IDLE: search regex errors should be in/attached to search dialog

@terryjreedy

BPO	25178
Nosy	@terryjreedy, @roseman

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/terryjreedy'
closed_at = None
created_at = <Date 2015-09-19.18:34:41.281>
labels = ['expert-IDLE', 'type-bug', '3.9']
title = 'IDLE: search regex errors should be in/attached to search dialog'
updated_at = <Date 2020-01-07.22:19:44.085>
user = 'https://github.com/roseman'

bugs.python.org fields:

activity = <Date 2020-01-07.22:19:44.085>
actor = 'terry.reedy'
assignee = 'terry.reedy'
closed = False
closed_date = None
closer = None
components = ['IDLE']
creation = <Date 2015-09-19.18:34:41.281>
creator = 'markroseman'
dependencies = []
files = []
hgrepos = []
issue_num = 25178
keywords = []
message_count = 2.0
messages = ['251097', '359554']
nosy_count = 2.0
nosy_names = ['terry.reedy', 'markroseman']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue25178'
versions = ['Python 3.9']

Linked PRs

Follow-on to bpo-25173, any regex errors are displayed by SearchEngine but they should be shown by the dialog where the user is typing the error. Either as a modal tkMessageBox attached to the dialog, or as an inline error in the dialog itself.

I like the way that Open Module puts error messages in red under the entry box and allows users to correct without first clicking a modal message away. I would like to do the same here.

#157598 shows the error in red below the entry, as the Open Module dialog does, and moves the cursor to the offending character. It also fixes the "Whole word" option with a regular expression: a|b was anchored only on the outer sides, and a pattern ending with a backslash matched \b instead of being an error.

gh-69365: Show search pattern errors in the IDLE search dialogs (GH-1…

[3.13] gh-69365: Show search pattern errors in the IDLE search dialogs (

[3.14] gh-69365: Show search pattern errors in the IDLE search dialogs (

Looks like this introduced a refleak: https://buildbot.python.org/#/builders/2263/builds/275

@encukou

Thank you, @encukou. The leak is the variable trace that clears the error label — it was never removed, so it kept the whole dialog alive. #157754 fixes this.

gh-69365: Fix reference leak in IDLE search dialogs (GH-157754)

pythongh-69365: Fix reference leak in IDLE search dialogs (pythonGH-1…

For 3.15, refleak fix merged into the original on-hold backport.

[3.13] gh-69365: Fix reference leak in IDLE search dialogs (GH-157754) (

[3.14] gh-69365: Fix reference leak in IDLE search dialogs (GH-157754) (

[3.15] gh-69365: Show search pattern errors in the IDLE search dialogs (

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IDLE: search regex errors should be in/attached to search dialog #69365

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IDLE: search regex errors should be in/attached to search dialog #69365

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roseman commented on Sep 19, 2015

terryjreedy commented on Jan 7, 2020

serhiy-storchaka commented on Sep 15, 2026

encukou commented on Sep 18, 2026

serhiy-storchaka commented on Sep 18, 2026

terryjreedy commented on Sep 18, 2026

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