Re^2: Regexp: How to match in middle but not the ends?

If you strip the L, don't forget (like I did first) to strip an L at the start and end of the string. You should also use "+" to strip any sequence of L. I think, this will do: s/(?:^L+)|(?:-L+)|(?:L+-)|(?:L+$)/-/g (I used (?:) because I'm currently too busy (lazy) to test...

s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

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Re^3: Regexp: How to match in middle but not the ends? by ikegami (Patriarch) on Jul 30, 2006 at 17:16 UTC
No, he shouldn't use "+", since he doesn't want to strip any sequence of "L". For example, your solution fails to match "LL" in "---LLLL---". My solution was lacking since I wasn't checking for an L at the start or end of the string. Fixes: `$string =~ s/-L\|L-/-/g; $string =~ s/^L//; $string =~ s/L$//;` [download] or `$string =~ s/^L\|(?<-)L\|L(?=-)\|L$//g;` [download] or `# Does a bit more than stripping, but in an inconsequential fashion. $string =~ s/^L\|-L\|L-\|L$/-/g;` [download]	[reply] [d/l] [select]
Re^4: Regexp: How to match in middle but not the ends? by Skeeve (Parson) on Jul 30, 2006 at 20:10 UTC
It's debatable: The OP said, the strings may not start or end with L. He didn't say which strings: Those, that are returned (use +) or those that are found (don't use +). I vote for the strings returned ;-) But only the OP can tell. P.S. See his (partial) Solution, He's cutting of all leading L's, so I have a good argument for my view, don't you agree? `s$$([},&%#}/&/]+}%&{});#$&&s&&$^X.($'^"%]=\&(\|?{%` `+`.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e	[reply] [d/l] [select]