Re: [External] : Getting text from next non-blank line

[Stephen Berman]

On Fri, 19 Apr 2024 23:00:30 +0000 Heime <heimeborgia@protonmail.com> wrote:

> On Saturday, April 20th, 2024 at 10:37 AM, Stephen Berman
> <stephen.berman@gmx.net> wrote:
>
>> On Fri, 19 Apr 2024 21:50:12 +0000 Heime heimeborgia@protonmail.com wrote:
>>
>> > Sent with Proton Mail secure email.
>> >
>> > On Saturday, April 20th, 2024 at 9:04 AM, Drew Adams drew.adams@oracle.com 
>> > wrote:
>> >
>> > > > This interactive function requests the user to input a string
>> > > > associated with the current line number. I want to change it so
>> > > > that the function picks out the text on the current line or the
>> > > > text of the next non-blank line. But also allow the user to write
>> > > > their own text for the line.
>> > >
>> > > ...
>> > >
>> > > > (interactive "sString: ")
>> > >
>> > > Don't use that, if you want to provide a
>> > > default value for the user input.
>> > >
>> > > Instead, use a function that accepts a
>> > > default value. E.g., `read-string' or` completing-read'.
>> > >
>> > > Read how to use `interactive' with a sexp as argument that returns the
>> > > list of args you want` interactive' to pass
>> > > to the function body.
>> > >
>> > > https://www.gnu.org/software/emacs/manual/html_node/elisp/Using-Interactive.html
>> >
>> > Have started with this to get the non-blank text. But still no way for
>> > use to use his own text.
>>
>> Follow Drew's advice, e.g. use read-string with your if-sexp as the
>> default value. (But what if the next line after a blank line is also
>> blank? And the string (thing-at-point 'line t) returns includes the
>> newline at the end of the line; do you want that?)
>>
>> Steve Berman
>
> If the next line after a blank line is also blank, I continue until
> I get to the first non-blank line.

What happens if the buffer ends in one or more blank lines?

> I have noticed the newline at the end of the line - I do not want that.
> Want to remove leading and trailing blanks as well.

string-trim

Steve Berman

> My latest version follows.
>
>
>  (defun tema-mark ()
>   "Store a string with the line number in `my-alist`.
> If the current line is blank, move to the next non-blank line."
>   (interactive)
>
>   (let* ((initial-line (thing-at-point 'line t))
>          (initial-line-number (line-number-at-pos))
>          (line (if (string-blank-p initial-line)
>                    (progn
>                      (forward-line)
>                      (while (string-blank-p (thing-at-point 'line t))
>                        (forward-line))
>                      (thing-at-point 'line t))
>                  initial-line))
>          (lnum (line-number-at-pos))
>          (text (read-string "Enter text to store: " line)))
>
>     (setq-local tema-lugar
>                  (append tema-lugar
>                           (list (cons text lnum)))) ))