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From: =?UTF-8?B?SsOpcsOpbWllIFJvcXVldA==?= <arkanosis@gmail.com>
Date: Mon, 24 Oct 2011 16:59:43 +0200
Message-ID: <CAFOazAOYEos8LNdhG6+KHtGPJoFausu1SO4ZMq5OA9ip22VFAw@mail.gmail.com>
Subject: Re: checking for file existence when I don't know the exact name
To: Zsh Users <zsh-users@zsh.org>
Cc: TJ Luoma <luomat@gmail.com>
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2011/10/24 TJ Luoma <luomat@gmail.com>:
> 2011/10/24 J=C3=A9r=C3=A9mie Roquet <arkanosis@gmail.com>
>> From the man, section =E2=80=9Cconditional expressions=E2=80=9D :
>>
>> =C2=A0=E2=80=9CFile generation is not =C2=A0performed on any form of arg=
ument to
>> conditions.=E2=80=9D
>
> This isn't file _generation_, is it? Or am I not understanding zsh's term=
s?

Err, it's file*name* generation, actually. In zsh's terms, filename
generation refers to globbing.

Peter, maybe we should fix the doc there?

> I still don't fully understand why / when to use [[ ]] instead of [ ]

Most of the time, I guess. [[ ]] is part of the syntax and has a
number of advanced features while [ is just a command very similar to
=E2=80=9Ctest=E2=80=9D and ] an argument to this command.
Unless you want to keep your scripts portable accross different
shells, of course.

Best regards,

--=20
J=C3=A9r=C3=A9mie

diff --git a/Doc/Zsh/cond.yo b/Doc/Zsh/cond.yo
index 489ee35..71971b4 100644
--- a/Doc/Zsh/cond.yo
+++ b/Doc/Zsh/cond.yo
@@ -184,7 +184,7 @@ enditem()
 Normal shell expansion is performed on the var(file), var(string) and
 var(pattern) arguments, but the result of each expansion is constrained to
 be a single word, similar to the effect of double quotes.
-File generation is not performed on any form of argument to conditions.
+Filename generation is not performed on any form of argument to conditions=
.
 However, pattern metacharacters are active for the var(pattern) arguments;
 the patterns are the same as those used for filename generation, see
 ifzman(\