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-rw-r--r--src/urweb.lex2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/urweb.lex b/src/urweb.lex
index eada3611..f32ddf1e 100644
--- a/src/urweb.lex
+++ b/src/urweb.lex
@@ -178,7 +178,7 @@ fun unescape loc s =
id = [a-z_][A-Za-z0-9_']*;
xmlid = [A-Za-z][A-Za-z0-9_-]*;
-cid = [A-Z][A-Za-z0-9_]*;
+cid = [A-Z][A-Za-z0-9_']*;
ws = [\ \t\012\r];
intconst = [0-9]+;
realconst = [0-9]+\.[0-9]*;