I want to match the closing quote together with the opening quote of the following string if both are on the same line. Two strings may be separated either by a blank or a blank-plus-blank + . Regex engine: Python F.i. from this is "some string" "; which should match" 234 "and this" + "should also match\"" "\"and this" but not this: " " a " + " I'd like to see matches for: line 1: " " from between some string and ; which... line 2: " + " from between and this and should also match\" " " from between should also match\" and \"and this line 3: No matches So in fact, I think it might be best to only match the groups " " and " + " if there is an odd number of quotes before and after the group. Since lookbehing/ahead is fixed length only, I didn't find a good way to do it. I tried re.compile(r'(" \+ ")|(" ")(?!;|,)') but this assumes that there may be no semicolon within a string and also re.compile(r'"[^"]+") but this only finds the strings themselves, but not the "inter-string" quotes. Continue reading...