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fix: stop deleting user text that looks like a skill mention (#29051)

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Any `<$...>` run in a chat message was treated as an inline skill mention and removed before the request reached the model, so text like `<$(=MonthStart($(vMaxMonthEndINC)))"}, [Registration day] >` silently vanished mid-message and the model only saw the part before it.

The mention regexes accepted any character except `|` and `>` as the skill id, so they matched far more than real mentions. Skill ids are already validated as `[a-z0-9_-]+` when a skill is created, so both regexes now require that charset. Ordinary text passes through untouched while `<$id>`, `<$id|Label>` and `</id|Label>` still resolve and strip as before.

Verified against the reported message (now preserved verbatim) and the three mention forms.

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Classic298
2026-08-27 22:44:33 +02:00
committed by GitHub
parent f7db201ff5
commit 0afe69e1a7
1 changed files with 3 additions and 2 deletions
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5
backend/open_webui/utils/middleware.py
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@@ -2265,7 +2265,8 @@ def sanitize_tool_pairs(messages: list[dict]) -> list[dict]:
return sanitized
SKILL_MENTION_RE = re.compile(r'<(?:\$([^|>]+)(?:\|[^>]*)?|/([^|>]+)\|[^>]*)>')
# Ids are validated as [a-z0-9_-]+ on create; matching that keeps ordinary "<$..." text intact.
SKILL_MENTION_RE = re.compile(r'<(?:\$([a-z0-9_-]+)(?:\|[^>]*)?|/([a-z0-9_-]+)\|[^>]*)>')
def _get_text_parts(message: dict) -> list[str]:
@@ -2287,7 +2288,7 @@ def extract_skill_ids_from_messages(messages: list[dict]) -> set[str]:
return ids
SKILL_MENTION_STRIP_RE = re.compile(r'<(?:\$[^|>]+(?:\|([^>]*))?|/[^|>]+\|([^>]*))>')
SKILL_MENTION_STRIP_RE = re.compile(r'<(?:\$[a-z0-9_-]+(?:\|([^>]*))?|/[a-z0-9_-]+\|([^>]*))>')
def strip_skill_mentions(messages: list[dict]) -> None: