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Posted by xhoster on May 9, 2008, 12:32 pm
Please log in for more thread options > >I'm modifying a system (totally more than 100000-lines for tens of
> >files) written by others and would like to identify which line leads to
> >the following problem.
> >
> >Invalid [] range "l-c" in regex; marked by <-- HERE in
> >m/^3-oxoacyl-[acyl-c <-- HERE arrier protein] reductase fabg1$/
>
> Well, the character set
> [acyl-carrier protein]
> does contain the range 'l-c' which is empty. Obviously that is what perl
> is complaining about. Solution: just escape the dash with a leading
> backslash.
> However, I doubt that will produce the effect you are looking for. Are
> you really, really sure you want that character set there? To me it
> looks much more like you want a literal match of the text 'acyl-carrier
> protein'.
I think it is much more likely that the string is coming from a data file
and put into the regex via a variable, not hard-coded into the script.
Going further out on a limb, he probably should use index rather than
a regex once he tracks down where the regex is.
>
> >Unfortunately the error message does not tell me which line of which
> >file leads to the problem.
>
> First I didn't believe you but a quick test confirms that you are right.
> The perl interpreter does not print a file/line information (tried it on
> 5.6.1). Wierd!
Yes indeed. I had to dig up a copy of 5.6.1 just to see it for myself.
So one obvious tip to the OP would be to upgrade to a newer perl,
preferably for production or at least just for debugging. (I didn't see
this documented in the Changes* files, so I don't know when the code was
fixed.)
>
> >Could anybody advise?
>
> Just grep your files for the offending m/// instruction. Something
> similar to
> grep "acyl-carrier protein" *.pl
Probably have to grep all the data files, too.
Xho
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