Re: Nick Dokos: texi2dvi egrep regexp

[Nick Dokos]

Nick Dokos <address@hidden> wrote:

> 
>        Finally, certain named classes of characters are predefined
>        within bracket expressions, as follows.  Their names are self
>        explanatory, and they are [:alnum:], [:alpha:], [:cntrl:],
>        [:digit:], [:graph:], [:lower:], [:print:], [:punct:], [:space:],
>        [:upper:], and [:xdigit:].  For example, [[:alnum:]] means
>        [0-9A-Za-z], except the latter form depends upon the C locale and
>        the ASCII character encoding, whereas the former is independent
>        of locale and character set.  (Note that the brackets in these
>        class names are part of the symbolic names, and must be included
>        in addition to the brackets delimiting the bracket expression.)
>        Most meta-characters lose their special meaning inside bracket
>        expressions.  To include a literal ] place it first in the list.
>        Similarly, to include a literal ^ place it anywhere but first.
>        Finally, to include a literal - place it last.
> 
> Given that, would it make sense to replace the egrep invocation in
> texi2dvi with
> 
>          egrep '^(/|[:alpha:]:/)'
> 
> which would be valid under any locale?

Ugh, wrong syntax:

         egrep '^(/|[[:alpha:]]:/)'

Also Eric Fraga mentioned that this might include accented characters
which is ... undesirable.

Nick