Somehow, Aspell 0.60.6.1 and aspell-dict-en-2016.11.20-0 don't consider
this a valid spelling.  Skip it.

TODO: Migrate to using hunspell. According to upstream, this bug won't be fixed.
See https://bugzilla.gnome.org/show_bug.cgi?id=772406.
--- a/testsuite/test-checker.c	2017-03-24 09:50:50.000000000 -0400
+++ b/testsuite/test-checker.c	2017-06-15 21:47:07.116173895 -0400
@@ -105,10 +105,11 @@
 	 * be considered deprecated, it is better to use hunspell, so WONTFIX.
 	 * For more details, see:
 	 * https://bugzilla.gnome.org/show_bug.cgi?id=772406
+	 *
+	 * correctly_spelled = gspell_checker_check_word (checker, "spell-checking", -1, &error);
+	 * g_assert_no_error (error);
+	 * g_assert (correctly_spelled);
 	 */
-	correctly_spelled = gspell_checker_check_word (checker, "spell-checking", -1, &error);
-	g_assert_no_error (error);
-	g_assert (correctly_spelled);
 
 	correctly_spelled = gspell_checker_check_word (checker, "nrst-auie", -1, &error);
 	g_assert_no_error (error);
d></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>refs</a><a class='active' href='/guix/log/gnu/packages/acl.scm'>log</a><a href='/guix/tree/gnu/packages/acl.scm?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>tree</a><a href='/guix/commit/gnu/packages/acl.scm?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>commit</a><a href='/guix/diff/gnu/packages/acl.scm?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/acl.scm'>
<input type='hidden' name='id' value='6feb86f442e6ec53de0c4bd9d129915881c3bc51'/><select name='qt'>
<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=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>root</a>/<a href='/guix/log/gnu?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>gnu</a>/<a href='/guix/log/gnu/packages?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>packages</a>/<a href='/guix/log/gnu/packages/acl.scm?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51'>acl.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/acl.scm?id=6feb86f442e6ec53de0c4bd9d129915881c3bc51&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2018-03-16 06:44:18 -0400'>2018-03-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=c0d56bb227799537f9715668be793cd9cfe3d251'>gnu: acl: Use invoke instead of system*.</a><span class='msg-avail'>...</span></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-03-15 16:41:02 +0100'>2018-03-15</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=4403030b7de2485dbeb6ee54c56551a2bd2b5244'>gnu: acl: Fix build failure.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-02-16 13:14:26 -0500'>2018-02-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=150062f19060687dbf8e2cbe6a22c2f8600e7c4e'>Merge branch 'master' into core-updates</a></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-02-16 11:11:40 +0100'>2018-02-16</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=340978d7b054dcde6c3334267b40a8293eb0ce85'>gnu: Use HTTPS for supported nongnu.org home pages.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-11-09 19:49:06 +0200'>2017-11-09</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=0f1adf454d5fa96291b94dbdbd34640b8c581116'>gnu: acl: Fix test regression with perl-5.26.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2017-11-04 13:09:06 -0400'>2017-11-04</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=7183c4bf570b09277f82c6487566e81d88ae2fcb'>gnu: acl: Fix typo.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-11-04 10:47:39 -0400'>2017-11-04</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=2d433b5363fecba0d63caa1844c937dec4ccc23b'>gnu: acl: Enable tests.</a><span class='msg-avail'>...</span></td><td>Kei Kebreau</td></tr>
<tr><td><span title='2017-10-19 09:04:42 +0300'>2017-10-19</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=79272039a9586aef8105007900b62dcb4b00ca9b'>gnu: acl: Use 'modify-phases' syntax.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>