python-pyparsing/limit-error-messages.patch
2023-07-12 08:26:26 +00:00

24 lines
919 B
Diff

From e0826a2ec69bc3cf71ba7ca7945774d9213d7d5e Mon Sep 17 00:00:00 2001
From: Kyle Sunden <git@ksunden.space>
Date: Wed, 5 Jul 2023 14:16:50 -0500
Subject: [PATCH] Limit error message overriding when
---
pyparsing/core.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/pyparsing/core.py b/pyparsing/core.py
index 8233f72c..bfbb391c 100644
--- a/pyparsing/core.py
+++ b/pyparsing/core.py
@@ -4547,7 +4547,8 @@ def parseImpl(self, instring, loc, doActions=True):
try:
return self.expr._parse(instring, loc, doActions, callPreParse=False)
except ParseBaseException as pbe:
- pbe.msg = self.errmsg
+ if not isinstance(self, Forward) or self.customName is not None:
+ pbe.msg = self.errmsg
raise
else:
raise ParseException(instring, loc, "No expression defined", self)