From: Jean Louis <bugs@gnu.support>
To: tomas@tuxteam.de
Cc: help-gnu-emacs@gnu.org
Subject: Re: How to grep for a string spanning multiple lines?
Date: Sat, 26 Nov 2022 11:43:47 +0300 [thread overview]
Message-ID: <Y4HRw4S5Q2cMsAIe@protected.localdomain> (raw)
In-Reply-To: <Y4HP9h7FEstF0DSt@tuxteam.de>
* tomas@tuxteam.de <tomas@tuxteam.de> [2022-11-26 11:37]:
> Note that, at least, in Emacs, the POSIX character class [:space:]
> also matches line breaks. So if you always use [[:space:]]+ to
> separate your words, you might find what you are looking for.
Just that for some reason it does not work as expected:
(string-match "[[:space:]]+" "Hello\nthere") ➜ nil
(string-match "[[:space:]]+" "Hello
there") ➜ nil
(xr "[[:space:]]+") ➜ (one-or-more space)
(rx (one-or-more space)) ➜ "[[:space:]]+"
That is why I had to make this:
(defun rcd-string-clean-whitespace (s)
"Return trimmed string S after cleaning whitespaces."
(replace-regexp-in-string
(rx (one-or-more (or "\n" (any whitespace))))
" "
(string-trim s)))
as then it works as expected:
(rcd-string-clean-whitespace "Hello\nthere") ➜ "Hello there"
Because "[[:space:]]+" does not include "\n" that I know:
(replace-regexp-in-string "[[:space:]]+" " " "Hello\nthere") ➜ "Hello
there"
--
Jean
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next prev parent reply other threads:[~2022-11-26 8:43 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-26 6:42 How to grep for a string spanning multiple lines? Marcin Borkowski
2022-11-26 8:27 ` Jean Louis
2022-11-26 8:36 ` tomas
2022-11-26 8:43 ` Jean Louis [this message]
2022-11-26 8:59 ` Eli Zaretskii
2022-11-26 9:06 ` Jean Louis
2022-11-27 7:31 ` Michael Heerdegen
2022-11-27 7:44 ` Jean Louis
2022-11-27 12:04 ` Michael Heerdegen
2022-11-27 18:25 ` Jean Louis
2022-11-26 10:57 ` Arthur Miller
2022-11-26 14:55 ` Emanuel Berg
2022-11-27 6:54 ` Marcin Borkowski
2022-11-27 7:26 ` Jean Louis
2022-11-27 13:48 ` Emanuel Berg
2022-11-27 18:10 ` tomas
2022-11-27 19:04 ` Emanuel Berg
2022-11-27 19:46 ` [External] : " Drew Adams
2022-11-28 5:07 ` tomas
2022-11-28 6:17 ` Drew Adams
2022-11-29 2:00 ` Emanuel Berg
2022-11-28 21:05 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-11-28 21:12 ` Emanuel Berg
2022-11-28 21:17 ` Emanuel Berg
2022-12-04 21:55 ` Rudolf Adamkovič
2022-12-05 23:06 ` Emanuel Berg
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