regex not matching due to repeated capturing group rather than capturing a repeated group

Question

I have the following regexp:

/(?:[\\[\\{]*)(?:([A-G\\-][^A-G\\]\\}]*)+)(?:[\\]\\}]*)/

with the following expression:

{A\'\'         


        

Answer 1

You can get it with this pattern with preg_match_all at the item 0:

~
(?:
    \G (?!\A) # contiguous to previous match, but not at the start of the string
  |
    { (?=[^}]* }) # start with { and check if a closing bracket follows 
  |
    \[ (?=[^]]* ]) # the same for square bracket
)
\K # start the match result here
[A-G] [^]A-G}]* 
~xS

demo