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Re: zpty woes

X-seq: zsh-workers 25035
From: Stephane Chazelas <Stephane_Chazelas@xxxxxxxx>
To: Jaime Vargas <jev@xxxxxxx>
Subject: Re: zpty woes
Date: Thu, 15 May 2008 14:10:42 +0100
Cc: zsh-workers@xxxxxxxxxx
In-reply-to: <34AE8142-F5DA-44FD-96BA-61BDE12BC74E@xxxxxxx>
Mail-followup-to: Jaime Vargas <jev@xxxxxxx>, zsh-workers@xxxxxxxxxx
Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
References: <34AE8142-F5DA-44FD-96BA-61BDE12BC74E@xxxxxxx>

On Thu, May 15, 2008 at 08:02:04AM -0400, Jaime Vargas wrote:
[...]
> zpty -t scppty || echo "something went wrong" && exit
[...]

That would always exit unless echo returned with a non-zero exit
status

A || B && C

must be read

(A || B) && C

So C is executed if either A or B succeeds.

You should write it:

A || {
  B
  C
}

or

if ! A; then
  B
  C
fi

or

die() {print -r -- $1 >&2; exit 1;}
A || die "something wrong"

-- 
Stéphane

References:
- zpty woes
  - From: Jaime Vargas

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