From 7a2f5753a12a68e87f8556f6e833710f147533b2 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 9 Sep 2015 14:10:24 +0200
Subject: Add support for evaluation context

For now it acts as just the value mode that can be enabled anywhere
variable expansion is supported, for example:

(foo=bar):

And the primary use currently is to enable/test quoted and indirect
variable expansion:

"foo bar" = FOO BAR
print $"foo bar"    # Invalid.
print $("foo bar")  # Yeah, baby.

foo = FOO
FOO = foo
print $($foo)

Not that you should do something like this...
---
 tests/quote/buildfile | 10 ++++++++++
 tests/quote/test.out  |  6 ++++++
 2 files changed, 16 insertions(+)

(limited to 'tests/quote')

diff --git a/tests/quote/buildfile b/tests/quote/buildfile
index 6dd22b4..19c2bfc 100644
--- a/tests/quote/buildfile
+++ b/tests/quote/buildfile
@@ -19,4 +19,14 @@ print $foo'bar'
 print $foo"$bar"
 print "$foo"bar
 
+# Quoting and evaluation context.
+#
+print ("x{foo bar}")
+#print "(x{foo bar})" # multiple values in concatenating context expansion
+print "({foo})"
+print "('foo bar')"
+print "("foo bar")"
+print "("$foo bar")"
+print "("$foo ($bar)")"
+
 ./:
diff --git a/tests/quote/test.out b/tests/quote/test.out
index 216b1c8..f5d7a71 100644
--- a/tests/quote/test.out
+++ b/tests/quote/test.out
@@ -12,3 +12,9 @@ fo o bar
 fo obar
 fo o bar 
 fo obar
+x{foo bar}
+foo
+foo bar
+foo bar
+fo o bar
+fo o  bar 
-- 
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