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From: Eli Schwartz <eschwartz@archlinux.org>
Newsgroups: gnu.bash.bug
Subject: Re: make install failed; dump core in mkdir
Date: Mon, 2 Dec 2019 10:06:36 -0500
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On 12/2/19 9:56 AM, Greg Wooledge wrote:
> On Mon, Dec 02, 2019 at 09:51:12PM +0700, pepa65 wrote:
>> On 12/2/19 9:38 PM, Andreas Kusalananda K=C3=A4h=C3=A4ri wrote:>      =
for dirpath do
>>>          command mkdir -p "$dirpath" || return
>>>      done
>> It is very sad that the 'do' is not optional (non-backwards compatibil=
ity
>> breaking feature request!), and it has to be the start of the next
>> commandline (after ';' or the start of a new line), so:
>>
>>     for dirpath
>>     do command mkdir -p "$dirpath" || return
>>     done
>=20
> You're mistaken.
>=20
> wooledg:~$ set -- a b c
> wooledg:~$ for i do echo "$i"; done
> a
> b
> c

Interesting, I didn't expect that to work. It doesn't work if you use
'in', which I normally do.

$ for i in "$@" do echo "$i"; done
bash: syntax error near unexpected token `done'

I guess that makes sense -- the 'in' will try to treat the words "do"
"echo" "$i" as iteration elements, but without 'in', there can only be
one argument to 'for', so bash can safely parse 'do' without the ;
separator.

But I think I'll still use them despite being not strictly needed, or
I'll just confuse myself once I do need them. :p I've used them for too
long by now, anyway.

--=20
Eli Schwartz
Arch Linux Bug Wrangler and Trusted User


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