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-rw-r--r--lib/lexer.mll2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/lexer.mll b/lib/lexer.mll
index e2f6469..b4e26d8 100644
--- a/lib/lexer.mll
+++ b/lib/lexer.mll
@@ -11,7 +11,7 @@ let float = digit* frac? exp?
let int = digit+
let white = [' ' '\t']+
let newline = '\r' | '\n' | "\r\n"
-let id = ['a'-'z' 'A'-'Z' '-']*
+let id = ['a'-'z' 'A'-'Z' '-' '_']*
let newline = '\r' | '\n' | "\r\n"
let many_newline = newline+