From cb186d25d73c9b594ef1f10a26f071163c021e83 Mon Sep 17 00:00:00 2001
From: Jaroslav Škarvada <jskarvad@redhat.com>
Date: Jul 08 2020 13:25:59 +0000
Subject: Fixed ctrl+space problem

  Resolves: rhbz#1854822

---

diff --git a/irssi-1.2.2-ctrl-space-fix.patch b/irssi-1.2.2-ctrl-space-fix.patch
new file mode 100644
index 0000000..63d2695
--- /dev/null
+++ b/irssi-1.2.2-ctrl-space-fix.patch
@@ -0,0 +1,38 @@
+From a0544571a80196e5b7705f56e6e2cbcdf7b4d80e Mon Sep 17 00:00:00 2001
+From: ailin-nemui <ailin-nemui@users.noreply.github.com>
+Date: Thu, 23 Apr 2020 21:45:15 +0200
+Subject: [PATCH] manually handle NUL unicode in g_utf8_get_next_char_validated
+
+A change in GLib 2.63 broke some assumptions in Irssi that the null-byte
+NUL / U+0000 is a valid Unicode character. This would occur when the
+user types Ctrl+Space. As a result, the input loop never manages to
+process the NUL-byte (and any other user input that follows, ever).
+
+This patch adds a manual check that properly advances the input loop if
+GLib returns -2 (incomplete character) despite the length being positive
+and a NUL is in first position.
+
+Fixes #1180
+https://gitlab.gnome.org/GNOME/glib/-/merge_requests/967
+https://gitlab.gnome.org/GNOME/glib/-/issues/2093
+---
+ src/fe-text/term-terminfo.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/fe-text/term-terminfo.c b/src/fe-text/term-terminfo.c
+index 5235f72d2..78496a64f 100644
+--- a/src/fe-text/term-terminfo.c
++++ b/src/fe-text/term-terminfo.c
+@@ -672,7 +672,11 @@ void term_stop(void)
+ 
+ static int input_utf8(const unsigned char *buffer, int size, unichar *result)
+ {
+-	unichar c = g_utf8_get_char_validated((char *)buffer, size);
++	unichar c = g_utf8_get_char_validated((char *) buffer, size);
++
++	/* GLib >= 2.63 do not accept Unicode NUL anymore */
++	if (c == (unichar) -2 && *buffer == 0 && size > 0)
++		c = 0;
+ 
+ 	switch (c) {
+ 	case (unichar)-1:
diff --git a/irssi.spec b/irssi.spec
index c939d5d..75bfde4 100644
--- a/irssi.spec
+++ b/irssi.spec
@@ -3,7 +3,7 @@
 Summary:	Modular text mode IRC client with Perl scripting
 Name:		irssi
 Version:	1.2.2
-Release:	4%{?dist}
+Release:	5%{?dist}
 
 License:	GPLv2+
 URL:		http://irssi.org/
@@ -15,7 +15,9 @@ BuildRequires:	autoconf automake libtool utf8proc-devel libotr-devel
 Requires:	perl(:MODULE_COMPAT_%(eval "`%{__perl} -V:version`"; echo $version))
 
 # rhbz#1773190
-Obsoletes:      irc-otr
+Obsoletes:	irc-otr
+# https://github.com/irssi/irssi/pull/1183
+Patch:		irssi-1.2.2-ctrl-space-fix.patch
 
 %package devel
 Summary:	Development package for irssi
@@ -36,6 +38,8 @@ being maintained.
 
 %prep
 %setup -q
+%patch0 -p1 -b .ctrl-space-fix
+
 
 %build
 autoreconf -i
@@ -83,6 +87,10 @@ chmod -R u+w $RPM_BUILD_ROOT%{perl_vendorarch}
 
 
 %changelog
+* Wed Jul  8 2020 Jaroslav Škarvada <jskarvad@redhat.com> - 1.2.2-5
+- Fixed ctrl+space problem
+  Resolves: rhbz#1854822
+
 * Mon Jun 22 2020 Jitka Plesnikova <jplesnik@redhat.com> - 1.2.2-4
 - Perl 5.32 rebuild