Re: witekfl branch status

Kalle Olavi Niemitalo <[email protected]> writes:

> - Automatically detect whether and how the string has been
>   quoted, and adapt.  This detection cannot be based solely on
>   whether the system is Debian, because the user's ~/.mailcap
>   may contain entries that are quoted differently.  Also, if
>   the % is nested deeply inside backquotes and such, it may
>   not be obvious what should happen.  In such cases, it would
>   be best to give an error message.

It is also possible to construct shell commands where parsing
the quotes correctly requires recognizing "case" statements.

echo "$(case "$EDITOR" in emacs) echo "%s'" ;; esac)" \'

If the parser thinks the $() ends at the first closing
parenthesis, it will seem that the %s is not quoted at all.
In reality though, %s is inside "" inside $() inside "",
and metacharacters should be escaped as if inside only "".

Bash 3.1.17 doesn't get this right (Debian bug 86397); dash 0.5.3
does.  Which perhaps implies that people are unlikely to actually
use such constructs in mailcap files.  This may eventually get
fixed in Bash, however.

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