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-rw-r--r--src/libexpr/lexer.l2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/lexer.l b/src/libexpr/lexer.l
index d46b66d9ff7c..b61d5ea7713c 100644
--- a/src/libexpr/lexer.l
+++ b/src/libexpr/lexer.l
@@ -78,7 +78,7 @@ static Expr * unescapeStr(SymbolTable & symbols, const char * s)
 %}
 
 
-ID          [a-zA-Z\_][a-zA-Z0-9\_\']*
+ID          [a-zA-Z\_][a-zA-Z0-9\_\'\-]*
 INT         [0-9]+
 PATH        [a-zA-Z0-9\.\_\-\+]*(\/[a-zA-Z0-9\.\_\-\+]+)+
 SPATH       \<[a-zA-Z0-9\.\_\-\+]+(\/[a-zA-Z0-9\.\_\-\+]+)*\>