Process substitution as part of a word [was: Incorrect alias expansion ...]

[Martijn Dekker]

Op 02-02-22 om 20:59 schreef Chet Ramey:
> [...] it makes no sense to join a process substitution to another word.

But it does. In arguments that look like assignments, and in GNU-style 
long options, file names can be part of a larger word.

Assuming tar is GNU tar, something like

    tar -c -f txt.tar --files-from=<( ls *.txt )

works fine on bash and zsh, but not on ksh93; the process substitution 
becomes a separate word and the command fails.

This was reported as a bug to the abandoned AT&T ksh2020 development 
effort but never fixed there, and I've no clue how to fix it yet either.
https://github.com/att/ast/issues/1487
https://github.com/ksh93/ksh/issues/215

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