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Code returning more characters than needed #263570 22/08/18 04:49 PM
Joined: Nov 2004 Posts: 842 I live inside your computer. S... Jigsy OP Hoopy frood
OP Jigsy Hoopy frood Joined: Nov 2004 Posts: 842 I live inside your computer. S...	So I recently began rescripting an IRCd in mIRC for the first time in over a decade. Anyway, I was trying to convert an ident to legal characters (a-z, A-Z, 0-9, - _ and .) using the following code: Code: alias -l legalIdentChar { ; $legalIdentChar(<char>) if ($pos(abcdefghijklmnopqrstuvwxyz1234567890-.,$1,1) > 0) { return $1 } else { return _ } ; `-> _ is also a valid character, but it's easier to sweep it under this. } alias -l legalizeIdent { ; $legalizeIdent(<args>) return $regsubex($1,/(.)/g,$legalIdentChar(\t)) } But I noticed this: Code: $legalizeIdent(J) > J $legalizeIdent(J@) > J_ ^-> Are fine, but... $legalizeIdent(£) > __ $legalizeIdent(<random kanji which the forum converted>) > ___ Any reason why it's returning more than one _ for a single character? Or this is a bug? What do you do at the end of the world? Are you busy? Will you save us?

Re: Code returning more characters than needed Jigsy #263571 22/08/18 05:03 PM
Joined: Jan 2004 Posts: 2,127 maroon Hoopy frood
maroon Hoopy frood Joined: Jan 2004 Posts: 2,127	You need the 'u' flag dealing with characters above codepoint 127. Code: //echo -a $regsubex($chr(233),/(.)/g ,x) is xx //echo -a $regsubex($chr(233),/(.)/gu,x) is x

Re: Code returning more characters than needed maroon #263572 22/08/18 05:08 PM
Joined: Nov 2004 Posts: 842 I live inside your computer. S... Jigsy OP Hoopy frood
OP Jigsy Hoopy frood Joined: Nov 2004 Posts: 842 I live inside your computer. S...	Thanks. :3 What do you do at the end of the world? Are you busy? Will you save us?

Re: Code returning more characters than needed Jigsy #263573 23/08/18 12:14 AM
Joined: Feb 2003 Posts: 2,812 Raccoon Hoopy frood
Raccoon Hoopy frood Joined: Feb 2003 Posts: 2,812	What is the purpose of this function, if I may ask? To make sure only allowed characters are used in a string? This will happen a lot over the course of a program, and it can be done with just a single $regsubex() without needing two specialized functions. Code: var %user_ident = $lower($1) var %user_ident = $regsubex(%user_ident,/([^a-z0-9_.-])/gu,_) Simple string sanitation. Well. At least I won lunch. Good philosophy, see good in bad, I like!

Re: Code returning more characters than needed Raccoon #263579 23/08/18 03:01 PM
Joined: Nov 2004 Posts: 842 I live inside your computer. S... Jigsy OP Hoopy frood
OP Jigsy Hoopy frood Joined: Nov 2004 Posts: 842 I live inside your computer. S...	My knowledge of regex is surprisingly limited. What do you do at the end of the world? Are you busy? Will you save us?

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