Re: Hi all
[notmuch-archives.git] / 1b / b09d03a913b3767e8d82bbf1b707402e94304d
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54 Sender: Michal Nazarewicz <mpn@google.com>\r
55 From: Michal Nazarewicz <mina86@mina86.com>\r
56 To: Jani Nikula <jani@nikula.org>, notmuch@notmuchmail.org\r
57 Subject: Re: [PATCH 1/6] emacs: add helper for tag change list manipulation\r
58 In-Reply-To:\r
59  <9dbf16fb95f40812ad246f95b954681bc895ceb2.1346614915.git.jani@nikula.org>\r
60 Organization: http://mina86.com/\r
61 References: <cover.1346614915.git.jani@nikula.org>\r
62         <9dbf16fb95f40812ad246f95b954681bc895ceb2.1346614915.git.jani@nikula.org>\r
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69 Date: Mon, 03 Sep 2012 13:33:55 +0200\r
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87 \r
88 --=-=-=\r
89 Content-Type: text/plain; charset=utf-8\r
90 Content-Transfer-Encoding: quoted-printable\r
91 \r
92 Jani Nikula <jani@nikula.org> writes:\r
93 > Add a helper to create (and optionally reverse) a list of tag changes.\r
94 > ---\r
95 >  emacs/notmuch-tag.el |   17 +++++++++++++++++\r
96 >  1 file changed, 17 insertions(+)\r
97 >\r
98 > diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el\r
99 > index 0c0fc87..c1aeb99 100644\r
100 > --- a/emacs/notmuch-tag.el\r
101 > +++ b/emacs/notmuch-tag.el\r
102 > @@ -140,6 +140,23 @@ notmuch-after-tag-hook will be run."\r
103 >    ;; in all cases we return tag-changes as a list\r
104 >    tag-changes)\r
105 >=20=20\r
106 > +(defun notmuch-tag-change-list (tags &optional reverse)\r
107 > +  "Convert TAGS into a list of tag changes.\r
108 > +\r
109 > +Add a \"+\" prefix to any tag in TAGS list that doesn't already\r
110 > +begin with a \"+\" or a \"-\". If REVERSE is non-nil, replace all\r
111 > +\"+\" prefixes with \"-\" and vice versa in the result."\r
112 > +  (mapcar (lambda (str)\r
113 > +         (let ((s (if (not (string-match "^[+-]" str))\r
114 > +                      (concat "+" str)\r
115 > +                    str)))\r
116 \r
117 (if (string-match "^[-+]" str) str (concat "+" str))\r
118 \r
119 Negation only makes things less readable IMO.\r
120 \r
121 > +           (if reverse\r
122 > +               (concat (if (=3D (string-to-char s) ?-) "+" "-")\r
123 > +                       (substring s 1))\r
124 > +             s)))\r
125 > +       tags))\r
126 > +\r
127 > +\r
128 >  ;;\r
129 >=20=20\r
130 >  (provide 'notmuch-tag)\r
131 \r
132 --=20\r
133 Best regards,                                         _     _\r
134 .o. | Liege of Serenely Enlightened Majesty of      o' \,=3D./ `o\r
135 ..o | Computer Science,  Micha=C5=82 =E2=80=9Cmina86=E2=80=9D Nazarewicz   =\r
136  (o o)\r
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