bug#30724: eshell: escaped tilde is not treated as such

[Noam Postavsky <npostavs@gmail.com>]

Jonathan Kyle Mitchell <kyle@jonathanmitchell.org> writes:

> tags 30724 + patch
> quit

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> I found a way to get eshell to escape special chars.  It seems most of
> the eshell builtin commands that take file arguments are already tagged
> with the eshell-no-numeric-conversions property.  By adding the true
> part of the if condition in eshell-lisp-command, it is possible to
> quote the arguments of special filenames.  The attached patch checks
> for "~" and "*".

Perhaps we should distinguish between file and non-numeric arguments
though?  E.g., I think the file-name-quote might not make sense for the
commands below:

> ./esh-proc.el\0202:(put 'eshell/kill 'eshell-no-numeric-conversions t)

> ./em-unix.el\0167:(put 'eshell/man 'eshell-no-numeric-conversions t)

> ./em-unix.el\0664:(put 'eshell/make 'eshell-no-numeric-conversions t)

> ./em-unix.el\01050:(put 'eshell/locate 'eshell-no-numeric-conversions 
> ./em-unix.el\01059:(put 'eshell/occur 'eshell-no-numeric-conversions t)
> ./esh-cmd.el\01185:(put 'eshell/which 'eshell-no-numeric-conversions t)

> ./em-tramp.el\097:(put 'eshell/su 'eshell-no-numeric-conversions t)
> ./em-tramp.el\0139:(put 'eshell/sudo 'eshell-no-numeric-conversions t)


> Fix bug#30724 by checking if "*" and "~" are arguments to the current command
> and quoting them relative to `default-directory' if so.  This leverages the
> the fact that the existing eshell builtin commands that accept file arguments
> are tagged with the eshell-no-numeric-conversions property.  The existing
> details of eshell command execution are left unchanged.
>
> * lisp/eshell/esh-cmd.el (eshell-lisp-command)

The ChangeLog item should at the beginning, as in,

* lisp/eshell/esh-cmd.el (eshell-lisp-command): Fix bug#30724 by
checking if "*" and "~" are arguments to the current command ...