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Avoid Groff hanging on MS-Windows when invoked by "M-x man"

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* lisp/man.el (Man-build-man-command): On MS-Windows, redirect
stdin of 'man' to the null device, to make sure Groff exits
immediately after formatting the man page.
This commit is contained in:
Eli Zaretskii 2019-08-08 16:17:51 +03:00
parent b83f83ccd4
commit 691790b8ea
1 changed files with 7 additions and 1 deletions
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8
lisp/man.el
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@ -624,7 +624,13 @@ This is necessary if one wants to dump man.el with Emacs."
;; so we don't need `2>' even with DOS shells
;; which do support stderr redirection.
((not (fboundp 'make-process)) " %s")
((concat " %s 2>" null-device)))))
((concat " %s 2>" null-device
;; Some MS-Windows ports of Groff
;; try to read stdin after exhausting
;; the command-line arguments; make
;; them exit if/when they do.
(if (eq system-type 'windows-nt)
(concat " <" null-device)))))))
(flist Man-filter-list))
(while (and flist (car flist))
(let ((pcom (car (car flist)))