Regex: Match a pattern within quoted texts

user_1432623 0
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Text is

lemma A:
"
 abx K() bc
"

// comment lemma B
lemma B:
"
 abx bc sdsf
"


lemma C:
"
 abfdfx K() bc
"


lemma D:
"
 abxsf bc
"

I want to find the lemmas which contain K() inside its following quoted text. I have tried Perl regex (?s)^[ ]*lemma.*?"(?!").*?K\( but it overlaps two lemmas. The output should be: lemma A: "..." and lemma C: "...".

regex
2 Answers

You could use:

(?s)^[ ]*lemma[^"]*"[^"]*?K\(

[^"] means "any character but ""

See a demo here

user_46077330

If the double quotes are at the start of the string, you can match a newline and then the double quote.

Then match any char except the double quote until you match K(

^[ ]*lemma\b.*\R"[^"]*K\(
  • ^ Start of string
  • [ ]*lemma\b Match optional spaces and lemma
  • .*\R Match the rest of the line and a newline
  • "[^"]* Match " followed by optional chars other than "
  • K\( Match K(

Regex demo

user_54249880
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