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bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.e
From: |
Gregory Heytings |
Subject: |
bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el |
Date: |
Wed, 03 Mar 2021 20:34:46 +0000 |
OK, so we get the byte offset, but not the length of the match (which
we'll also need later, for purposes such as highlighting and
replacement). And what happens if there are several matches on the
same line? We need columns for all of them.
I don't know exactly what you want to do, I initially chimed in this
conversation to react to Juri's "GNU grep has no option to truncate
output", to mention that GNU grep does have an option to do this;
perhaps it doesn't do exactly what you want.
By an option I meant a command line switch of GNU grep, not something
that looks like a hack.
It's not a hack at all, it's a command line switch: -o. The amount of
context, which defaults to zero, is given in the regexp instead of as an
argument to the command line switch.
This -o option has been present since GNU grep 2.5, twenty years ago.
You can use it together with other options:
grep -o PATTERN FILE prints the matches
grep -no PATTERN FILE prints the matches and their line number
grep -bo PATTERN FILE prints the matches and their offset
grep -bo '.\{0,BEFORE\}PATTERN.\{0,AFTER\}' FILE prints the matches with a
given BEFORE and AFTER context
and so forth.
And the -o option is supported by ripgrep, ag and ack, with almost the
same syntax.
It's perhaps not what you want, but at least to me it seems more powerful
than ripgrep's -M option.
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, (continued)
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Dmitry Gutov, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Dmitry Gutov, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Dmitry Gutov, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Dmitry Gutov, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Juri Linkov, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el,
Gregory Heytings <=
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Eli Zaretskii, 2021/03/03
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Eli Zaretskii, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Eli Zaretskii, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Eli Zaretskii, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Gregory Heytings, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Eli Zaretskii, 2021/03/04
- bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el, Dmitry Gutov, 2021/03/06