Hi nursyza,

You've received good answers already, but I would add that the syntax could be simplified. Assuming that your target string is in the $_ default variable because you're reading the file in a while loop (for example a while (<$IN>) { # ... construct, assuming $IN is your file descriptor), then you don't need to test for "definedness," because the while loop already does that check. You also don't need the extra $MODULE_NAME variable; using directly the $_ variable makes the regex syntax simpler (if you don't specify any target string, a regex will by default match against $_). So putting this together, you could have something like this: 

print "Module name = $1\n" if /(MODULE\s+\w+)\s*\(/;   # Prints: Modul
+e name = MODULE C17

[download]
Or, using the /x modifier already described by other monks: 
print "Module name = $1\n" if /( MODULE \s+ \w+ ) \s* \(/x;

[download]

In reply to Re: Pattern matching by Laurent_R
in thread Pattern matching by nursyza

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