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bug#44983: Truncate long lines of grep output
From: |
Juri Linkov |
Subject: |
bug#44983: Truncate long lines of grep output |
Date: |
Sat, 05 Dec 2020 21:47:06 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) |
>> I suggested to request the equivalent of "cut -c" to be a feature
>> added to Grep.
>>
>> Failing that, I don't think Emacs should do something like that,
>> especially since 'cut' is not guaranteed to be available. Users who
>> have such problems can, of course, modify the Grep command to do that.
>
> Finally I solved the long-standing problem by customizing
> grep-find-template to
>
> "find <D> <X> -type f <F> -print0 | sort -z | xargs -0 -e grep <C>
> --color=always -inH -e <R> | cut -c -200"
I noticed the problems caused by "cut -c": it counts bytes,
not multi-byte characters. Even though it documentation says
that -b selects bytes, and -c selects characters, still
when used with "cut -c -200" it selects bytes, not UTF characters.
Often it cuts in the middle of a multi-byte UTF-8 character,
so octal codes are displayed at the end of grep lines.
This is like the character limit for a SMS message is 160 characters,
whereas actually this means not characters, but bytes, because
on an UTF text the SMS limit is only 70 characters.
- bug#44983: Truncate long lines of grep output, (continued)
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/01
- bug#44983: Truncate long lines of grep output, Eli Zaretskii, 2020/12/01
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/02
- bug#44983: Truncate long lines of grep output, Eli Zaretskii, 2020/12/02
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/02
- bug#44983: Truncate long lines of grep output, Eli Zaretskii, 2020/12/03
- bug#44983: Truncate long lines of grep output, Rudolf Schlatte, 2020/12/03
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/03
- bug#44983: Truncate long lines of grep output,
Juri Linkov <=
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/06
- bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2020/12/06
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/06
- bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2020/12/06
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/08
- bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2020/12/08
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/09
- bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2020/12/09
- bug#44983: Truncate long lines of grep output, Juri Linkov, 2020/12/10
- bug#44983: Truncate long lines of grep output, Dmitry Gutov, 2020/12/10