Re: String substitution bug

[Lawrence Velázquez]

On Sat, Nov 23, 2024, at 7:11 PM, marcel.plch via Bug reports for the GNU 
Bourne Again SHell wrote:
> I am trying to do some file management in bash and I have strings in 
> this format:
>
> 1 dir/hello.txt
> 2 dir2/bar.jpg
>
> When I run this substitution:
> ${FOO/[:space:]*/Hello}
> I get this result:
> 1 dir/hHello
>
> The goal is to substitute everything after the first space (including 
> the space) with Hello
>
> Seems like a bug to me.

It is not a bug.  Your pattern is incorrect; you should be using
"[[:space:]]", not "[:space:]".  The former is a bracket expression
containing the character class expression for the "space" character
class, while the latter is a bracket expression that matches any
of the characters ":", "s", "p", "a", "c", or "e".

        $ FOO='1 dir/hello.txt'
        $ echo "${FOO/[[:space:]]*/Hello}"
        1Hello

-- 
vq