fix replaceRegexpAll bug

[Joeywzr]

Changelog category (leave one):

• Bug Fix (user-visible misbehaviour in official stable or prestable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
fix replaceRegexpAll bug

Detailed description / Documentation draft:
#30245

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[den-crane]

I would add test for replaceRegexpAll as well. One day trim can be reworked without using Regex. Then your test will stop to check replaceRegexpAll.

[Joeywzr]

I would add test for replaceRegexpAll as well. One day trim can be reworked with using Regex. Then your test will stop to check replaceRegexpAll.

OK.

[vdimir]

Great catch!

[alexey-milovidov]

@vdimir

fix replaceRegexpAll bug

This is not a good changelog entry.