File::glob pattern matching

[bjlockie]

I tried [[:digit:]] which is posix but doesn't work.
I know ? matches any single character but I only want to match exactly 2 digits.

 

[Rainer Weikusat]

I tried [[:digit:]] which is posix but doesn't work.
I know ? matches any single character but I only want to match
exactly 2 digits.

[0-9][0-9]

should do the trick (if you're happy with standard 'western/ arabic'
numbers).

 

[Martijn Lievaart]

I tried [[:digit:]] which is posix but doesn't work.
I know ? matches any single character but I only want to match exactly
2 digits.

[0-9][0-9]

should do the trick (if you're happy with standard 'western/ arabic'
numbers).

or [0-9]{2}, or [[:digit:]]{2}.

M4

 

[Martijn Lievaart]

I tried [[:digit:]] which is posix but doesn't work.
I know ? matches any single character but I only want to match
exactly 2 digits.

[0-9][0-9]

should do the trick (if you're happy with standard 'western/ arabic'
numbers).

or [0-9]{2}, or [[:digit:]]{2}.

The OP is using globs, not regexes.

Oopsie.

M4

 

[Marc Girod]

or [0-9]{2}, or [[:digit:]]{2}.

The OP is using globs, not regexes.

But {2} is explicitly supported in File::Glob, and also works in
CORE::glob:

tmp> touch aa12bb
tmp> perl -le '@f=glob(q(aa[0-9]{2}bb));print for @f'
aa12bb

Now, it is correct that [[:digit::]] doesn't work (and should?)

tmp> perl -M'File::Glob qwglob)' -le \
'@f=glob(q(aa[[:digit:]]{2}bb));print for @f'

Marc

 

[Marc Girod]

Now, it is correct that [[:digit::]] doesn't work (and should?)

tmp> ls aa[[:digit:]][[:digit:]]bb
aa12bb
tmp> ls aa[[:digit:]]{2}bb
ls: cannot access aa[[:digit:]]{2}bb: No such file or directory

I meant that [[:digit:]] works with ls, but {2} doesn't

Marc

 

[Marc Girod]

It doesn't do what you think it does. Try aa13bb.

Indeed:

tmp> perl -le '@f=glob(q(aa[0-9]{2,3}bb));print for @f'
aa12bb
aa13bb

I didn't read with enough attention... and I missed the fact that
the following was ambiguous, and only explained later:

{} Multiple pattern

A strict reading of SUSv4 actually says it should, to my surprise,
but traditional shells didn't support it. (On my system the only
shell which does is bash, as might be expected.)

That's the only one I tried...
Thanks.

Marc