regex101: PCRE2 (PHP) Match Workspace

Regular Expression

@cartouche[^@]+@smallexample(.*?)@end smallexample[^@]+@end cartouche

@cartouche
@smallexample
# file: quote.cfg
quote = "Criticism may not be agreeable, but it is necessary."
        " It fulfils the same function as pain in the human"
        " body. It calls attention to an unhealthy state of"
        " things.\n"
        "\t--Winston Churchill";
@end smallexample
@end cartouche

@cartouche
@smallexample
# file: test.cfg
info: @{
  name = "Winston Churchill";
  @@include "quote.cfg"
  country = "UK";
@};
@end smallexample
@end cartouche

Extraction

@cartouche
@smallexample
# file: quote.cfg
quote = "Criticism may not be agreeable, but it is necessary."
        " It fulfils the same function as pain in the human"
        " body. It calls attention to an unhealthy state of"
        " things.\n"
        "\t--Winston Churchill";
@end smallexample
@end cartouche

@cartouche
@smallexample
# file: test.cfg
info: @{
  name = "Winston Churchill";
  @@include "quote.cfg"
  country = "UK";
@};
@end smallexample
@end cartouche