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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 78d08d072565..38d403c9fade 100644
--- a/src/libexpr/lexer.l
+++ b/src/libexpr/lexer.l
@@ -76,7 +76,7 @@ inherit     { return INHERIT; }
 
 [ \t\n]+    /* eat up whitespace */
 \#[^\n]*    /* single-line comments */
-\/\*(.|\n)*\*\/  /* long comments */
+\/\*([^*]|\*[^\/])*\*\/  /* long comments */
 
 .           return yytext[0];