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Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell

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From: Stephane Chazelas <stephane.chazelas@xxxxxxxxx>
To: Peter Stephenson <p.stephenson@xxxxxxxxxxx>, Zsh hackers list <zsh-workers@xxxxxxx>
Subject: Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
Date: Tue, 30 Aug 2016 21:10:16 +0100
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2016-08-30 20:54:29 +0100, Stephane Chazelas:
[...]
> Yes, it's not POSIX. It was probably either a tcsh or bash
> invention as both had it in 1990 and ksh88 didn't and still
> doesn't have it.
[...]

tcsh.

https://groups.google.com/forum/#!original/net.sources/WdFUCQb7vr0/o3NafIxCUV4J
https://groups.google.com/forum/#!original/net.sources/VpHdbFdEi0w/a_AgLdbJbxkJ
(1984) a patch for tcsh with SHLVL referenced.

Strangely though, tcsh 5.7 from 1987 didn't have it.

-- 
Stephane

References:
- [bug] $SHLVL decremented for the last command of a subshell
  - From: Stephane Chazelas
- [PATCH] [bug] $SHLVL decremented for the last command of a subshell
  - From: Stephane Chazelas
- Re: [PATCH] [bug] $SHLVL decremented for the last command of a subshell
  - From: Bart Schaefer
- [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
  - From: Stephane Chazelas
- Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
  - From: Peter Stephenson
- Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
  - From: Stephane Chazelas
- Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
  - From: Peter Stephenson
- Re: [PATCHv2] [bug] $SHLVL decremented for the last command of a subshell
  - From: Stephane Chazelas

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