On Sat, Sep 13, 2025 at 20:12:42 +1000, Duncan Roe via Bug reports for the GNU
Bourne Again SHell wrote:
> On Fri, Sep 12, 2025 at 11:23:17PM -0400, Lawrence Velázquez wrote:
> > On Fri, Sep 12, 2025, at 10:56 PM, Duncan Roe via Bug reports for the GNU
> > Bourne Again SHell wrote:
> > > Bash is not recognising U+00A0 as whitespace. What to do about it, if
> > > anything?
> >
> > I believe bash mostly tokenizes on <blank> characters. Is U+00A0
> > considered a <blank> in your locale?
I'm not sure that's true.
> It certainly *renders* as a space.
> Other than that, I'm not sure I understand your question.
hobbit:~$ unset -v a; a=(' ' $'\t' $'\r' $'\n' $'\u00A0')
hobbit:~$ for c in "${a[@]}"; do if [[ $c = [[:blank:]] ]]; then printf '%s is
blank\n' "${c@Q}"; fi; done
' ' is blank
$'\t' is blank
hobbit:~$ cat /etc/debian_version
13.1
hobbit:~$ locale
LANG=en_US.utf8
LANGUAGE=
LC_CTYPE="en_US.utf8"
LC_NUMERIC="en_US.utf8"
LC_TIME=C
LC_COLLATE="en_US.utf8"
LC_MONETARY="en_US.utf8"
LC_MESSAGES="en_US.utf8"
LC_PAPER="en_US.utf8"
LC_NAME="en_US.utf8"
LC_ADDRESS="en_US.utf8"
LC_TELEPHONE="en_US.utf8"
LC_MEASUREMENT="en_US.utf8"
LC_IDENTIFICATION="en_US.utf8"
LC_ALL=
In my locale, only space and tab are considered :blank: out of the set
space, tab, carriage return, newline, non-breaking space. However, even
if NBSP were considered a :blank:, I'm not sure the bash parser would
care. (In fact, I'd consider it a bug if it did.)
