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Allow use of Gnus search groups as notmuch path: search term

* lisp/gnus/nnir.el (nnir-notmuch-filter-group-names-function): New
option governing whether and how to use Gnus' search groups as path:
search terms to notmuch.
(nnir-run-notmuch): Check and possibly use above variable.
(Bug#33122)
This commit is contained in:
Eric Abrahamsen 2018-10-23 10:51:37 +08:00 committed by Eli Zaretskii
parent 1f38454e00
commit 4e96444757

View file

@ -518,6 +518,26 @@ that it is for notmuch, not Namazu."
:type '(regexp)
:group 'nnir)
(defcustom nnir-notmuch-filter-group-names-function
#'gnus-group-short-name
"Whether and how to use Gnus group names as \"path:\" search terms.
When nil, the groups being searched in are not used as notmuch
:path search terms. It's still possible to use \"path:\" terms
manually within the search query, however.
When a function, map this function over all the group names. By
default this runs them through `gnus-group-short-name', and it is
recommended to use this transform, at least. Further
transforms (for instance, converting \".\" to \"/\") can be
added like so:
\(add-function :filter-return
nnir-notmuch-filter-group-names-function
(lambda (g) (replace-regexp-in-string \"\\\\.\" \"/\" g)))"
:version "27.1"
:type '(choice function
nil))
;;; Developer Extension Variable:
(defvar nnir-engines
@ -1505,23 +1525,30 @@ Tested with Namazu 2.0.6 on a GNU/Linux system."
(> (nnir-artitem-rsv x)
(nnir-artitem-rsv y)))))))))
(defun nnir-run-notmuch (query server &optional _group)
(defun nnir-run-notmuch (query server &optional groups)
"Run QUERY against notmuch.
Returns a vector of (group name, file name) pairs (also vectors,
actually)."
;; (when group
;; (error "The notmuch backend cannot search specific groups"))
actually). If GROUPS is a list of group names, use them to
construct path: search terms (see the variable
`nnir-notmuch-filter-group-names-function')."
(save-excursion
(let ( (qstring (cdr (assq 'query query)))
(groupspec (cdr (assq 'notmuch-group query)))
(let* ((qstring (cdr (assq 'query query)))
(prefix (nnir-read-server-parm 'nnir-notmuch-remove-prefix server))
artlist
(article-pattern (if (string-match "\\`nnmaildir:"
(gnus-group-server server))
":[0-9]+"
"^[0-9]+$"))
":[0-9]+"
"^[0-9]+$"))
(groups (when nnir-notmuch-filter-group-names-function
(mapcar nnir-notmuch-filter-group-names-function
groups)))
(pathquery (when groups
(concat "("
(mapconcat (lambda (g)
(format " path:%s" g))
groups " or")
")")))
artno dirnam filenam)
(when (equal "" qstring)
@ -1530,10 +1557,14 @@ actually)."
(set-buffer (get-buffer-create nnir-tmp-buffer))
(erase-buffer)
(if groupspec
(message "Doing notmuch query %s on %s..." qstring groupspec)
(if groups
(message "Doing notmuch query %s on %s..."
qstring (mapconcat #'identity groups " "))
(message "Doing notmuch query %s..." qstring))
(when groups
(setq qstring (concat qstring pathquery)))
(let* ((cp-list `( ,nnir-notmuch-program
nil ; input from /dev/null
t ; output
@ -1571,10 +1602,7 @@ actually)."
(when (string-match article-pattern artno)
(when (not (null dirnam))
;; maybe limit results to matching groups.
(when (or (not groupspec)
(string-match groupspec dirnam))
(nnir-add-result dirnam artno "" prefix server artlist)))))
(nnir-add-result dirnam artno "" prefix server artlist))))
(message "Massaging notmuch output...done")