Sharan Basappa wrote:
Hi,
Hello,
I am using debugging for a program of mine.
The debugger exits probably after a regex match fail. I am not sure
why it should exit.
Any ideas, clues?
Regards
main::(StTrAuto.pl:106): my @new_auto_tr = ();
DB<2> s
main::(StTrAuto.pl:107): foreach $temp (@auto_tr)
main::(StTrAuto.pl:108): {
DB<2> s
main::(StTrAuto.pl:109): if($temp =~ m/^$start_state)/)
main::(StTrAuto.pl:110): {
DB<2> s
Unmatched ) in regex; marked by <-- HERE in m/^0) <-- HERE / at
^^^^^^^^^^^^^^^^^^^^^
The reason is that you have a right parenthesis without a left
parenthesis to the left of it. Parentheses are special is a regular
expression so to match a literal parenthesis you have to put a backslash
in front of it like: \)
perldoc perldiag
[ snip ]
unmatched ( in regex; marked by <-- HERE in m/%s/
(F) Unbackslashed parentheses must always be balanced in regular
expressions. If you’re a vi user, the % key is valuable for
finding the matching parenthesis. The <-- HERE shows in the
regular expression about where the problem was discovered. See
perlre.
John
--
Perl isn't a toolbox, but a small machine shop where you
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