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-rw-r--r--tools/libxl/libxlu_cfg_l.l2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/libxl/libxlu_cfg_l.l b/tools/libxl/libxlu_cfg_l.l
index efac88435f..d5241e10f4 100644
--- a/tools/libxl/libxlu_cfg_l.l
+++ b/tools/libxl/libxlu_cfg_l.l
@@ -52,7 +52,7 @@ void xlu__cfg_yyset_column(int column_no, yyscan_t yyscanner);
%%
-[a-z][_0-9a-z]* {
+[a-z][._0-9a-z]* {
yylval->string= xlu__cfgl_strdup(ctx,yytext);
GOT(IDENT);
}