From: Pierre Rouleau <prouleau001@gmail.com>
To: Heime <heimeborgia@protonmail.com>
Cc: Heime via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
Subject: Re: Getting substring
Date: Wed, 16 Aug 2023 23:01:52 -0400 [thread overview]
Message-ID: <CALTqLiZ+Ea+-mDSKFuWVwdF+6E7u9mqdax16v6sQScUc_whasg@mail.gmail.com> (raw)
In-Reply-To: <JBHGXsXQ5FqyiIfSLYjsyYBIW0g4arOvptPrCd_a9nfkwT6tlqs-KlNy93iAZYsPIOn5BIt7O0hau3jNhP7hqHS6SkVO41-Fno3JsaMttP8=@protonmail.com>
> > Why does the following not print the first word?
> > >
> > > > (message "%s TEST: " (car (split-string grafm)))
> > >
> > > Are you sure it does not print it? It prints bigoplus for me.
> > > You can also look into the 'Message' buffer to see what was printed by
> > > the message function. - Pierre
>
> I now realise my mistake of putting "%s" before "TEST". I was thus doing
> things
> correctly after all.
>
> The command (car (split-string grafm)) also works if there are no spaces in
> 'grafm', it still returns the string as a first element in the list result.
>
> Not sure I follow you...
- You do understand that message is just a string formatting function that
takes arguments to put in places identified by the '%s', right?
- And that format does something similar but just returns the formatted
string.
- therefore you can use ielm to test your code (use it!):
Here's a session:
ELISP> (setq str "bigoplus ⨁︁")
"bigoplus ⨁︁"
ELISP> (car (split-string str))
"bigoplus"
ELISP> (format " 123-- %s -- " (car (split-string str)))
" 123-- bigoplus -- "
ELISP> (format "%s TEST" (car (split-string str)))
"bigoplus TEST"
ELISP> (format "Survey says: %s " (car (split-string str)))
"Survey says: bigoplus "
ELISP>
--
/Pierre
next prev parent reply other threads:[~2023-08-17 3:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-16 9:26 Getting substring Heime
2023-08-16 13:18 ` Heime
2023-08-17 2:23 ` Heime
2023-08-17 2:30 ` Pierre Rouleau
2023-08-17 2:33 ` Pierre Rouleau
2023-08-17 2:52 ` Heime
2023-08-17 3:01 ` Heime
2023-08-17 3:07 ` Pierre Rouleau
2023-08-17 3:16 ` Heime
2023-08-17 12:37 ` Pierre Rouleau
2023-08-17 3:01 ` Pierre Rouleau [this message]
2023-08-19 22:31 ` Emanuel Berg
2023-08-25 7:39 ` Philip Kaludercic
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