On Sat, Jul 21, 2001 at 04:53:35PM +0200, Joost Kooij wrote: > What is the need for the seperate variable $BEGINREGEX? It > complicates things enormously when you want a variable $no to be > evaluated whenever $BEGINREGEX is evaluated. The only sane way out is > to completely reevaluate $BEGINREGEX after each change to $no. To do > that successfully, you have to escape '$', '"', and '\' and then > escape some of the escapes, but others not, depending on wheter they > should never be expanded, expanded in the eval or expanded when > applying the regexp. I wouldn't touch that with a ten foot pole if I > were you. If you succeed at it, you have great job security, and a > maintenance nightmare.
Right, I agree. > Easier is to not use a $BEGINREGEX at all: > > $line =~ m(^<!-- // begin of news$no // !-->$); > > should always work, for the current value of $no. Which is what I ended up doing. I made a function getBeginRegex() and getEndRegex() which return the string I then use as a regex for searching. This way I don't have to write the regex string many times over in the program, which is what I was trying to avoid when I did the $BEGINREGEX thing. Thanks a lot for your help! Sven
