Submitted upstream at https://github.com/Swordfish90/cool-retro-term/issues/692

--- a/qmltermwidget/lib/TerminalCharacterDecoder.cpp	1969-12-31 18:00:01.000000000 -0600
+++ b/qmltermwidget/lib/TerminalCharacterDecoder.cpp	2021-12-27 22:07:04.452256118 -0600
@@ -19,6 +19,8 @@
     02110-1301  USA.
 */
 
+#include <cwctype>
+
 // Own
 #include "TerminalCharacterDecoder.h"
 
id='cgit'><table id='header'>
<tr>
<td class='logo' rowspan='2'><a href='/'><img src='https://git.koszko.org/cgit-static/cgit.png' alt='cgit logo'/></a></td>
<td class='main'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='aabfddbe8bc16fa82067e88e7d79c8c1bc802414'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>refs</a><a class='active' href='/guix/log/gnu/packages/patches/hplip-usb-timeout.patch'>log</a><a href='/guix/tree/gnu/packages/patches/hplip-usb-timeout.patch?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>tree</a><a href='/guix/commit/gnu/packages/patches/hplip-usb-timeout.patch?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>commit</a><a href='/guix/diff/gnu/packages/patches/hplip-usb-timeout.patch?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/patches/hplip-usb-timeout.patch'>
<input type='hidden' name='id' value='aabfddbe8bc16fa82067e88e7d79c8c1bc802414'/><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=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>root</a>/<a href='/guix/log/gnu?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>gnu</a>/<a href='/guix/log/gnu/packages?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>patches</a>/<a href='/guix/log/gnu/packages/patches/hplip-usb-timeout.patch?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414'>hplip-usb-timeout.patch</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/patches/hplip-usb-timeout.patch?id=aabfddbe8bc16fa82067e88e7d79c8c1bc802414&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-10-25 11:59:58 +0200'>2023-10-25</span></td><td><a href='/guix/commit/gnu/packages/patches/hplip-usb-timeout.patch?id=1e5ec9d853b89f6a142a4128e9fff6e2d48213d5'>gnu: hplip: Fix USB timeouts.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/hplip-usb-timeout.patch: New file.
* gnu/local.mk: Register it.
* gnu/packages/cups.scm (hplip): Use it.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Bruno Victal</td></tr>