# -*- mode: snippet -*-
# name: guix-commit-message-update-package
# key: update
# condition: git-commit-mode
# --

gnu: ${1:`(with-temp-buffer
           (magit-git-wash #'magit-diff-wash-diffs
             "diff" "--staged")
           (goto-char (point-min))
           (when (re-search-forward "(define-public \\(\\S-+\\)" nil 'noerror)
             (match-string-no-properties 1)))`}: Update to ${2:`(with-temp-buffer
    (magit-git-wash #'magit-diff-wash-diffs
      "diff" "--staged")
    (goto-char (point-min))
    (search-forward "name" nil 'noerror)
    (search-forward "+" nil 'noerror)   ; first change
    (when (and (search-forward "version " nil 'noerror)
               (looking-at-p "\""))
      (let ((end (save-excursion (search-forward "\")" nil 'noerror))))
        (when end
          (forward-char)
          (buffer-substring-no-properties (point) (- end 2))))))`}.

* `(car (magit-staged-files))` ($1): Update to $2.$0
`(mapconcat (lambda (file) (concat "* " file)) (cdr (magit-staged-files)) "\n")`/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=e57aa31680d484d04747ba66bce2c4b30938499e'>refs</a><a class='active' href='/guix/log/gnu/packages/rsync.scm'>log</a><a href='/guix/tree/gnu/packages/rsync.scm?id=e57aa31680d484d04747ba66bce2c4b30938499e'>tree</a><a href='/guix/commit/gnu/packages/rsync.scm?id=e57aa31680d484d04747ba66bce2c4b30938499e'>commit</a><a href='/guix/diff/gnu/packages/rsync.scm?id=e57aa31680d484d04747ba66bce2c4b30938499e'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/rsync.scm'>
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<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=e57aa31680d484d04747ba66bce2c4b30938499e'>root</a>/<a href='/guix/log/gnu?id=e57aa31680d484d04747ba66bce2c4b30938499e'>gnu</a>/<a href='/guix/log/gnu/packages?id=e57aa31680d484d04747ba66bce2c4b30938499e'>packages</a>/<a href='/guix/log/gnu/packages/rsync.scm?id=e57aa31680d484d04747ba66bce2c4b30938499e'>rsync.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/rsync.scm?id=e57aa31680d484d04747ba66bce2c4b30938499e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-03-21 03:09:51 +0100'>2020-03-21</span></td><td><a href='/guix/commit/gnu/packages/rsync.scm?id=acf2b20069b1f74b59185292d981024eea4d7055'>gnu: rsync: Use system zlib and popt libraries.</a><span class='msg-avail'>...<span class='msg-tooltip'>Reduce our likelihood of contracting security bugs at the expense of
compression ratio (in some cases) and compatibility with rsync≤3.1.1.

rsync@3.1.2 was released in 2014.  Time to upgrade your CentOS box.

* gnu/packages/rsync.scm (rsync)[inputs]: Add popt and zlib.
[arguments]: Use them.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-02-03 12:34:31 +0100'>2020-02-03</span></td><td><a href='/guix/commit/gnu/packages/rsync.scm?id=bf16482c8c48d301dae8b2be80e2fdf23c6fa8f0'>gnu: rsync: Fix cross-compilation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/rsync.scm (rsync)[inputs]: Move PERL ...
[native-inputs]: ... here.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-01-14 23:50:24 +0100'>2020-01-14</span></td><td><a href='/guix/commit/gnu/packages/rsync.scm?id=1385e86c259bcd7a8c86b656aa13518c1e544506'>gnu: rsync: Update home page.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/rsync.scm (rsync)[source, home-page]: Use HTTPS.
</span></span></td><td>Marius Bakke</td></tr>