From 7276e194eefc807600e1dcd10566a57e557ed1ad Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Mon, 1 May 2006 15:29:46 +0000
Subject: [PATCH] * Disallow unescaped $ in string literals.

---
 src/libexpr/lexer.l | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/libexpr/lexer.l b/src/libexpr/lexer.l
index 47f2bca1e..bc9a38da4 100644
--- a/src/libexpr/lexer.l
+++ b/src/libexpr/lexer.l
@@ -73,10 +73,7 @@ inherit     { return INHERIT; }
             }
 
 \"          { BEGIN(STRING); return '"'; }
-<STRING>([^\$\"\\]|\\.|\$[^\{\$])+ {
-/* Note: a dollar *is* allowed as-is in a string, as long as it's
-   not followed by a open brace.  This should probably be disallowed
-   eventually. */
+<STRING>([^\$\"\\]|\\.)+ {
               yylval->t = unescapeStr(yytext); /* !!! alloc */ 
               return STR;
             }