lib9p: idl.gen: Fix syntax error messages when the line has a tab

1 files changed, 3 insertions, 1 deletions

diff --git a/lib9p/idl.gen b/lib9p/idl.gen
index af70097..65ff734 100755
--- a/lib9p/idl.gen
+++ b/lib9p/idl.gen
@@ -1420,8 +1420,10 @@ def main() -> None:
             )
             assert e.text
             print(f"\t{e.text}", file=sys.stderr)
+            text_suffix = e.text.lstrip()
+            text_prefix = e.text[: -len(text_suffix)]
             print(
-                f"\t{ANSIColors.RED}{'~'*len(e.text)}{ANSIColors.RESET}",
+                f"\t{text_prefix}{ANSIColors.RED}{'~'*len(text_suffix)}{ANSIColors.RESET}",
                 file=sys.stderr,
             )
             sys.exit(2)