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
