Description

Locked-chess-official

opened on Oct 8, 2025

Issue body actions

Bug report

Bug description:

In 3.14, the t-string is supported, but the IDLE still hardcodes the string prefix pattern (r, u, b, f, rb, br, fr, rf),
but does not delegate to the standard tokenize module.

The question of the hardcodes cannot fix quickly. However, change the code in make_pat here can fix the question above:

stringprefix = r"(?i:r|u|f|t|fr|rf|b|br|rb|rt|tr)?"

If there are more supported combinations we can add them.

CPython versions tested on:

3.14

Operating systems tested on:

No response

Linked PRs

• [3.14]gh-139742: support t-string colorization in IDLE #139747
• gh-139742: colorize t-strings in IDLE #139754
• gh-139742: Add support for Python 3.14 t-string prefixes in IDLE colorizer and tests #139756
• [3.13] gh-139742: Add support for Python 3.14 t-string prefixes in IDLE colorizer and tests (GH-139756) #139830
• [3.14] gh-139742: Add support for Python 3.14 t-string prefixes in IDLE colorizer and tests (GH-139756) #139831

Activity

1. Locked-chess-official

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Oct 8, 2025
2. Anuradha-Agrawal-07 commented on Oct 8, 2025

   

   Anuradha-Agrawal-07

   on Oct 8, 2025

   Contributor

   More actions

   Thank you for detailing both the issue and the proposed fix! Are you planning to submit a pull request for this, or is it open for others to work on? I’d like to help if the opportunity is available.
3. StanFromIreland

   changed the title [-]Forget "t" supported in idlelib/colorizer.py[/-] [+]IDLE does not color t-string prefix[/+] on Oct 8, 2025
4. StanFromIreland

   added

   type-featureA feature request or enhancementA feature request or enhancement

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   topic-IDLE

   and removed

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Oct 8, 2025
5. StanFromIreland

   added this to IDLE Issueson Oct 8, 2025
6. terryjreedy

   changed the title [-]IDLE does not color t-string prefix[/-] [+]IDLE - support t-string prefix in colorizer[/+] on Oct 8, 2025
7. terryjreedy commented on Oct 8, 2025

   

   terryjreedy

   on Oct 8, 2025

   Member

   More actions

   Initial PR patches must be against main branch unless main should not be changed (rare).

   Insert 't' blocks based on and parallel to 'f' blocks. In colorizer.py:
   stringprefix = r"(?i:r|u|f|fr|rf|t|tr|rt|b|br|rb)?"

   The 'source' definition in idlelib/idle_test/test_colorizer.py has these two lines.

       r'x', u'x', R'x', U'x', f'x', F'x'
       fr'x', Fr'x', fR'x', FR'x', rf'x', rF'x', Rf'x', RF'x'
   

   Add 2 't' entries at the end of the first line and a 't' line after the second, 'f', line.

   Blurb: "Colorize t-string prefixes, as done with f-string prefixes."
8. Locked-chess-official commented on Oct 8, 2025

   

   Locked-chess-official

   on Oct 8, 2025

   ContributorAuthor

   More actions

   The change for the "test_colorizer.py" seems to be difficult. Only adding the line will cause the full test fail. Maybe it need the exactly line and offset for the new test source.
9. terryjreedy

   added a commit that references this issue on Oct 9, 2025

   gh-139742: Add support for Python 3.14 t-string prefixes in IDLE colo…

   6fd1418
10. miss-islington

    added 2 commits that reference this issue on Oct 9, 2025

    pythongh-139742: Add support for Python 3.14 t-string prefixes in IDL…

    7e482cb

    pythongh-139742: Add support for Python 3.14 t-string prefixes in IDL…

    2c7952b
11. terryjreedy

    added a commit that references this issue on Oct 9, 2025

    [3.14] gh-139742: Add support for Python 3.14 t-string prefixes in ID…

    342b644
12. picnixz

    closed this as completedon Oct 9, 2025
13. github-project-automation

    moved this to Done in IDLE Issueson Oct 9, 2025

Issue actions