GNU logs - #55331, boring messages

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Subject: bug#55331: Improved support for combining diacritics
Resent-From: Benson Muite <benson_muite@HIDDEN>
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Hi,

Unicode allows for combining diacritics. When using

grep -E "\s[a-z\`\'āáàēéèīíìịị̄ị́ị̀ōóòọọ̄ọọ́ọ̀ūúùụ̄ụ́ụ̀n̄ńǹm̄ḿm̀]{4}$"

to extract 4 letter Igbo words from a text, akụ̀ is incorrectly 
classified as a 4 letter word, when it is a three letter word.  Would a 
patch to fix this be accepted?

Regards,
Benson Muite

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Benson Muite <benson_muite@HIDDEN>
Subject: bug#55331: Acknowledgement (Improved support for combining
 diacritics)
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Subject: bug#55331: Improved support for combining diacritics
Resent-From: Paul Eggert <eggert@HIDDEN>
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On 5/8/22 23:38, Benson Muite wrote:
> When using
>=20
> grep -E "\s[a-z\`\'a=CC=84a=CC=81a=CC=80e=CC=84e=CC=81e=CC=80i=CC=84i=CC=
=81i=CC=80i=CC=A3i=CC=A3=CC=84i=CC=A3=CC=81i=CC=A3=CC=80o=CC=84o=CC=81o=CC=
=80=E1=BB=8D=E1=BB=8D=CC=84=E1=BB=8D=E1=BB=8D=CC=81=E1=BB=8D=CC=80u=CC=84=
u=CC=81u=CC=80u=CC=A3=CC=84=E1=BB=A5=CC=81=E1=BB=A5=CC=80n=CC=84n=CC=81n=CC=
=80m=CC=84m=CC=81m=CC=80]{4}$"
>=20
> to extract 4 letter Igbo words

The {4} means "4 characters", not "4 letters", and a combining character=20
counts as a character.

It might be nice for 'grep' to have ways to perform Unicode=20
normalization before matching. In the meantime perhaps you can get what=20
you want by normalizing the text before running it through 'grep'.

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Subject: bug#55331: Improved support for combining diacritics
Resent-From: Benson Muite <benson_muite@HIDDEN>
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Date: Mon, 9 May 2022 21:44:17 +0300
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On 5/9/22 21:30, Paul Eggert wrote:
> On 5/8/22 23:38, Benson Muite wrote:
> 
> It might be nice for 'grep' to have ways to perform Unicode 
> normalization before matching. In the meantime perhaps you can get what 
> you want by normalizing the text before running it through 'grep'.
Thanks for the advice. uconv should work.

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severity 55331 wishlist

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