Recognize quoting of first character in token

Use this to relax the pattern inclusion/exclusion syntax to only require
unquoted +/-.

1 files changed, 24 insertions, 6 deletions

diff --git a/libbuild2/lexer+quoting.test.testscript b/libbuild2/lexer+quoting.test.testscript
index 0143c90..ddfb0d0 100644
--- a/libbuild2/lexer+quoting.test.testscript
+++ b/libbuild2/lexer+quoting.test.testscript
@@ -56,9 +56,9 @@ EOO
     : Token start already quoted
     :
     $* <'"$foo"' >>EOO
-    '' [D/P]
+    '' [D/P/F]
     $ [D/C]
-    'foo' [D/P]
+    'foo' [D/P/F]
     <newline>
     EOO
 
@@ -66,7 +66,7 @@ EOO
     : Token end still quoted
     :
     $* <'"foo$"' >>EOO
-    'foo' [D/P]
+    'foo' [D/P/F]
     $ [D/C]
     '' [D/P]
     <newline>
@@ -87,7 +87,7 @@ EOO
     : Token continous with unquoted character
     :
     $* <'"fo"o' >>EOO
-    'foo' [D/P]
+    'foo' [D/P/F]
     <newline>
     EOO
 
@@ -95,7 +95,7 @@ EOO
     : Token continous with unquoted escaped character
     :
     $* <'"fo"\"' >>EOO
-    'fo"' [D/P]
+    'fo"' [D/P/F]
     <newline>
     EOO
   }
@@ -104,6 +104,24 @@ EOO
 : mixed
 :
 $* <"\"fo\"'o'" >>EOO
-'foo' [M/P]
+'foo' [M/P/F]
 <newline>
 EOO
+
+: first
+:
+{
+  : empty-single
+  :
+  $* <"''+foo" >>EOO
+  '+foo' [S/P/F]
+  <newline>
+  EOO
+
+  : empty-double
+  :
+  $* <'""+foo' >>EOO
+  '+foo' [D/P/F]
+  <newline>
+  EOO
+}