If you are working in regular expressions, non-alphanumeric characters are recognised
only if they are preceded by a backslash (\) else it will be treated as:
• perl operators or
• popups an error or
• you will
get undesired results.
Lets take a look at your problem.
\ (backslash is a non-alphanumeric character).
\\ (in regular expression, two backslashs are recognised as single backslash)
while trying the below segment...
$txt=~s/\\/\\\\/g;
\\\\ (FOUR backslashs becomes 2 backslashs)
therefore your results will be...
__\\U//__
For your desired output try the below one:
$txt = ' __\\U//__ ';
$txt =~s/\\/\\\\\\\\/g;
print $txt;
regards
Franklin
Don't put off till tomorrow, what you can do today.
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