regsub

[Dedan]

would you please help me,
i have a 300 line script that has only 1 bug left.
i have been trying for days to get this 1 bug out.
the bug has to do with charcters. : = < > ¶ etc.

i need a regsub command.
I have read the manuals and tried until i have given up.
please help.

i want a regsub command that replaces ALL charcters with "x"
except a-z , A-Z and 0-9


regsub -all -- {} $text "x" text

regsub -all -- {![[:alnum:]]} $text "x" text
regsub -all -- {![A-Za-z0-9]} $text "x" text




thanks

[egghead]

i want a regsub command that replaces ALL charcters with "x"
except a-z , A-Z and 0-9

regsub -all -- {![A-Za-z0-9]} $text "x" text

thanks

In regular expressions:

[a-z] : match range of characters
[^a-z] : match characters not in range

[Dedan]

thanks egghead ... i kept thinking
"^" ment "only the first letter" but that
is when it outside the brackets ... thanks.

finial code

regsub -all -- {[^ A-Za-z0-9]} $text "x" text

thanks again egghead