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use of "less" in function and interrupt

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From: Vincent Lefevre <vincent@xxxxxxxxxx>
To: zsh-workers@xxxxxxx
Subject: use of "less" in function and interrupt
Date: Wed, 20 Jul 2016 13:36:33 +0200
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With zsh 5.2, if I type:

zira% sleep 5 | less

and Ctrl-C immediately after, this interrupts the "sleep 5" and
everything is fine ("less" ignores the SIGINT).

But if I use a function:

zira% tless() { less "$@"; }
zira% sleep 5 | tless

then "less" is left stopped in background after I type a key.

bash and mksh do not have this problem (Debian's ksh93 93u+20120801-2
is completely broken as "less" is immediately put in background).

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Follow-Ups:
- Re: use of "less" in function and interrupt
  - From: Peter Stephenson

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