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Speed up replacen loop #930

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merged 2 commits into from Nov 28, 2022
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@xkr47 xkr47 commented Nov 28, 2022

replacen() (and therefore also replace()) was postponing checking against the limit until next iteration, which causes it to unnecessarily execute a "find" one extra time after the limit has been reached.

Also added two unit tests for replacen() since there were none.

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Nice find!

@BurntSushi BurntSushi merged commit ac2d0e1 into rust-lang:master Nov 28, 2022
crapStone added a commit to Calciumdibromid/CaBr2 that referenced this pull request Jan 10, 2023
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [regex](https://github.com/rust-lang/regex) | dependencies | patch | `1.7.0` -> `1.7.1` |

---

### Release Notes

<details>
<summary>rust-lang/regex</summary>

### [`v1.7.1`](https://github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#&#8203;171-2023-01-09)

[Compare Source](rust-lang/regex@1.7.0...1.7.1)

\==================
This release was done principally to try and fix the doc.rs rendering for the
regex crate.

Performance improvements:

-   [PERF #&#8203;930](rust-lang/regex#930):
    Optimize `replacen`. This also applies to `replace`, but not `replace_all`.

Bug fixes:

-   [BUG #&#8203;945](rust-lang/regex#945):
    Maybe fix rustdoc rendering by just bumping a new release?

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNC45NC4wIiwidXBkYXRlZEluVmVyIjoiMzQuOTQuMCJ9-->

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Co-authored-by: crapStone <crapstone01@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1711
Reviewed-by: crapStone <crapstone@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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