From: ts <decoux@...>
Date: 2001-06-09T18:19:11+09:00
Subject: [ruby-talk:16349] Re: Tcl string map lookalike

>>>>> "Y" == YANAGAWA Kazuhisa <kjana@os.xaxon.ne.jp> writes:

Y>     map = {"&lt;" => "<", "&gt;" => ">", "<" => "&lt;", ">" => "&gt;"}
Y>     p str.gsub(/#{map.keys.join("|")}/) { map[$&] }

 You can't do this. If tcl use an array (and not an hash) this is because
 you can't predict the order of the keys in an hash.

 With

 set map [list "&lt;" "<" "&lt;" ">" "&lt" "<" "&gt" ">"]

 the substitution for "&lt;" is always tested before "&lt"

 And for tcl "str map" don't use a regexp, this mean that you must call
 Regexp#quote when you build the regexp.


Guy Decoux