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chore: deprecate String.toSubstring#11232

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TwoFX:markus/tosubstring
Nov 18, 2025
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chore: deprecate String.toSubstring#11232
TwoFX merged 2 commits intoleanprover:masterfrom
TwoFX:markus/tosubstring

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@TwoFX TwoFX commented Nov 18, 2025

This PR deprecates String.toSubstring in favor of String.toRawSubstring (cf. #11154).

@TwoFX TwoFX requested a review from kim-em as a code owner November 18, 2025 08:59
@TwoFX TwoFX added the changelog-library Library label Nov 18, 2025
@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Nov 18, 2025
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Reference manual CI status:

  • ❗ Reference manual CI can not be attempted yet, as the nightly-testing-2025-11-17 tag does not exist there yet. We will retry when you push more commits. If you rebase your branch onto nightly-with-manual, reference manual CI should run now. You can force reference manual CI using the force-manual-ci label. (2025-11-18 10:07:06)

ghost pushed a commit to leanprover-community/batteries that referenced this pull request Nov 18, 2025
ghost pushed a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Nov 18, 2025
@ghost ghost added the breaks-mathlib This is not necessarily a blocker for merging: but there needs to be a plan label Nov 18, 2025
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ghost commented Nov 18, 2025

Mathlib CI status (docs):

ghost pushed a commit to leanprover-community/batteries that referenced this pull request Nov 18, 2025
ghost pushed a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Nov 18, 2025
@TwoFX TwoFX added this pull request to the merge queue Nov 18, 2025
Merged via the queue into leanprover:master with commit 03eb2f7 Nov 18, 2025
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kim-em added a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Nov 23, 2025
* Update lean-toolchain for testing leanprover/lean4#11232

* A few fixes

* Update lean-toolchain for leanprover/lean4#11232

* Update lean-toolchain for testing leanprover/lean4#11180

* lake update

* Fix

* Fixed Cli

* Fix cache and tests

* chore: bump to nightly-2025-11-19

* lake update

* deprecations

* fix merge

* lake update proofwidgets

* lake update aesop

* some `grind +revert`

* chore: bump to nightly-2025-11-20

* lake update batteries

* grind +revert

* chore: adaptations for nightly-2025-11-20

* add grind regression test

* chore: bump to nightly-2025-11-21

* chore: adaptations for nightly-2025-11-21

* lake update

---------

Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Markus Himmel <markus@lean-fro.org>
Co-authored-by: Kim Morrison <kim@tqft.net>
Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: mathlib4-bot <github-mathlib4-bot@leanprover.zulipchat.com>
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