Chet Ramey <chet.ra...@case.edu> wrote: > On 6/29/20 4:33 PM, Dmitry Alexandrov wrote: >> 1) unexpected, as (a) it does not seem to be documented, (b) itʼs >> counter-intuitive and (c) other bourne-like shells (busybox ash, dash, >> ksh93, mksh, zsh) does not do that; > > It's an opportunity for optimization, not a bug
I am not saying that this is a bug, only that it is inconsistent with almost any other bourne-like shell. >> 2) inconvenient, as in some cases PID of the parent shell is not an >> appropriate substitute for the PID of the real process. > since the results are correct. The results are _different_ across shell and, unfortunately, results provided by Bash are the least useful. Consider: $ command … & [1] 30737 $ strace -p $! strace: Process 30737 attached wait4(-1, :-/
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