer+variable-line.test.testscript
@@ -0,0 +1,28 @@
+# file      : build2/test/script/lexer+variable-line.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+test.arguments = variable-line
+
+: semi
+:
+$* <"cmd;" >>EOO
+'cmd'
+;
+<newline>
+EOO
+
+: semi-separated
+:
+$* <"cmd ;" >>EOO
+'cmd'
+;
+<newline>
+EOO
+
+: semi-only
+:
+$* <";" >>EOO
+;
+<newline>
+EOO
diff --git a/build2/test/script/lexer+variable.test.testscript b/build2/test/script/lexer+variable.test.testscript
new file mode 100644
index 0000000..0ec323b
--- /dev/null
+++ b/build2/test/script/lexer+variable.test.testscript
@@ -0,0 +1,70 @@
+# file      : build2/test/script/lexer+variable.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+# Test handling custom variable names ($*, $~, $NN).
+#
+test.arguments = variable
+
+: command
+:
+{
+  : only
+  :
+  $* <"*" >>EOO
+  '*'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"*abc" >>EOO
+  '*'
+  'abc'
+  <newline>
+  EOO
+}
+
+: working-dir
+:
+{
+  : only
+  :
+  $* <"~" >>EOO
+  '~'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"~123" >>EOO
+  '~'
+  '123'
+  <newline>
+  EOO
+}
+
+: arg
+:
+{
+  : only
+  :
+  $* <"0" >>EOO
+  '0'
+  <newline>
+  EOO
+
+  : followed
+  :
+  $* <"1abc" >>EOO
+  '1'
+  'abc'
+  <newline>
+  EOO
+
+  : multi-digit
+  :
+  $* <"10" 2>>EOE != 0
+  stdin:1:1: error: multi-digit special variable name
+  EOE
+}
diff --git a/build2/test/script/lexer.test.cxx b/build2/test/script/lexer.test.cxx
new file mode 100644
index 0000000..56418b7
--- /dev/null
+++ b/build2/test/script/lexer.test.cxx
@@ -0,0 +1,85 @@
+// file      : build2/test/script/lexer.test.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <cassert>
+#include <iostream>
+
+#include <build2/types.hxx>
+#include <build2/utility.hxx>
+
+#include <build2/test/script/token.hxx>
+#include <build2/test/script/lexer.hxx>
+
+using namespace std;
+
+namespace build2
+{
+  namespace test
+  {
+    namespace script
+    {
+      // Usage: argv[0] <lexer-mode>
+      //
+      int
+      main (int argc, char* argv[])
+      {
+        lexer_mode m;
+        {
+          assert (argc == 2);
+          string s (argv[1]);
+
+          if      (s == "command-line")      m = lexer_mode::command_line;
+          else if (s == "first-token")       m = lexer_mode::first_token;
+          else if (s == "second-token")      m = lexer_mode::second_token;
+          else if (s == "variable-line")     m = lexer_mode::variable_line;
+          else if (s == "command-expansion") m = lexer_mode::command_expansion;
+          else if (s == "here-line-single")  m = lexer_mode::here_line_single;
+          else if (s == "here-line-double")  m = lexer_mode::here_line_double;
+          else if (s == "description-line")  m = lexer_mode::description_line;
+          else if (s == "variable")          m = lexer_mode::variable;
+          else                               assert (false);
+        }
+
+        try
+        {
+          cin.exceptions (istream::failbit | istream::badbit);
+
+          // Some modes auto-expire so we need something underneath.
+          //
+          bool u (m == lexer_mode::first_token      ||
+                  m == lexer_mode::second_token     ||
+                  m == lexer_mode::variable_line    ||
+                  m == lexer_mode::description_line ||
+                  m == lexer_mode::variable);
+
+          lexer l (cin, path ("stdin"), u ? lexer_mode::command_line : m);
+          if (u)
+            l.mode (m);
+
+          // No use printing eos since we will either get it or loop forever.
+          //
+          for (token t (l.next ()); t.type != token_type::eos; t = l.next ())
+          {
+            // Print each token on a separate line without quoting operators.
+            //
+            t.printer (cout, t, false);
+            cout << endl;
+          }
+        }
+        catch (const failed&)
+        {
+          return 1;
+        }
+
+        return 0;
+      }
+    }
+  }
+}
+
+int
+main (int argc, char* argv[])
+{
+  return build2::test::script::main (argc, argv);
+}
diff --git a/build2/test/script/parser+cleanup.test.testscript b/build2/test/script/parser+cleanup.test.testscript
new file mode 100644
index 0000000..2c94afc
--- /dev/null
+++ b/build2/test/script/parser+cleanup.test.testscript
@@ -0,0 +1,58 @@
+# file      : build2/test/script/parser+cleanup.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: always
+:
+$* <<EOI >>EOO
+cmd &file
+EOI
+cmd &file
+EOO
+
+: maybe
+:
+$* <<EOI >>EOO
+cmd &?file
+EOI
+cmd &?file
+EOO
+
+: never
+:
+$* <<EOI >>EOO
+cmd &!file
+EOI
+cmd &!file
+EOO
+
+: empty
+:
+$* <<EOI 2>>EOE != 0
+cmd &""
+EOI
+testscript:1:6: error: empty cleanup path
+EOE
+
+: missed-before
+:
+{
+  : token
+  :
+  : Path missed before command next token
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd & >file
+  EOI
+  testscript:1:7: error: missing cleanup path
+  EOE
+
+  : end
+  : Test path missed before end of command
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd &
+  EOI
+  testscript:1:6: error: missing cleanup path
+  EOE
+}
diff --git a/build2/test/script/parser+command-if.test.testscript b/build2/test/script/parser+command-if.test.testscript
new file mode 100644
index 0000000..ab6e6d5
--- /dev/null
+++ b/build2/test/script/parser+command-if.test.testscript
@@ -0,0 +1,548 @@
+# file      : build2/test/script/parser+command-if.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: if
+:
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if true foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? true foo
+  cmd1
+  cmd2
+  EOO
+
+  : false
+  :
+  $* <<EOI >>EOO
+  if false foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? false foo
+  EOO
+
+  : not-true
+  :
+  $* <<EOI >>EOO
+  if! true foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? true foo
+  EOO
+
+  : not-false
+  :
+  $* <<EOI >>EOO
+  if! false foo
+    cmd1
+    cmd2
+  end
+  EOI
+  ? false foo
+  cmd1
+  cmd2
+  EOO
+
+  : without-command
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd
+  end
+  EOI
+  testscript:1:3: error: missing program
+  EOE
+
+  : after-semi
+  :
+  $* -s <<EOI >>EOO
+  cmd1;
+  if true
+    cmd2
+  end
+  EOI
+  {
+    {
+      cmd1
+      ? true
+      cmd2
+    }
+  }
+  EOO
+
+  : setup
+  :
+  $* -s <<EOI >>EOO
+  +if true
+    cmd
+  end
+  EOI
+  {
+    ? true
+    +cmd
+  }
+  EOO
+
+  : tdown
+  :
+  $* -s <<EOI >>EOO
+  -if true
+    cmd
+  end
+  EOI
+  {
+    ? true
+    -cmd
+  }
+  EOO
+}
+
+: elif
+:
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif true
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? true
+  cmd3
+  cmd4
+  EOO
+
+  : false
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif false
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? false
+  EOO
+
+  : not-true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif! true
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? true
+  EOO
+
+  : not-false
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  elif! false
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  ? false
+  cmd3
+  cmd4
+  EOO
+
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  elif true
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'elif' without preceding 'if'
+  EOE
+
+  : not-without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  elif! true
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'elif!' without preceding 'if'
+  EOE
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
+    cmd
+  else
+    cmd
+  elif true
+    cmd
+  end
+  EOI
+  testscript:5:1: error: 'elif' after 'else'
+  EOE
+}
+
+: else
+:
+{
+  : true
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    cmd2
+  else
+    cmd3
+    cmd4
+  end
+  EOI
+  ? false
+  cmd3
+  cmd4
+  EOO
+
+  : false
+  :
+  $* <<EOI >>EOO
+  if true
+    cmd1
+    cmd2
+  else
+    cmd3
+    cmd4
+  end
+  EOI
+  ? true
+  cmd1
+  cmd2
+  EOO
+
+  : chain
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd
+    cmd
+  elif false
+    cmd
+    cmd
+  elif false
+    cmd
+    cmd
+  elif true
+    cmd1
+    cmd2
+  elif false
+    cmd
+    cmd
+  else
+    cmd
+    cmd
+  end
+  EOI
+  ? false
+  ? false
+  ? false
+  ? true
+  cmd1
+  cmd2
+  EOO
+
+  : command-after
+  :
+  $* <<EOI 2>>EOE != 0
+  if true
+    cmd
+  else cmd
+    cmd
+  end
+  EOI
+  testscript:3:6: error: expected newline instead of 'cmd'
+  EOE
+
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  else
+    cmd
+  end
+  EOI
+  testscript:2:1: error: 'else' without preceding 'if'
+  EOE
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
+    cmd
+  else
+    cmd
+  else
+    cmd
+  end
+  EOI
+  testscript:5:1: error: 'else' after 'else'
+  EOE
+}
+
+: end
+{
+  : without-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  end
+  EOI
+  testscript:2:1: error: 'end' without preceding 'if'
+  EOE
+
+  : before
+  {
+    : semi
+    :
+    $* -s <<EOI >>EOO
+    if true
+      cmd1
+    end;
+    cmd2
+    EOI
+    {
+      {
+        ? true
+        cmd1
+        cmd2
+      }
+    }
+    EOO
+
+    : command
+    :
+    $* <<EOI 2>>EOE != 0
+    if true
+      cmd
+    end cmd
+    EOI
+    testscript:3:5: error: expected newline instead of 'cmd'
+    EOE
+
+    : colon
+    :
+    $* -s <<EOI >>EOO
+    if true
+      cmd1
+      cmd2
+    end : test
+    EOI
+    {
+      : id:test
+      {
+        ? true
+        cmd1
+        cmd2
+      }
+    }
+    EOO
+  }
+}
+
+: nested
+:
+{
+  : take
+  :
+  $* <<EOI >>EOO
+  if true
+    cmd1
+    if false
+      cmd
+    elif false
+      if true
+        cmd
+      end
+    else
+      cmd2
+    end
+    cmd3
+  end
+  EOI
+  ? true
+  cmd1
+  ? false
+  ? false
+  cmd2
+  cmd3
+  EOO
+
+  : skip
+  :
+  $* <<EOI >>EOO
+  if false
+    cmd1
+    if false
+      cmd
+    elif false
+      if true
+        cmd
+      end
+    else
+      cmd2
+    end
+    cmd3
+  else
+    cmd
+  end
+  EOI
+  ? false
+  cmd
+  EOO
+}
+
+: contained
+{
+  : semi
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd;
+    cmd
+  end
+  EOI
+  testscript:2:3: error: ';' inside 'if'
+  EOE
+
+  : colon-leading
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    : foo
+    cmd
+  end
+  EOI
+  testscript:2:3: error: description inside 'if'
+  EOE
+
+  : colon-trailing
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd : foo
+  end
+  EOI
+  testscript:2:3: error: description inside 'if'
+  EOE
+
+  : eos
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  EOI
+  testscript:2:1: error: expected closing 'end'
+  EOE
+
+  : scope
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    cmd
+    {
+    }
+  end
+  EOI
+  testscript:3:3: error: expected closing 'end'
+  EOE
+
+  : setup
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    +cmd
+  end
+  EOI
+  testscript:2:3: error: setup command inside 'if'
+  EOE
+
+  : tdown
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+    -cmd
+  end
+  EOI
+  testscript:2:3: error: teardown command inside 'if'
+  EOE
+}
+
+: line-index
+:
+$* -l <<EOI >>EOO
+if false
+  cmd
+  if true
+    cmd
+  end
+  cmd
+elif false
+  cmd
+else
+  cmd
+end
+EOI
+? false # 1
+? false # 6
+cmd # 8
+EOO
+
+: var
+:
+$* <<EOI >>EOO
+if true
+  x = foo
+else
+  x = bar
+end;
+cmd $x
+EOI
+? true
+cmd foo
+EOO
+
+: leading-and-trailing-description
+:
+$* <<EOI 2>>EOE != 0
+: foo
+if true
+  cmd
+end : bar
+EOI
+testscript:4:1: error: both leading and trailing descriptions
+EOE
diff --git a/build2/test/script/parser+command-re-parse.test.testscript b/build2/test/script/parser+command-re-parse.test.testscript
new file mode 100644
index 0000000..ef030de
--- /dev/null
+++ b/build2/test/script/parser+command-re-parse.test.testscript
@@ -0,0 +1,12 @@
+# file      : build2/test/script/parser+command-re-parse.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: double-quote
+:
+$* <<EOI >>EOO
+x = cmd \">-\" "'<-'"
+$x
+EOI
+cmd '>-' '<-'
+EOO
diff --git a/build2/test/script/parser+description.test.testscript b/build2/test/script/parser+description.test.testscript
new file mode 100644
index 0000000..7d840c3
--- /dev/null
+++ b/build2/test/script/parser+description.test.testscript
@@ -0,0 +1,486 @@
+# file      : build2/test/script/parser+description.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: id
+:
+{
+  : lead
+  :
+  $* <<EOI >>EOO
+  : foo
+  cmd
+  EOI
+  : id:foo
+  cmd
+  EOO
+
+  : trail
+  :
+  $* <<EOI >>EOO
+  cmd : foo
+  EOI
+  : id:foo
+  cmd
+  EOO
+
+  : dup
+  : Id uniqueness
+  :
+  {
+    : test
+    :
+    {
+      : test
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      cmd
+      : foo
+      cmd
+      EOI
+      testscript:3:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : group
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      cmd
+      : foo
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:3:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : derived
+      :
+      $* <<EOI 2>>EOE != 0
+      : 3
+      cmd
+      cmd
+      EOI
+      testscript:3:1: error: duplicate id 3
+        testscript:1:1: info: previously used here
+      EOE
+    }
+
+    : group
+    :
+    {
+      : test
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      {
+        cmd
+        cmd
+      }
+      : foo
+      cmd
+      EOI
+      testscript:6:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : group
+      :
+      $* <<EOI 2>>EOE != 0
+      : foo
+      {
+        cmd
+        cmd
+      }
+      : foo
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:6:1: error: duplicate id foo
+        testscript:1:1: info: previously used here
+      EOE
+
+      : derived
+      :
+      $* <<EOI 2>>EOE != 0
+      : 3
+      cmd
+      {
+        cmd
+        cmd
+      }
+      EOI
+      testscript:3:1: error: duplicate id 3
+        testscript:1:1: info: previously used here
+      EOE
+    }
+  }
+}
+
+: summary
+{
+  : lead
+  :
+  $* <<EOI >>EOO
+  : foo bar
+  cmd
+  EOI
+  : sm:foo bar
+  cmd
+  EOO
+
+  : trail
+  :
+  $* <<EOI >>EOO
+  cmd: foo bar
+  EOI
+  : sm:foo bar
+  cmd
+  EOO
+
+  : id
+  :
+  $* <<EOI >>EOO
+  : foo-bar
+  : foo bar
+  cmd
+  EOI
+  : id:foo-bar
+  : sm:foo bar
+  cmd
+  EOO
+}
+
+: details
+{
+  : id
+  :
+  $* <<EOI >>EOO
+  : foo-bar
+  :
+  : foo bar
+  : bar baz
+  cmd
+  EOI
+  : id:foo-bar
+  :
+  : foo bar
+  : bar baz
+  cmd
+  EOO
+
+  : summary
+  :
+  {
+    : only
+    :
+    $* <<EOI >>EOO
+    : foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : sm:foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : assumed
+    :
+    $* <<EOI >>EOO
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : id
+    :
+    $* <<EOI >>EOO
+    : foo-bar
+    : foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOI
+    : id:foo-bar
+    : sm:foo bar
+    :
+    : foo bar
+    : bar baz
+    cmd
+    EOO
+
+    : id-assumed
+    :
+    $* <<EOI >>EOO
+    : foo-bar
+    : bar baz
+    : baz fox
+    cmd
+    EOI
+    : foo-bar
+    : bar baz
+    : baz fox
+    cmd
+    EOO
+  }
+}
+
+: legal
+:
+: Legal places for description.
+:
+{
+  : var
+  :
+  $* <<EOI >>EOO
+  : foo bar
+  x = y;
+  cmd $x
+  EOI
+  : sm:foo bar
+  cmd y
+  EOO
+}
+
+: illegal
+:
+: Illegal places for description.
+:
+{
+  : eof
+  :
+  $* <": foo" 2>>EOE != 0
+  testscript:2:1: error: description before <end of file>
+  EOE
+
+  : rcbrace
+  :
+  $* <<EOI 2>>EOE != 0
+  {
+    cmd
+    : foo
+  }
+  EOI
+  testscript:4:1: error: description before '}'
+  EOE
+
+  : setup
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  +cmd
+  EOI
+  testscript:2:1: error: description before setup command
+  EOE
+
+  : tdown
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  -cmd
+  EOI
+  testscript:2:1: error: description before teardown command
+  EOE
+
+  : var
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  x = y
+  EOI
+  testscript:2:1: error: description before setup/teardown variable
+  EOE
+
+  : var-if
+  :
+  $* <<EOI 2>>EOE != 0
+  : foo
+  if true
+    x = y
+  end
+  EOI
+  testscript:2:1: error: description before/after setup/teardown variable-if
+  EOE
+
+  : var-if-after
+  :
+  $* <<EOI 2>>EOE != 0
+  if true
+    x = y
+  end : foo
+  EOI
+  testscript:1:1: error: description before/after setup/teardown variable-if
+  EOE
+
+  : test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd1;
+  : foo
+  cmd2
+  EOI
+  testscript:2:1: error: description inside test
+  EOE
+}
+
+: test-scope
+:
+: Interaction with test scope merging.
+:
+{
+  : both
+  :
+  : No merge since both have description.
+  :
+  $* -s -i <<EOI >>EOO
+  : foo
+  {
+    : bar
+    cmd
+  }
+  EOI
+  {
+    : id:foo
+    { # foo
+      : id:bar
+      { # foo/bar
+        cmd
+      }
+    }
+  }
+  EOO
+
+  : test
+  :
+  : No merge since test has description.
+  :
+  $* -s -i <<EOI >>EOO
+  {
+    : foo-bar
+    : foo bar
+    cmd
+  }
+  EOI
+  {
+    { # 1
+      : id:foo-bar
+      : sm:foo bar
+      { # 1/foo-bar
+        cmd
+      }
+    }
+  }
+  EOO
+
+  : group
+  :
+  $* -s -i <<EOI >>EOO
+  : foo-bar
+  : foo bar
+  {
+    cmd
+  }
+  EOI
+  {
+    : id:foo-bar
+    : sm:foo bar
+    { # foo-bar
+      cmd
+    }
+  }
+  EOO
+}
+
+: blanks
+:
+$* <<EOI >>EOO
+:
+:
+: foo bar
+: bar baz
+:
+: baz fox
+:
+:
+cmd
+EOI
+: foo bar
+: bar baz
+:
+: baz fox
+cmd
+EOO
+
+: strip
+:
+$* <<EOI >>EOO
+:  	  foo-bar
+:  	  bar baz
+:
+:  	    baz fox
+: fox biz
+:biz buz
+:
+cmd
+EOI
+: id:foo-bar
+: sm:bar baz
+:
+:   baz fox
+:  fox biz
+: biz buz
+cmd
+EOO
+
+: trail-compound
+:
+$* <<EOI >>EOO
+cmd1;
+cmd2: foo
+EOI
+: id:foo
+cmd1
+cmd2
+EOO
+
+: empty
+:
+$* <<EOI 2>>EOE != 0
+:
+:
+cmd
+EOI
+testscript:1:1: error: empty description
+EOE
+
+: trail-empty
+:
+$* <<EOI 2>>EOE != 0
+cmd:
+EOI
+testscript:1:4: error: empty description
+EOE
+
+: both
+:
+$* <<EOI 2>>EOE != 0
+: foo
+cmd : bar
+EOI
+testscript:2:1: error: both leading and trailing descriptions
+EOE
diff --git a/build2/test/script/parser+directive.test.testscript b/build2/test/script/parser+directive.test.testscript
new file mode 100644
index 0000000..addd874
--- /dev/null
+++ b/build2/test/script/parser+directive.test.testscript
@@ -0,0 +1,74 @@
+# file      : build2/test/script/parser+directive.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: not-directive
+:
+$* <<EOI >>EOO
+x = x
+".include" foo.testscript
+\.include foo.testscript
+EOI
+.include foo.testscript
+.include foo.testscript
+EOO
+
+: expected-name
+:
+$* <<EOI 2>>EOE != 0
+.$
+EOI
+testscript:1:2: error: expected directive name instead of '$'
+EOE
+
+: unknown-name
+:
+$* <<EOI 2>>EOE != 0
+.bogus
+EOI
+testscript:1:2: error: unknown directive 'bogus'
+EOE
+
+: separated
+:
+touch foo.testscript;
+$* <<EOI
+.  include foo.testscript
+EOI
+
+: not-separated
+:
+touch foo.testscript;
+$* <<EOI
+x = foo.testscript
+.include$x
+EOI
+
+: var-expansion
+:
+cat <<EOI >="foo-$(build.verson.project).testscript";
+cmd
+EOI
+$* <<EOI >>EOO
+.include "foo-$(build.verson.project).testscript"
+EOI
+cmd
+EOO
+
+: after-semi
+:
+$* <<EOI 2>>EOE != 0
+cmd;
+.include foo.testscript
+EOI
+testscript:2:1: error: directive after ';'
+EOE
+
+: semi-after
+:
+$* <<EOI 2>>EOE != 0
+.include foo.testscript;
+cmd
+EOI
+testscript:1:24: error: ';' after directive
+EOE
diff --git a/build2/test/script/parser+exit.test.testscript b/build2/test/script/parser+exit.test.testscript
new file mode 100644
index 0000000..014afa4
--- /dev/null
+++ b/build2/test/script/parser+exit.test.testscript
@@ -0,0 +1,27 @@
+# file      : build2/test/script/parser+exit.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: eq
+:
+$* <<EOI >>EOO
+cmd == 1
+EOI
+cmd == 1
+EOO
+
+: ne
+:
+$* <<EOI >>EOO
+cmd!=1
+EOI
+cmd != 1
+EOO
+
+: end
+:
+$* <<EOI 2>>EOE != 0
+cmd != 1 <"foo"
+EOI
+testscript:1:10: error: unexpected '<' after command exit status
+EOE
diff --git a/build2/test/script/parser+expansion.test.testscript b/build2/test/script/parser+expansion.test.testscript
new file mode 100644
index 0000000..71a21b3
--- /dev/null
+++ b/build2/test/script/parser+expansion.test.testscript
@@ -0,0 +1,36 @@
+# file      : build2/test/script/parser+expansion.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: quote
+:
+: Make sure everything expanded as strings.
+:
+$* <<EOI >>EOO
+x = dir/ proj% proj%name proj%proj%dir/type{name   name   {name}}
+cmd dir/ proj% proj%name proj%proj%dir/type{name   name   {name}}
+cmd $x
+EOI
+cmd dir/ proj% proj%name proj%proj%dir/type{name name {name}}
+cmd dir/ proj% proj%name proj%proj%dir/type{name name {name}}
+EOO
+
+: unterm-quoted-seq
+:
+$* <<EOI 2>>EOE != 0
+x = "'a bc"
+cmd xy$x
+EOI
+<string>:1:8: error: unterminated single-quoted sequence
+  testscript:2:5: info: while parsing string 'xy'a bc'
+EOE
+
+: invalid-redirect
+:
+$* <<EOI 2>>EOE != 0
+x = "1>&a"
+cmd $x
+EOI
+<string>:1:4: error: stdout merge redirect file descriptor must be 2
+  testscript:2:5: info: while parsing string '1>&a'
+EOE
diff --git a/build2/test/script/parser+here-document.test.testscript b/build2/test/script/parser+here-document.test.testscript
new file mode 100644
index 0000000..5e99a26
--- /dev/null
+++ b/build2/test/script/parser+here-document.test.testscript
@@ -0,0 +1,213 @@
+# file      : build2/test/script/parser+here-document.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: end-marker
+:
+{
+  : missing-newline
+  :
+  $* <'cmd <<' 2>>EOE != 0
+  testscript:1:7: error: expected here-document end marker
+  EOE
+
+  : missing-exit
+  :
+  $* <'cmd << != 0' 2>>EOE != 0
+  testscript:1:8: error: expected here-document end marker
+  EOE
+
+  : missing-empty
+  :
+  $* <'cmd <<""' 2>>EOE != 0
+  testscript:1:7: error: expected here-document end marker
+  EOE
+
+  : unseparated-expansion
+  :
+  $* <'cmd <<FOO$foo' 2>>EOE != 0
+  testscript:1:10: error: here-document end marker must be literal
+  EOE
+
+  : quoted-single-partial
+  :
+  $* <"cmd <<F'O'O" 2>>EOE != 0
+  testscript:1:7: error: partially-quoted here-document end marker
+  EOE
+
+  : quoted-double-partial
+  :
+  $* <'cmd <<"FO"O' 2>>EOE != 0
+  testscript:1:7: error: partially-quoted here-document end marker
+  EOE
+
+  : quoted-mixed
+  :
+  $* <"cmd <<\"FO\"'O'" 2>>EOE != 0
+  testscript:1:7: error: partially-quoted here-document end marker
+  EOE
+
+  : unseparated
+  :
+  $* <<EOI >>EOO
+  cmd <<EOF!=0
+  foo
+  EOF
+  EOI
+  cmd <<EOF != 0
+  foo
+  EOF
+  EOO
+
+  : quoted-single
+  :
+  $* <<EOI >>EOO
+  cmd <<'EOF'
+  foo
+  EOF
+  EOI
+  cmd <<EOF
+  foo
+  EOF
+  EOO
+
+  : quoted-double
+  :
+  $* <<EOI >>EOO
+  cmd <<"EOF"
+  foo
+  EOF
+  EOI
+  cmd <<EOF
+  foo
+  EOF
+  EOO
+}
+
+: indent
+:
+{
+  : basic
+  :
+  $* <<EOI >>EOO
+  cmd <<EOF
+    foo
+     bar
+     	 baz
+    EOF
+  EOI
+  cmd <<EOF
+  foo
+   bar
+   	 baz
+  EOF
+  EOO
+
+  : blank
+  :
+  $* <<EOI >>EOO
+  cmd <<EOF
+    foo
+
+
+    bar
+    EOF
+  EOI
+  cmd <<EOF
+  foo
+
+
+  bar
+  EOF
+  EOO
+
+  : non-ws-prefix
+  :
+  $* <<EOI >>EOO
+  cmd <<EOF
+   x EOF
+  EOF
+  EOI
+  cmd <<EOF
+   x EOF
+  EOF
+  EOO
+
+  : whole-token
+  : Test the case where the indentation is a whole token
+  :
+  $* <<EOI >>EOO
+  x = foo bar
+  cmd <<"EOF"
+    $x
+    EOF
+  EOI
+  cmd <<EOF
+  foo bar
+  EOF
+  EOO
+
+  : long-line
+  : Test the case where the line contains multiple tokens
+  :
+  $* <<EOI >>EOO
+  x = foo
+  cmd <<"EOF"
+     $x bar $x
+    EOF
+  EOI
+  cmd <<EOF
+   foo bar foo
+  EOF
+  EOO
+
+  : unindented
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd <<EOF
+   bar
+    EOF
+  EOI
+  testscript:2:1: error: unindented here-document line
+  EOE
+}
+
+: blank
+:
+$* <<EOI >>EOO
+cmd <<EOF
+
+foo
+
+bar
+
+EOF
+EOI
+cmd <<EOF
+
+foo
+
+bar
+
+EOF
+EOO
+
+: quote
+:
+: Note: they are still recognized in eval contexts.
+:
+$* <<EOI >>EOO
+cmd <<"EOF"
+'single'
+"double"
+b'o't"h"
+('single' "double")
+EOF
+EOI
+cmd <<EOF
+'single'
+"double"
+b'o't"h"
+single double
+EOF
+EOO
diff --git a/build2/test/script/parser+here-string.test.testscript b/build2/test/script/parser+here-string.test.testscript
new file mode 100644
index 0000000..16544df
--- /dev/null
+++ b/build2/test/script/parser+here-string.test.testscript
@@ -0,0 +1,19 @@
+# file      : build2/test/script/parser+here-string.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: empty
+:
+$* <<EOI >>EOO
+cmd <""
+EOI
+cmd <''
+EOO
+
+: empty-nn
+:
+$* <<EOI >>EOO
+cmd <:""
+EOI
+cmd <:''
+EOO
diff --git a/build2/test/script/parser+include.test.testscript b/build2/test/script/parser+include.test.testscript
new file mode 100644
index 0000000..65be149
--- /dev/null
+++ b/build2/test/script/parser+include.test.testscript
@@ -0,0 +1,104 @@
+# file      : build2/test/script/parser+include.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: none
+:
+$* <<EOI
+.include
+.include --once
+EOI
+
+: empty
+:
+touch foo.testscript;
+$* <<EOI
+.include foo.testscript
+.include --once foo.testscript
+EOI
+
+: one
+:
+cat <"cmd" >=foo.testscript;
+$* <<EOI >>EOO
+.include foo.testscript
+EOI
+cmd
+EOO
+
+: multiple
+:
+cat <"cmd foo" >=foo.testscript;
+cat <"cmd bar" >=bar.testscript;
+$* <<EOI >>EOO
+.include foo.testscript bar.testscript
+EOI
+cmd foo
+cmd bar
+EOO
+
+: once
+:
+cat <"cmd" >=foo.testscript;
+$* <<EOI >>EOO
+.include foo.testscript
+x
+.include --once foo.testscript
+.include --once bar/../foo.testscript
+y
+.include ../once/foo.testscript
+EOI
+cmd
+x
+y
+cmd
+EOO
+
+: group-id
+:
+cat <<EOI >=foo.testscript;
+{
+  x = b
+}
+EOI
+$* -s -i <<EOI >>EOO
+x = a
+.include foo.testscript
+EOI
+{
+  { # 2-foo-1
+  }
+}
+EOO
+
+: test-id
+:
+cat <<EOI >=foo.testscript;
+cmd
+EOI
+$* -s -i <<EOI >>EOO
+x = a
+.include foo.testscript
+EOI
+{
+  { # 2-foo-1
+    cmd
+  }
+}
+EOO
+
+: invalid-path
+:
+$* <<EOI 2>>EOE != 0
+.include ""
+EOI
+testscript:1:2: error: invalid testscript include path ''
+EOE
+
+: unable-open
+:
+$* <<EOI 2>>~/EOE/ != 0
+.include foo.testscript
+EOI
+/testscript:1:2: error: unable to read testscript foo.testscript: .+/
+EOE
diff --git a/build2/test/script/parser+pipe-expr.test.testscript b/build2/test/script/parser+pipe-expr.test.testscript
new file mode 100644
index 0000000..18eb660
--- /dev/null
+++ b/build2/test/script/parser+pipe-expr.test.testscript
@@ -0,0 +1,133 @@
+# file      : build2/test/script/parser+pipe-expr.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: pipe
+:
+$* <<EOI >>EOO
+cmd1 | cmd2|cmd3
+EOI
+cmd1 | cmd2 | cmd3
+EOO
+
+: log
+:
+$* <<EOI >>EOO
+cmd1 || cmd2&&cmd3
+EOI
+cmd1 || cmd2 && cmd3
+EOO
+
+: pipe-log
+:
+$* <<EOI >>EOO
+cmd1 | cmd2 && cmd3 | cmd4
+EOI
+cmd1 | cmd2 && cmd3 | cmd4
+EOO
+
+: exit
+:
+$* <<EOI >>EOO
+cmd1|cmd2==1&&cmd3!=0|cmd4
+EOI
+cmd1 | cmd2 == 1 && cmd3 != 0 | cmd4
+EOO
+
+: here-doc
+:
+$* <<EOI >>EOO
+cmd1 <<EOI1 | cmd2 >>EOO2 && cmd3 <<EOI3 2>&1 | cmd4 2>>EOE4 >>EOO4
+input
+one
+EOI1
+ouput
+two
+EOO2
+input
+three
+EOI3
+error
+four
+EOE4
+output
+four
+EOO4
+EOI
+cmd1 <<EOI1 | cmd2 >>EOO2 && cmd3 <<EOI3 2>&1 | cmd4 >>EOO4 2>>EOE4
+input
+one
+EOI1
+ouput
+two
+EOO2
+input
+three
+EOI3
+output
+four
+EOO4
+error
+four
+EOE4
+EOO
+
+: leading
+:
+$* <<EOI 2>>EOE != 0
+| cmd
+EOI
+testscript:1:1: error: missing program
+EOE
+
+: trailing
+:
+$* <<EOI 2>>EOE != 0
+cmd &&
+EOI
+testscript:1:7: error: missing program
+EOE
+
+: redirected
+:
+{
+  : input
+  :
+  {
+    : first
+    :
+    $* <<EOI >>EOO
+    cmd1 <foo | cmd2
+    EOI
+    cmd1 <foo | cmd2
+    EOO
+
+    : non-first
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd1 | cmd2 <foo
+    EOI
+    testscript:1:13: error: stdin is both piped and redirected
+    EOE
+  }
+
+  : output
+  :
+  {
+    : last
+    :
+    $* <<EOI >>EOO
+    cmd1 | cmd2 >foo
+    EOI
+    cmd1 | cmd2 >foo
+    EOO
+
+    : non-last
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd1 >foo | cmd2
+    EOI
+    testscript:1:11: error: stdout is both redirected and piped
+    EOE
+  }
+}
diff --git a/build2/test/script/parser+pre-parse.test.testscript b/build2/test/script/parser+pre-parse.test.testscript
new file mode 100644
index 0000000..7d9eb6c
--- /dev/null
+++ b/build2/test/script/parser+pre-parse.test.testscript
@@ -0,0 +1,23 @@
+# file      : build2/test/script/parser+pre-parse.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: attribute
+:
+{
+  : pair
+  :
+  $* <<EOI 2>>EOE != 0
+  x = [foo=bar]
+  EOI
+  testscript:1:5: error: unknown value attribute foo=bar
+  EOE
+
+  : pair-empty
+  :
+  $* <<EOI 2>>EOE != 0
+  x = [foo=]
+  EOI
+  testscript:1:5: error: unknown value attribute foo
+  EOE
+}
diff --git a/build2/test/script/parser+redirect.test.testscript b/build2/test/script/parser+redirect.test.testscript
new file mode 100644
index 0000000..b0b967a
--- /dev/null
+++ b/build2/test/script/parser+redirect.test.testscript
@@ -0,0 +1,356 @@
+# file      : build2/test/script/parser+redirect.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+# @@ Add tests for redirects other than trace, here-*, file and merge.
+# @@ Does it make sense to split into separate files - one per redirect type?
+#
+
+: trace
+:
+{
+  $* <'cmd >!'  >'cmd >!'  : out
+  $* <'cmd 2>!' >'cmd 2>!' : err
+}
+
+: str
+:
+{
+  : literal
+  :
+  {
+    : portable-path
+    :
+    $* <<EOI >>EOO
+    cmd </foo >/bar 2>/baz
+    EOI
+    cmd </foo >/bar 2>/baz
+    EOO
+  }
+
+  : regex
+  :
+  {
+    : portable-path
+    :
+    $* <<EOI >>EOO
+    cmd >/~%foo% 2>/~%bar%
+    EOI
+    cmd >/~%foo% 2>/~%bar%
+    EOO
+  }
+}
+
+: doc
+:
+{
+  : literal
+  :
+  {
+    : portable-path
+    :
+    $* <<EOI >>EOO
+    cmd <</EOI_ >/EOO_ 2>/EOE_
+    foo
+    EOI_
+    bar
+    EOO_
+    baz
+    EOE_
+    EOI
+    cmd <</EOI_ >/EOO_ 2>/EOE_
+    foo
+    EOI_
+    bar
+    EOO_
+    baz
+    EOE_
+    EOO
+
+    : sharing
+    :
+    {
+      : in-out
+      :
+      $* <<EOI >>EOO
+      cmd <<:/EOF >>:/EOF
+      foo
+      EOF
+      EOI
+      cmd <<:/EOF >>:/EOF
+      foo
+      EOF
+      EOO
+
+      : different
+      :
+      {
+        : modifiers
+        :
+        $* <<EOI 2>>EOE != 0
+        cmd <<:/EOF >>:EOF
+        foo
+        EOF
+        EOI
+        testscript:1:16: error: different modifiers for shared here-document 'EOF'
+        EOE
+
+        : quoting
+        :
+        $* <<EOI 2>>EOE != 0
+        cmd <<EOF >>"EOF"
+        foo
+        EOF
+        EOI
+        testscript:1:13: error: different quoting for shared here-document 'EOF'
+        EOE
+      }
+    }
+  }
+
+  : regex
+  :
+  {
+    : portable-path
+    :
+    $* <<EOI >>EOO
+    cmd >/~%EOF% 2>/~%EOE%
+    foo
+    EOF
+    bar
+    EOE
+    EOI
+    cmd >/~%EOF% 2>/~%EOE%
+    foo
+    EOF
+    bar
+    EOE
+    EOO
+
+    : sharing
+    :
+    {
+      : in-out
+      :
+      $* <<EOI >>EOO
+      cmd >>~/EOF/ 2>>~/EOF/
+      foo
+      EOF
+      EOI
+      cmd >>~/EOF/ 2>>~/EOF/
+      foo
+      EOF
+      EOO
+
+      : different
+      :
+      {
+        : introducers
+        :
+        $* <<EOI 2>>EOE != 0
+        cmd >>~/EOF/ 2>>~%EOF%
+        foo
+        EOF
+        EOI
+        testscript:1:18: error: different introducers for shared here-document regex 'EOF'
+        EOE
+
+        : flags
+        :
+        $* <<EOI 2>>EOE != 0
+        cmd >>~/EOF/ 2>>~/EOF/i
+        foo
+        EOF
+        EOI
+        testscript:1:18: error: different global flags for shared here-document regex 'EOF'
+        EOE
+      }
+    }
+  }
+}
+
+: file
+:
+{
+  : cmp
+  :
+  $* <<EOI >>EOO
+  cmd 0<<<a 1>>>b 2>>>c
+  EOI
+  cmd <<<a >>>b 2>>>c
+  EOO
+
+  : write
+  :
+  $* <<EOI >>EOO
+  cmd 1>=b 2>+c
+  EOI
+  cmd >=b 2>+c
+  EOO
+
+  : quote
+  :
+  $* <<EOI >>EOO
+  cmd 0<<<"a f" 1>="b f" 2>+"c f"
+  EOI
+  cmd <<<'a f' >='b f' 2>+'c f'
+  EOO
+
+  : in
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd <<<
+    EOI
+    testscript:1:8: error: missing stdin file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd <<<""
+    EOI
+    testscript:1:8: error: empty stdin redirect path
+    EOE
+  }
+
+  : out
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd >=
+    EOI
+    testscript:1:7: error: missing stdout file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd >=""
+    EOI
+    testscript:1:7: error: empty stdout redirect path
+    EOE
+  }
+
+  : err
+  :
+  {
+    : missed
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd 2>=
+    EOI
+    testscript:1:8: error: missing stderr file
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE !=0
+    cmd 2>=""
+    EOI
+    testscript:1:8: error: empty stderr redirect path
+    EOE
+  }
+}
+
+: merge
+{
+  : out
+  :
+  {
+    : err
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2
+    EOI
+    cmd >&2
+    EOO
+
+    : no-mutual
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2 2>&1 2>a
+    EOI
+    cmd >&2 2>a
+    EOO
+
+    : not-descriptor
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&a
+    EOI
+    testscript:1:8: error: stdout merge redirect file descriptor must be 2
+    EOE
+
+    : self
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&1
+    EOI
+    testscript:1:8: error: stdout merge redirect file descriptor must be 2
+    EOE
+
+    : missed
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 1>&
+    EOI
+    testscript:1:8: error: missing stdout file descriptor
+    EOE
+  }
+
+  : err
+  {
+    : out
+    :
+    $* <<EOI >>EOO
+    cmd 2>&1
+    EOI
+    cmd 2>&1
+    EOO
+
+    : no-mutual
+    :
+    $* <<EOI >>EOO
+    cmd 1>&2 2>&1 >a
+    EOI
+    cmd >a 2>&1
+    EOO
+
+    : not-descriptor
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&a
+    EOI
+    testscript:1:8: error: stderr merge redirect file descriptor must be 1
+    EOE
+
+    : self
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&2
+    EOI
+    testscript:1:8: error: stderr merge redirect file descriptor must be 1
+    EOE
+
+    : missed
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd 2>&
+    EOI
+    testscript:1:8: error: missing stderr file descriptor
+    EOE
+  }
+
+  : mutual
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd 1>&2 2>&1
+  EOI
+  testscript:1:14: error: stdout and stderr redirected to each other
+  EOE
+}
diff --git a/build2/test/script/parser+regex.test.testscript b/build2/test/script/parser+regex.test.testscript
new file mode 100644
index 0000000..031492e
--- /dev/null
+++ b/build2/test/script/parser+regex.test.testscript
@@ -0,0 +1,223 @@
+# file      : build2/test/script/parser+regex.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: here-string
+:
+{
+  : stdout
+  :
+  {
+    : missed
+    :
+    $* <'cmd >~' 2>>EOE != 0
+    testscript:1:7: error: missing stdout here-string regex
+    EOE
+
+    : no-introducer
+    :
+    $* <'cmd >~""' 2>>EOE != 0
+    testscript:1:7: error: no introducer character in stdout regex redirect
+    EOE
+
+    : no-term-introducer
+    :
+    $* <'cmd >~/' 2>>EOE != 0
+    testscript:1:7: error: no closing introducer character in stdout regex redirect
+    EOE
+
+    : portable-path-introducer
+    :
+    $* <'cmd >/~/foo/' 2>>EOE != 0
+    testscript:1:8: error: portable path modifier and '/' introducer in stdout regex redirect
+    EOE
+
+    : empty
+    :
+    $* <'cmd >~//' 2>>EOE != 0
+    testscript:1:7: error: stdout regex redirect is empty
+    EOE
+
+    : no-flags
+    :
+    $* <'cmd >~/fo*/' >'cmd >~/fo*/'
+
+    : idot
+    :
+    $* <'cmd >~/fo*/d' >'cmd >~/fo*/d'
+
+    : icase
+    :
+    $* <'cmd >~/fo*/i' >'cmd >~/fo*/i'
+
+    : invalid-flags1
+    :
+    $* <'cmd >~/foo/z' 2>>EOE != 0
+    testscript:1:7: error: junk at the end of stdout regex redirect
+    EOE
+
+    : invalid-flags2
+    :
+    $* <'cmd >~/foo/iz' 2>>EOE != 0
+    testscript:1:7: error: junk at the end of stdout regex redirect
+    EOE
+
+    : no-newline
+    :
+    $* <'cmd >:~/fo*/' >'cmd >:~/fo*/'
+  }
+
+  : stderr
+  :
+  {
+    : missed
+    :
+    $* <'cmd 2>~' 2>>EOE != 0
+    testscript:1:8: error: missing stderr here-string regex
+    EOE
+
+    : no-introducer
+    :
+    : Note that there is no need to reproduce all the errors as for stdout.
+    : All we need is to make sure that the proper description is passed to
+    : the parse_regex() function.
+    :
+    $* <'cmd 2>~""' 2>>EOE != 0
+    testscript:1:8: error: no introducer character in stderr regex redirect
+    EOE
+  }
+
+  : modifier-last
+  :
+  $* <'cmd >~/x' 2>>EOE != 0
+  testscript:1:7: error: no closing introducer character in stdout regex redirect
+  EOE
+}
+
+: here-doc
+:
+{
+  : stdout
+  :
+  {
+    : missed
+    :
+    $* <'cmd >>~' 2>>EOE != 0
+    testscript:1:8: error: expected here-document regex end marker
+    EOE
+
+    : portable-path-introducer
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd >>/~/EOO/
+    foo
+    EOO
+    EOI
+    testscript:1:5: error: portable path modifier and '/' introducer in here-document regex end marker
+    EOE
+
+    : unterminated-line-char
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd >>~/EOO/
+    /
+    EOO
+    EOI
+    testscript:2:1: error: no syntax line characters
+    EOE
+
+    : empty
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd >>:~/EOO/
+    EOO
+    EOI
+    testscript:2:1: error: empty here-document regex
+    EOE
+
+    : no-flags
+    :
+    $* <<EOI >>EOO
+    cmd 2>>~/EOE/
+    foo
+    /?
+    /foo/
+    /foo/*
+    /foo/i
+    /foo/i*
+
+    //
+    //*
+    EOE
+    EOI
+    cmd 2>>~/EOE/
+    foo
+    /?
+    /foo/
+    /foo/*
+    /foo/i
+    /foo/i*
+
+    //
+    //*
+    EOE
+    EOO
+
+    : no-newline
+    :
+    $* <'cmd >:~/fo*/' >'cmd >:~/fo*/'
+    $* <<EOI >>EOO
+    cmd 2>>:~/EOE/
+    foo
+    EOE
+    EOI
+    cmd 2>>:~/EOE/
+    foo
+    EOE
+    EOO
+
+    : end-marker-restore
+    :
+    {
+      : idot
+      :
+      $* <<EOI >>EOO
+      cmd 2>>~/EOE/d
+      foo
+      EOE
+      EOI
+      cmd 2>>~/EOE/d
+      foo
+      EOE
+      EOO
+
+      : icase
+      :
+      $* <<EOI >>EOO
+      cmd 2>>~/EOE/i
+      foo
+      EOE
+      EOI
+      cmd 2>>~/EOE/i
+      foo
+      EOE
+      EOO
+    }
+  }
+
+  : stderr
+  :
+  {
+    : missed
+    :
+    $* <'cmd 2>>~' 2>>EOE != 0
+    testscript:1:9: error: expected here-document regex end marker
+    EOE
+  }
+
+  : modifier-last
+  :
+  $* <'cmd >>~:/FOO/' 2>>EOE != 0
+  testscript:1:8: error: expected here-document regex end marker
+  EOE
+}
diff --git a/build2/test/script/parser+scope-if.test.testscript b/build2/test/script/parser+scope-if.test.testscript
new file mode 100644
index 0000000..faae297
--- /dev/null
+++ b/build2/test/script/parser+scope-if.test.testscript
@@ -0,0 +1,554 @@
+# file      : build2/test/script/parser+scope-if.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: if
+:
+{
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if true foo
+  {
+    cmd
+  }
+  EOI
+  {
+    ? true foo
+    {
+      cmd
+    }
+  }
+  EOO
+
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if false foo
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false foo
+  }
+  EOO
+
+  : not-true
+  :
+  $* -s <<EOI >>EOO
+  if! true
+  {
+    cmd
+  }
+  EOI
+  {
+    ? true
+  }
+  EOO
+
+  : not-false
+  :
+  $* -s <<EOI >>EOO
+  if! false
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    {
+      cmd
+    }
+  }
+  EOO
+
+  : eos-inside
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  {
+  EOI
+  testscript:3:1: error: expected '}' at the end of the scope
+  EOE
+
+}
+
+: elif
+:
+{
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd1
+  }
+  EOI
+  {
+    ? false
+    ? true
+    {
+      cmd1
+    }
+  }
+  EOO
+
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif false
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? false
+  }
+  EOO
+
+  : not-false
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif! false
+  {
+    cmd1
+  }
+  EOI
+  {
+    ? false
+    ? false
+    {
+      cmd1
+    }
+  }
+  EOO
+
+  : not-true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif! true
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+  }
+  EOO
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
+  {
+    cmd
+  }
+  else
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd
+  }
+  EOI
+  testscript:9:1: error: 'elif' after 'else'
+  EOE
+}
+
+: else
+:
+{
+  : true
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  else
+  {
+    cmd1
+  }
+  EOI
+  {
+    ? false
+    {
+      cmd1
+    }
+  }
+  EOO
+
+  : false
+  :
+  $* -s <<EOI >>EOO
+  if true
+  {
+    cmd1
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? true
+    {
+      cmd1
+    }
+  }
+  EOO
+
+  : chain
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif false
+  {
+    cmd
+    cmd
+  }
+  elif false
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd1
+    cmd2
+  }
+  elif false
+  {
+    cmd
+  }
+  else
+  {
+    cmd
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? false
+    ? false
+    ? true
+    {
+      {
+        cmd1
+      }
+      {
+        cmd2
+      }
+    }
+  }
+  EOO
+
+  : scope-expected
+  :
+  $* <<EOI 2>>EOE != 0
+  if
+  {
+    cmd
+  }
+  else
+  cmd
+  EOI
+  testscript:5:1: error: expected scope after 'else'
+  EOE
+
+  : after-else
+  :
+  $* <<EOI 2>>EOE != 0
+  if false
+  {
+    cmd
+  }
+  else
+  {
+    cmd
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  testscript:9:1: error: 'else' after 'else'
+  EOE
+}
+
+: nested
+:
+{
+  : take
+  :
+  $* -s <<EOI >>EOO
+  if true
+  {
+    cmd1
+    if false
+    {
+      cmd
+    }
+    elif false
+    {
+      if true
+      {
+        cmd
+      }
+    }
+    else
+    {
+      cmd2
+    }
+    cmd3
+  }
+  EOI
+  {
+    ? true
+    {
+      {
+        cmd1
+      }
+      ? false
+      ? false
+      {
+        {
+          cmd2
+        }
+      }
+      {
+        cmd3
+      }
+    }
+  }
+  EOO
+
+  : skip
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd1
+    if false
+    {
+      cmd
+    }
+    elif false
+    {
+      if true
+      {
+        cmd
+      }
+    }
+    else
+    {
+      cmd2
+    }
+    cmd3
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    {
+      {
+        cmd
+      }
+    }
+  }
+  EOO
+}
+
+: demote
+:
+{
+  : group
+  : Chain remains a group
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd1
+    cmd2
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+    {
+      {
+        cmd1
+      }
+      {
+        cmd2
+      }
+    }
+  }
+  EOO
+
+  : test
+  : Chain demoted to test
+  :
+  $* -s <<EOI >>EOO
+  if false
+  {
+    cmd
+  }
+  elif true
+  {
+    cmd1
+  }
+  else
+  {
+    cmd
+  }
+  EOI
+  {
+    ? false
+    ? true
+    {
+      cmd1
+    }
+  }
+  EOO
+}
+
+: line-index
+: Make sure command line index spans setup/if/teardown
+:
+$* -s -l <<EOI >>EOO
++setup          # 1
+
+if false one    # 2
+{
+  cmd
+}
+elif false two  # 3
+{
+  cmd
+}
+elif true       # 4
+{
+  cmd1
+}
+elif false      # 5
+{
+  cmd
+}
+else
+{
+  cmd
+}
+
+if false one    # 6
+{
+  cmd
+}
+elif false two  # 7
+{
+  cmd
+}
+else
+{
+  cmd2
+}
+
+-tdown          # 8
+EOI
+{
+  +setup # 1
+  ? false one # 2
+  ? false two # 3
+  ? true # 4
+  {
+    cmd1 # 0
+  }
+  ? false one # 6
+  ? false two # 7
+  {
+    cmd2 # 0
+  }
+  -tdown # 8
+}
+EOO
+
+: scope-comman-if
+:
+$* -s <<EOI >>EOO
+if true
+{
+  cmd
+}
+if true
+  cmd1
+  cmd2
+end
+EOI
+{
+  ? true
+  {
+    cmd
+  }
+  {
+    ? true
+    cmd1
+    cmd2
+  }
+}
+EOO
+
+: shared-id-desc
+:
+$* -s -i <<EOI >>EOO
+: test summary
+:
+if false
+{
+  cmd
+}
+else
+{
+  cmd1
+}
+EOI
+{
+  ? false
+  : sm:test summary
+  { # 3
+    cmd1
+  }
+}
+EOO
diff --git a/build2/test/script/parser+scope.test.testscript b/build2/test/script/parser+scope.test.testscript
new file mode 100644
index 0000000..9147161
--- /dev/null
+++ b/build2/test/script/parser+scope.test.testscript
@@ -0,0 +1,280 @@
+# file      : build2/test/script/parser+scope.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+$* testscript     <'cmd $@' >"cmd 1"     : id-testscript
+$* foo.testscript <'cmd $@' >"cmd foo/1" : id
+
+: wd-testscript
+:
+$* testscript <'cmd "$~"' >~"%cmd '?.+[/\\\\]test-driver[/\\\\]1'?%"
+
+: wd
+:
+$* foo.testscript <'cmd "$~"' >~"%cmd '?.+[/\\\\]test-driver[/\\\\]foo[/\\\\]1'?%"
+
+: group
+:
+{
+  : empty
+  :
+  $* -s <<EOI
+  {
+  }
+  EOI
+
+  : empty-empty
+  :
+  $* -s <<EOI
+  {
+    {
+    }
+  }
+  EOI
+
+  : non-empty
+  :
+  $* -s <<EOI >>EOO
+  {
+    cmd1
+    cmd2
+  }
+  EOI
+  {
+    {
+      {
+        cmd1
+      }
+      {
+        cmd2
+      }
+    }
+  }
+  EOO
+}
+
+: test
+:
+{
+  : explicit
+  :
+  {
+    : one-level
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      cmd
+    }
+    EOI
+    {
+      { # 1
+        cmd
+      }
+    }
+    EOO
+
+    : nested
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      {
+        cmd
+      }
+    }
+    EOI
+    {
+      { # 1
+        cmd
+      }
+    }
+    EOO
+
+    : var
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      x = abc
+      cmd $x
+    }
+    EOI
+    {
+      { # 1
+        cmd abc
+      }
+    }
+    EOO
+
+    : setup
+    :
+    $* -s -i <<EOI >>EOO
+    {
+      x = abc
+      +setup
+      cmd $x
+    }
+    EOI
+    {
+      { # 1
+        +setup
+        { # 1/4
+          cmd abc
+        }
+      }
+    }
+    EOO
+  }
+
+  : implicit
+  {
+    : one-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1
+    EOI
+    {
+      {
+        cmd1
+      }
+    }
+    EOO
+
+    : two-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    cmd2
+    EOI
+    {
+      {
+        cmd1
+        cmd2
+      }
+    }
+    EOO
+
+    : three-cmd
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    cmd2;
+    cmd3
+    EOI
+    {
+      {
+        cmd1
+        cmd2
+        cmd3
+      }
+    }
+    EOO
+
+    : var
+    :
+    $* -s <<EOI >>EOO
+    cmd1;
+    x = abc;
+    cmd2 $x
+    EOI
+    {
+      {
+        cmd1
+        cmd2 abc
+      }
+    }
+    EOO
+
+    : var-first
+    :
+    $* -s <<EOI >>EOO
+    x = abc;
+    cmd $x
+    EOI
+    {
+      {
+        cmd abc
+      }
+    }
+    EOO
+
+    : var-setup-tdown
+    :
+    $* -s <<EOI >>EOO
+    x = abc
+    cmd $x
+    y = 123
+    EOI
+    {
+      {
+        cmd abc
+      }
+    }
+    EOO
+
+    : after-tdown
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd1
+    x = abc
+    cmd2
+    EOI
+    testscript:3:1: error: test after teardown
+      testscript:2:1: info: last teardown line appears here
+    EOE
+  }
+}
+
+: expected
+{
+  : newline-lcbrace
+  :
+  $* <:"{x" 2>>EOE != 0
+  testscript:1:2: error: expected newline after '{'
+  EOE
+
+  : rcbrace
+  :
+  $* <"{" 2>>EOE != 0
+  testscript:2:1: error: expected '}' at the end of the scope
+  EOE
+
+  : line-rcbrace
+  :
+  $* <<EOI 2>>EOE != 0
+  {
+    cmd;
+  }
+  EOI
+  testscript:3:1: error: expected another line after ';'
+  EOE
+
+  : newline-rcbrace
+  :
+  $* <<:EOI 2>>EOE != 0
+  {
+  }
+  EOI
+  testscript:2:2: error: expected newline after '}'
+  EOE
+
+  : line-eof
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  EOI
+  testscript:2:1: error: expected another line after ';'
+  EOE
+
+  : newline-cmd
+  :
+  $* <<:EOI 2>>EOE != 0
+  cmd;
+  EOI
+  testscript:1:5: error: expected newline instead of <end of file>
+  EOE
+
+  : newline-var
+  :
+  $* <:"x = abc;" 2>>EOE != 0
+  testscript:1:9: error: expected newline instead of <end of file>
+  EOE
+}
diff --git a/build2/test/script/parser+setup-teardown.test.testscript b/build2/test/script/parser+setup-teardown.test.testscript
new file mode 100644
index 0000000..9d67309
--- /dev/null
+++ b/build2/test/script/parser+setup-teardown.test.testscript
@@ -0,0 +1,151 @@
+# file      : build2/test/script/parser+setup-teardown.test.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+: setup
+:
+{
+  : followed
+  :
+  {
+    : semi
+    :
+    $* <"+cmd;" 2>>EOE != 0
+    testscript:1:5: error: ';' after setup command
+    EOE
+
+    : colon
+    :
+    $* <"+cmd:" 2>>EOE != 0
+    testscript:1:5: error: ':' after setup command
+    EOE
+  }
+
+  : after
+  :
+  {
+    : test
+    :
+    $* <<EOI 2>>EOE != 0
+    cmd
+    +cmd
+    EOI
+    testscript:2:1: error: setup command after tests
+    EOE
+
+    : after-tdownt
+    :
+    $* <<EOI 2>>EOE != 0
+    -cmd
+    +cmd
+    EOI
+    testscript:2:1: error: setup command after teardown
+    EOE
+  }
+
+  : in-test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  +cmd
+  EOI
+  testscript:2:1: error: setup command in test
+  EOE
+}
+
+: tdown
+:
+{
+  : followed
+  :
+  {
+    : semi
+    :
+    $* <"-cmd;" 2>>EOE != 0
+    testscript:1:5: error: ';' after teardown command
+    EOE
+
+    : colon
+    :
+    $* <"-cmd:" 2>>EOE != 0
+    testscript:1:5: error: ':' after teardown command
+    EOE
+  }
+
+  : in-test
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd;
+  -cmd
+  EOI
+  testscript:2:1: error: teardown command in test
+  EOE
+}
+
+: var
+:
+{
+  : between-tests
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  x = y
+  cmd
+  EOI
+  testscript:3:1: error: test after teardown
+    testscript:2:1: info: last teardown line appears here
+  EOE
+
+  : between-tests-scope
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  x = y
+  {
+    cmd
+  }
+  EOI
+  testscript:3:1: error: scope after teardown
+    testscript:2:1: info: last teardown line appears here
+  EOE
+
+  : between-tests-command-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  x = y
+  if true
+    cmd
+  end
+  EOI
+  testscript:3:1: error: test after teardown
+    testscript:2:1: info: last teardown line appears here
+  EOE
+
+  : between-tests-scope-if
+  :
+  $* <<EOI 2>>EOE != 0
+  cmd
+  x = y
+  if true
+  {
+    cmd
+  }
+  EOI
+  testscript:3:1: error: scope after teardown
+    testscript:2:1: info: last teardown line appears here
+  EOE
+
+  : between-tests-variable-if
+  :
+  $* <<EOI >>EOO
+  cmd
+  x = y
+  if true
+    y = x
+  end
+  EOI
+  cmd
+  ? true
+  EOO
+}
diff --git a/build2/test/script/parser.test.cxx b/build2/test/script/parser.test.cxx
new file mode 100644
index 0000000..1862f98
--- /dev/null
+++ b/build2/test/script/parser.test.cxx
@@ -0,0 +1,242 @@
+// file      : build2/test/script/parser.test.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <cassert>
+#include <iostream>
+
+#include <build2/types.hxx>
+#include <build2/utility.hxx>
+
+#include <build2/target.hxx>
+#include <build2/context.hxx>   // reset()
+#include <build2/scheduler.hxx>
+
+#include <build2/test/target.hxx>
+
+#include <build2/test/script/token.hxx>
+#include <build2/test/script/parser.hxx>
+#include <build2/test/script/runner.hxx>
+
+using namespace std;
+
+namespace build2
+{
+  namespace test
+  {
+    namespace script
+    {
+      // Here we assume we are running serially.
+      //
+      class print_runner: public runner
+      {
+      public:
+        print_runner (bool scope, bool id, bool line)
+            : scope_ (scope), id_ (id), line_ (line) {}
+
+        virtual bool
+        test (scope&) const override
+        {
+          return true;
+        }
+
+        virtual void
+        enter (scope& s, const location&) override
+        {
+          if (s.desc)
+          {
+            const auto& d (*s.desc);
+
+            if (!d.id.empty ())
+              cout << ind_ << ": id:" << d.id << endl;
+
+            if (!d.summary.empty ())
+              cout << ind_ << ": sm:" << d.summary << endl;
+
+            if (!d.details.empty ())
+            {
+              if (!d.id.empty () || !d.summary.empty ())
+                cout << ind_ << ":" << endl; // Blank.
+
+              const auto& s (d.details);
+              for (size_t b (0), e (0), n; e != string::npos; b = e + 1)
+              {
+                e = s.find ('\n', b);
+                n = ((e != string::npos ? e : s.size ()) - b);
+
+                cout << ind_ << ':';
+                if (n != 0)
+                {
+                  cout << ' ';
+                  cout.write (s.c_str () + b, static_cast<streamsize> (n));
+                }
+                cout << endl;
+              }
+            }
+          }
+
+          if (scope_)
+          {
+            cout << ind_ << "{";
+
+            if (id_ && !s.id_path.empty ()) // Skip empty root scope id.
+              cout << " # " << s.id_path.string ();
+
+            cout << endl;
+
+            ind_ += "  ";
+          }
+        }
+
+        virtual void
+        run (scope&,
+             const command_expr& e, command_type t,
+             size_t i,
+             const location&) override
+        {
+          const char* s (nullptr);
+
+          switch (t)
+          {
+          case command_type::test:     s = "";  break;
+          case command_type::setup:    s = "+"; break;
+          case command_type::teardown: s = "-"; break;
+          }
+
+          cout << ind_ << s << e;
+
+          if (line_)
+            cout << " # " << i;
+
+          cout << endl;
+        }
+
+        virtual bool
+        run_if (scope&,
+                const command_expr& e,
+                size_t i,
+                const location&) override
+        {
+          cout << ind_ << "? " << e;
+
+          if (line_)
+            cout << " # " << i;
+
+          cout << endl;
+
+          return e.back ().pipe.back ().program.string () == "true";
+        }
+
+        virtual void
+        leave (scope&, const location&) override
+        {
+          if (scope_)
+          {
+            ind_.resize (ind_.size () - 2);
+            cout << ind_ << "}" << endl;
+          }
+        }
+
+      private:
+        bool scope_;
+        bool id_;
+        bool line_;
+        string ind_;
+      };
+
+      // Usage: argv[0] [-s] [-i] [-l] [<testscript-name>]
+      //
+      int
+      main (int argc, char* argv[])
+      {
+        tracer trace ("main");
+
+        init (argv[0], 1);  // Fake build system driver, default verbosity.
+        sched.startup (1);  // Serial execution.
+        reset (strings ()); // No command line variables.
+
+        bool scope (false);
+        bool id (false);
+        bool line (false);
+        path name;
+
+        for (int i (1); i != argc; ++i)
+        {
+          string a (argv[i]);
+
+          if (a == "-s")
+            scope = true;
+          else if (a == "-i")
+            id = true;
+          else if (a == "-l")
+            line = true;
+          else
+          {
+            name = path (move (a));
+            break;
+          }
+        }
+
+        if (name.empty ())
+          name = path ("testscript");
+
+        assert (!id || scope); // Id can only be printed with scope.
+
+        try
+        {
+          cin.exceptions (istream::failbit | istream::badbit);
+
+          // Enter mock targets. Use fixed names and paths so that we can use
+          // them in expected results. Strictly speaking target paths should
+          // be absolute. However, the testscript implementation doesn't
+          // really care.
+          //
+          file& tt (
+            targets.insert<file> (work,
+                                  dir_path (),
+                                  "driver",
+                                  string (),
+                                  trace));
+
+          value& v (
+            tt.assign (
+              var_pool.rw ().insert<target_triplet> (
+                "test.target", variable_visibility::project)));
+
+          v = cast<target_triplet> ((*global_scope)["build.host"]);
+
+          testscript& st (
+            targets.insert<testscript> (work,
+                                        dir_path (),
+                                        name.leaf ().base ().string (),
+                                        name.leaf ().extension (),
+                                        trace));
+
+          tt.path (path ("driver"));
+          st.path (name);
+
+          // Parse and run.
+          //
+          parser p;
+          script s (tt, st, dir_path (work) /= "test-driver");
+          p.pre_parse (cin, s);
+
+          print_runner r (scope, id, line);
+          p.execute (s, r);
+        }
+        catch (const failed&)
+        {
+          return 1;
+        }
+
+        return 0;
+      }
+    }
+  }
+}
+
+int
+main (int argc, char* argv[])
+{
+  return build2::test::script::main (argc, argv);
+}
diff --git a/build2/test/script/regex.test.cxx b/build2/test/script/regex.test.cxx
new file mode 100644
index 0000000..7b89e4d
--- /dev/null
+++ b/build2/test/script/regex.test.cxx
@@ -0,0 +1,301 @@
+// file      : build2/test/script/regex.test.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <regex>
+#include <type_traits> // is_pod, is_array
+
+#include <build2/test/script/regex.hxx>
+
+using namespace std;
+using namespace build2::test::script::regex;
+
+int
+main ()
+{
+  using lc = line_char;
+  using ls = line_string;
+  using lr = line_regex;
+  using cf = char_flags;
+  using cr = char_regex;
+
+  // Test line_char.
+  //
+  {
+    static_assert (is_pod<lc>::value && !is_array<lc>::value,
+                   "line_char must be char-like");
+
+    // Zero-initialed line_char should be the null-char as required by
+    // char_traits<>::length() specification.
+    //
+    assert (lc () == lc::nul);
+
+    line_pool p;
+
+    assert (lc::eof == -1);
+    assert (lc::nul == 0);
+
+    enum meta {mn = 'n', mp = 'p'};
+
+    // Special roundtrip.
+    //
+    assert (lc ('0').special ()       == '0');
+    assert (lc (0).special ()         == 0);
+    assert (lc (-1).special ()        == -1);
+    assert (lc ('p').special ()       == 'p');
+    assert (lc (u'\u2028').special () == u'\u2028');
+
+    // Special comparison.
+    //
+    assert (lc ('0') == lc ('0'));
+    assert (lc ('0') == '0');
+    assert (lc ('n') == mn);
+    assert (mn       == static_cast<meta> (lc ('n')));
+
+    assert (lc ('0') != lc ('1'));
+    assert (lc ('0') != '1');
+    assert (lc ('n') != mp);
+    assert (lc ('0') != lc ("0", p));
+    assert (lc ('0') != lc (cr ("0"), p));
+
+    assert (lc ('0') < lc ('1'));
+    assert (lc ('0') < '1');
+    assert (lc ('1') < lc ("0", p));
+    assert (lc ('n') < mp);
+
+    assert (lc ('0') <= '1');
+    assert (lc ('0') <= lc ('1'));
+    assert (lc ('n') <= mn);
+    assert (lc ('1') <= lc ("0", p));
+
+    // Literal roundtrip.
+    //
+    assert (*lc ("abc", p).literal () == "abc");
+
+    // Literal comparison.
+    //
+    assert (lc ("a", p)            == lc ("a", p));
+    assert (lc ("a", p).literal () == lc ("a", p).literal ());
+    assert (char (lc ("a", p))     == '\a');
+
+    assert (lc ("a", p)   != lc ("b", p));
+    assert (!(lc ("a", p) != lc (cr ("a"), p)));
+    assert (lc ("a", p)   != lc (cr ("b"), p));
+
+    assert (lc ("a", p)   < lc ("b", p));
+    assert (!(lc ("a", p) < lc (cr ("a"), p)));
+
+    assert (lc ("a", p) <= lc ("b", p));
+    assert (lc ("a", p) <= lc (cr ("a"), p));
+    assert (lc ("a", p) <  lc (cr ("c"), p));
+
+    // Regex roundtrip.
+    //
+    assert (regex_match ("abc", *lc (cr ("abc"), p).regex ()));
+
+    // Regex flags.
+    //
+    // icase
+    //
+    assert (regex_match ("ABC", cr ("abc", cf::icase)));
+
+    // idot
+    //
+    assert (!regex_match ("a", cr ("[.]",  cf::idot)));
+    assert (!regex_match ("a", cr ("[\\.]", cf::idot)));
+
+    assert (regex_match  ("a", cr (".")));
+    assert (!regex_match ("a", cr (".", cf::idot)));
+    assert (regex_match  ("a", cr ("\\.", cf::idot)));
+    assert (!regex_match ("a", cr ("\\.")));
+
+    // regex::transform()
+    //
+    // The function is static and we can't test it directly. So we will test
+    // it indirectly via regex matches.
+    //
+    // @@ Would be nice to somehow address the inability to test internals (not
+    //    exposed via headers). As a part of utility library support?
+    //
+    assert (regex_match  (".a[.", cr (".\\.\\[[.]",   cf::idot)));
+    assert (regex_match  (".a[.", cr (".\\.\\[[\\.]", cf::idot)));
+    assert (!regex_match ("ba[.", cr (".\\.\\[[.]",   cf::idot)));
+    assert (!regex_match (".a[b", cr (".\\.\\[[.]",   cf::idot)));
+    assert (!regex_match (".a[b", cr (".\\.\\[[\\.]", cf::idot)));
+
+    // Regex comparison.
+    //
+    assert (lc ("a", p)        == lc (cr ("a|b"), p));
+    assert (lc (cr ("a|b"), p) == lc ("a", p));
+  }
+
+  // Test char_traits<line_char>.
+  //
+  {
+    using ct = char_traits<lc>;
+    using vc = vector<lc>;
+
+    lc c;
+    ct::assign (c, '0');
+    assert (c == ct::char_type ('0'));
+
+    assert (ct::to_char_type (c) == c);
+    assert (ct::to_int_type (c) == c);
+
+    assert (ct::eq_int_type (c, c));
+    assert (!ct::eq_int_type (c, lc::eof));
+
+    assert (ct::eof () == lc::eof);
+
+    assert (ct::not_eof (c) == c);
+    assert (ct::not_eof (lc::eof) != lc::eof);
+
+    ct::assign (&c, 1, '1');
+    assert (c == ct::int_type ('1'));
+
+    assert (ct::eq (lc ('0'), lc ('0')));
+    assert (ct::lt (lc ('0'), lc ('1')));
+
+    vc v1 ({'0', '1', '2'});
+    vc v2 (3, lc::nul);
+
+    assert (ct::find (v1.data (), 3, '1') == v1.data () + 1);
+
+    ct::copy (v2.data (), v1.data (), 3);
+    assert (v2 == v1);
+
+    v2.push_back (lc::nul);
+    assert (ct::length (v2.data ()) == 3);
+
+    // Overlaping ranges.
+    //
+    ct::move (v1.data () + 1, v1.data (), 2);
+    assert (v1 == vc ({'0', '0', '1'}));
+
+    v1 = vc ({'0', '1', '2'});
+    ct::move (v1.data (), v1.data () + 1, 2);
+    assert (v1 == vc ({'1', '2', '2'}));
+  }
+
+  // Test line_char_locale and ctype<line_char> (only non-trivial functions).
+  //
+  {
+    using ct = ctype<lc>;
+
+    line_char_locale l;
+    assert (has_facet<ct> (l));
+
+    // It is better not to create q facet on stack as it is
+    // reference-countable.
+    //
+    const ct& t (use_facet<ct> (l));
+    line_pool p;
+
+    assert (t.is  (ct::digit, '0'));
+    assert (!t.is (ct::digit, '?'));
+    assert (!t.is (ct::digit, lc ("0", p)));
+
+    const lc chars[] = { '0', '?' };
+    ct::mask m[2];
+
+    const lc* b (chars);
+    const lc* e (chars + 2);
+
+    // Cast flag value to mask type and compare to mask.
+    //
+    auto fl = [] (ct::mask m, ct::mask f) {return m == f;};
+
+    t.is (b, e, m);
+    assert (fl (m[0], ct::digit) && fl (m[1], 0));
+
+    assert (t.scan_is (ct::digit, b, e) == b);
+    assert (t.scan_is (0, b, e) == b + 1);
+
+    assert (t.scan_not (ct::digit, b, e) == b + 1);
+    assert (t.scan_not (0, b, e) == b);
+
+    {
+      char nr[] = "0?";
+      lc wd[2];
+      t.widen (nr, nr + 2, wd);
+      assert (wd[0] == b[0] && wd[1] == b[1]);
+    }
+
+    {
+      lc wd[] = {'0', lc ("a", p)};
+      char nr[2];
+      t.narrow (wd, wd + 2, '-', nr);
+      assert (nr[0] == '0' && nr[1] == '-');
+    }
+  }
+
+  // Test regex_traits<line_char>. Functions other that value() are trivial.
+  //
+  {
+    regex_traits<lc> t;
+
+    const int  radix[] = {8, 10}; // Radix 16 is not supported by line_char.
+    const char digits[] = "0123456789ABCDEF";
+
+    for (size_t r (0); r < 2; ++r)
+    {
+      for (int i (0); i < radix[r]; ++i)
+        assert (t.value (digits[i], radix[r]) == i);
+    }
+  }
+
+  // Test line_regex construction.
+  //
+  {
+    line_pool p;
+    lr r1 ({lc ("foo", p), lc (cr ("ba(r|z)"), p)}, move (p));
+
+    lr r2 (move (r1));
+    assert (regex_match (ls ({lc ("foo", r2.pool), lc ("bar", r2.pool)}), r2));
+    assert (!regex_match (ls ({lc ("foo", r2.pool), lc ("ba", r2.pool)}), r2));
+  }
+
+  // Test line_regex match.
+  //
+  {
+    line_pool p;
+
+    const lc foo ("foo", p);
+    const lc bar ("bar", p);
+    const lc baz ("baz", p);
+    const lc blank ("", p);
+
+    assert (regex_match  (ls ({foo, bar}), lr ({foo, bar})));
+    assert (!regex_match (ls ({foo, baz}), lr ({foo, bar})));
+
+    assert (regex_match (ls ({bar, foo}),
+                         lr ({'(', foo, '|', bar, ')', '+'})));
+
+    assert (regex_match (ls ({foo, foo, bar}),
+                         lr ({'(', foo, ')', '\\', '1', bar})));
+
+    assert (regex_match (ls ({foo}),   lr ({lc (cr ("fo+"), p)})));
+    assert (regex_match (ls ({foo}),   lr ({lc (cr (".*"), p)})));
+    assert (regex_match (ls ({blank}), lr ({lc (cr (".*"), p)})));
+
+    assert (regex_match (ls ({blank, blank, foo}),
+                         lr ({blank, '*', foo, blank, '*'})));
+
+    assert (regex_match (ls ({blank, blank, foo}), lr ({'.', '*'})));
+
+    assert (regex_match (ls ({blank, blank}),
+                         lr ({blank, '*', foo, '?', blank, '*'})));
+
+    assert (regex_match  (ls ({foo}),      lr ({foo, '{', '1', '}'})));
+    assert (regex_match  (ls ({foo, foo}), lr ({foo, '{', '1', ',', '}'})));
+
+    assert (regex_match  (ls ({foo, foo}),
+                          lr ({foo, '{', '1', ',', '2', '}'})));
+
+    assert (!regex_match (ls ({foo, foo}),
+                          lr ({foo, '{', '3', ',', '4', '}'})));
+
+    assert (regex_match  (ls ({foo}), lr ({'(', '?', '=', foo, ')', foo})));
+    assert (regex_match  (ls ({foo}), lr ({'(', '?', '!', bar, ')', foo})));
+  }
+}
-- 
cgit v1.1