From: Heime <heimeborgia@protonmail.com>
To: Pierre Rouleau <prouleau001@gmail.com>
Cc: Heime via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
Subject: Re: Getting substring
Date: Thu, 17 Aug 2023 03:16:08 +0000 [thread overview]
Message-ID: <3Ib3MaXSJe_ADwtMJwdXW7srSPXc8MY12cMtwL48iSjE6QV010b8LWdO_uToUBzF-dqjEje0HzPXKEP9cAJzjvh54V-RA1YQoVNf01wVW5k=@protonmail.com> (raw)
In-Reply-To: <CALTqLibAZpyS-W-DZY_iO4ztwc53pMR6MXw=3Zet_UAsS_oXBw@mail.gmail.com>
Sent with Proton Mail secure email.
------- Original Message -------
On Thursday, August 17th, 2023 at 3:07 PM, Pierre Rouleau <prouleau001@gmail.com> wrote:
> Heime,
>
> I think you need to learn a little bit of Emacs Lisp, or Lisp. Read a book
> on Lisp to get you going. Asking questions like you do won't help you
> much. You first need to understand LIsp and the way it deals with
> functions, the concepts.
>
> LISPcraft from Robert Wilensky is old (1984) but small and it covers the
> basics which apply to Emacs Lisp. It's a nice read and the book is
> relatively small.
The error message (wrong-type-argument listp "bigoplus"), suggests that the code
expects a list argument but is receiving a string instead.
Doing C-h f pcase says
(pcase EXP &rest CASES)
Evaluate EXP to get EXPVAL; try passing control to one of CASES.
Does not specify whether EXP is a string or whatever.
> On Wed, Aug 16, 2023 at 11:01 PM Heime heimeborgia@protonmail.com wrote:
>
> > Sent with Proton Mail secure email.
> >
> > ------- Original Message -------
> > On Thursday, August 17th, 2023 at 2:52 PM, Heime <
> > heimeborgia@protonmail.com> wrote:
> >
> > > Sent with Proton Mail secure email.
> > >
> > > ------- Original Message -------
> > > On Thursday, August 17th, 2023 at 2:33 PM, Pierre Rouleau
> > > prouleau001@gmail.com wrote:
> > >
> > > > I mean,
> > > > Executing :
> > > >
> > > > > (setq str "bigoplus ⨁︁")
> > > > > (message "%s TEST: " (car (split-string str)))
> > > >
> > > > prints bigoplus.
> > > >
> > > > but
> > > >
> > > > (message "%s TEST: " (car (split-string grafm)))
> > > >
> > > > will depend of what grafm holds.
> > > >
> > > > On Wed, Aug 16, 2023 at 10:30 PM Pierre Rouleau prouleau001@gmail.com
> > > >
> > > > wrote:
> > > >
> > > > > 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.
> >
> > Have started to wonder whether the following is wrong to do
> >
> > (setq grafm "bigoplus ⨁︁")
> > (pcase (car (split-string grafm))
> > "bigoplus" ("Detected bigoplus"))
> >
> > It is not a string.
>
>
> --
> /Pierre
next prev parent reply other threads:[~2023-08-17 3:16 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 [this message]
2023-08-17 12:37 ` Pierre Rouleau
2023-08-17 3:01 ` Pierre Rouleau
2023-08-19 22:31 ` Emanuel Berg
2023-08-25 7:39 ` Philip Kaludercic
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='3Ib3MaXSJe_ADwtMJwdXW7srSPXc8MY12cMtwL48iSjE6QV010b8LWdO_uToUBzF-dqjEje0HzPXKEP9cAJzjvh54V-RA1YQoVNf01wVW5k=@protonmail.com' \
--to=heimeborgia@protonmail.com \
--cc=help-gnu-emacs@gnu.org \
--cc=prouleau001@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).