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| From | "Chris F.A. Johnson" <chris@cfajohnson.com> |
| Newsgroups | gnu.bash.bug |
| Subject | Re: BUG?: (or what's going on?) test for NL == NL fails (bash-4.3.39(3)-release) |
| Date | Sun, 2 Aug 2015 17:27:55 -0400 (EDT) |
| Lines | 20 |
| Approved | bug-bash@gnu.org |
| Message-ID | <mailman.7769.1438550903.904.bug-bash@gnu.org> (permalink) |
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| Cc | Linda Walsh <bash@tlinx.org> |
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On Sun, 2 Aug 2015, Linda Walsh wrote:
>
> also noticed this similar strange behavior:
>
> used 'ord'** for this test (trying to compare decimal val of chars)
>
> isatty () { test -c /proc/self/fd/1 ; }
> ord () { local nl=""; isatty && nl="\n"; printf "%d$nl" "'$1" ; } ord () { local nl=""; isatty && nl="\n"; printf "%d$nl" "'$1" ; }
>> ord "$(printf "\n")"
Trailing newline are stripped from command substitution, making "$(printf "\n")" and empty string.
If you want a newline, use:
ord $'\n'
--
Chris F.A. Johnson, <http://cfajohnson.com>
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Re: BUG?: (or what's going on?) test for NL == NL fails (bash-4.3.39(3)-release) "Chris F.A. Johnson" <chris@cfajohnson.com> - 2015-08-02 17:27 -0400
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