I noticed something strange while executing some 'eval'-ed commands: the
-e/-o errexit appears to become active out of nowhere.
$ mksh -c 'echo $-; eval '\''echo $-'\''; echo $-'
hc
ehc
hc
But it looks like it's appearances only; it's not actually effective.
$ mksh -c 'eval '\''echo $-; false; echo phantom e'\'
ehc
phantom e
I tested mksh versions down to R49 and they all have this bug. However,
its ancestor pdksh does not have this bug.
However, both pdksh and mksh render 'set -e' ineffective for eval'ed
commands, which is a bug in itself; no other shell including ksh93
shares this behaviour. Thus the expected output for the last command
above is 'hc' and nothing else.
Thanks,
- M.
--
modernish -- harness the shell
https://github.com/modernish/modernish
