app-misc/gtypist: update EAPI 7 -> 8, fix modern C issues

There's some fixes upstream but it's diverged a lot from the last release
10 years ago.

Closes: https://bugs.gentoo.org/875770
Signed-off-by: Sam James <sam@gentoo.org>

app-misc/gtypist/files/gtypist-2.9.5-c99.patch

@@ -0,0 +1,31 @@
+--- a/src/cursmenu.c
++++ b/src/cursmenu.c
+@@ -35,6 +35,8 @@
+ #include <ctype.h>
+ 
+ #include "gettext.h"
++#include "utf8.h"
++
+ #define _(String) gettext (String)
+ 
+ extern int isUTF8Locale;
+--- a/src/script.h
++++ b/src/script.h
+@@ -90,6 +90,7 @@ extern void seek_label( FILE *script, char *label, char *ref_line );
+ extern int hash_label( char *label );
+ extern void do_exit( FILE *script );
+ 
++void check_script_file_with_current_encoding( FILE *script );
+ 
+ extern void bind_F12 (const char *);	// Defined in gtypist.c
+ 
+--- a/src/utf8.c
++++ b/src/utf8.c
+@@ -18,6 +18,7 @@
+  */
+ 
+ #include "config.h"
++#include "error.h"
+ #include "utf8.h"
+ 
+ #ifdef HAVE_PDCURSES

app-misc/gtypist/gtypist-2.9.5-r2.ebuild

@@ -0,0 +1,84 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit elisp-common autotools
+
+DESCRIPTION="Universal typing tutor"
+HOMEPAGE="https://www.gnu.org/software/gtypist/"
+SRC_URI="
+	mirror://gnu/gtypist/${P}.tar.xz
+	http://colemak.com/pub/learn/colemak.typ
+"
+
+LICENSE="GPL-2 public-domain"
+SLOT="0"
+KEYWORDS="~amd64 ~arm64 ~ppc ~riscv ~x86 ~amd64-linux"
+IUSE="nls emacs xemacs"
+
+DEPEND="
+	>=sys-libs/ncurses-5.2:0=
+	emacs? ( >=app-editors/emacs-23.1:* )
+	xemacs? ( !emacs? ( app-editors/xemacs app-xemacs/fsf-compat ) )
+"
+RDEPEND="${DEPEND}"
+
+SITEFILE=50${PN}-gentoo.el
+
+src_unpack() {
+	unpack ${P}.tar.xz
+}
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.8.3-xemacs-compat.patch
+
+	# solution from https://bugs.gentoo.org/698764#c0
+	"${FILESDIR}"/${PN}-2.9.5-link-infow.patch
+
+	# Last release was 10 years ago but many commits in git since,
+	# looks fixed there but not backportable.
+	"${FILESDIR}"/${PN}-2.9.5-c99.patch
+)
+
+src_prepare() {
+	default
+	eautoreconf
+}
+
+src_configure() {
+	local lispdir=""
+	if use emacs; then
+		lispdir="${SITELISP}/${PN}"
+		einfo "Configuring to build with GNU Emacs support"
+	elif use xemacs; then
+		lispdir="${EPREFIX}/usr/lib/xemacs/site-packages/lisp/${PN}"
+		einfo "Configuring to build with XEmacs support"
+	fi
+
+	econf \
+		$(use_enable nls) \
+		EMACS=$(usev emacs || usev xemacs || echo no) \
+		--with-lispdir="${lispdir}"
+}
+
+DOCS=( AUTHORS ChangeLog NEWS README THANKS TODO )
+
+src_install() {
+	default
+
+	insinto /usr/share/gtypist
+	doins "${DISTDIR}"/colemak.typ
+
+	if use emacs; then
+		elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die
+	fi
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}