Caio and Arron:
I am writing this at the top to start over and answer Caio's questions.
Say you have an accidental string name "A..." and the stem is up; then
the same accidental with the stem down would be named "-A...". "A"..
would be a short string like LilyPond uses for accidentals.
If you want to use the accidental more than one time say 2 then write the
strings like this, "A...x2" and "-A...x2". But the second name is wrong,
the "x2" part needs to go with the stem. "A...x2" is the logical entry
but the "x" needs to be replaced with "-x". Before I do this I need a
space before the "x", i replace "x",, if it exists with " x" if it
exists. I now have the 4 possibilities "A...", "-A...", "A... x2",
"-A... x2".
My question is, is there a procedure that sees the [-] then searches for
"x" and replaces it with "-x".
I could add the "-" to the "x" at entry but want to keep it simple, x
(times ) 2 is logical (and saves a stroke). The next step would be to
split the strings into two strings if a space exists. So "A... x2"
becomes "A..." " x2" and "-A... x2" becomes "-A..." "-x2" ; two glyph
each to form ligatures.
Thank you, ƒg
On Mon, Jun 8, 2020 at 4:31 PM Aaron Hill <lilyp...@hillvisions.com> wrote:
> On 2020-06-08 12:47 pm, Caio Barros wrote:
> > Hello!
> >
> > Em seg., 8 de jun. de 2020 às 08:37, Freeman Gilmore <
> > freeman.gilm...@gmail.com> escreveu:
> >
> >> If the string is "A ... B ... " , using Regexp Functions is it
> >> possible, if 'A' matches [-] then 'B' would be replaced by "C"? 'A'
> >> is first in the string. Position of B is not constant.and may not be
> >> there.
> >>
> >
> > Can you provide a little more context of what you are trying to do and
> > what
> > this has to to with lilypond? What tools are you using to find and
> > replace
> > strings using regex?
>
> LilyPond -> Guile -> (use-modules (ice-9 regex))
>
> Or I could be making the wrong assumption here. ¯\_(ツ)_/¯
>
> ;;;;
> (display
> (regexp-substitute/global #f
> (make-regexp "(^A.*)B" regexp/newline)
> (string-join '("A ... B ..." "D ... B ..."
> "A ... E ..." "A ... B ...")
> "\n" 'suffix)
> 'pre 1 "C" 'post))
> ;;;;
>
> ====
> A ... C ...
> D ... B ...
> A ... E ...
> A ... C ...
> ====
>
> The key here is to use a capturing group for the portion of the string
> before "B" that you need to preserve in the substitution.
>
>
> -- Aaron Hill
>
>
