Michael J Wise <mjwise(_at_)kapu(_dot_)net> writes:
...
(I prefer to escape ALL the non-alpha characters, just because)
...
Unlike perl regexps, escaping a non-alpha character may *add* magic to it.
In particular,
/ < >
all match their own literal value, while
\/ \< \>
all have special meaning. The only characters which have special meaning
when unescaped are:
(|)*?+.^$[\
There is no guarantee that the menaing of other escaped characters will
not change in the future. For example, \{ and \} might one day work
like grep's { and }. (Maybe I should make the next version of procmail
log such undefined sequences.)
Philip Guenther
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