From 80c266a76c7d558f6082620c88b223262784eca4 Mon Sep 17 00:00:00 2001
From: Fredrik Fornwall <fredrik@fornwall.net>
Date: Mon, 26 Sep 2016 18:18:43 -0400
Subject: [PATCH] man: Patch to adjust output width to terminal

Fixes https://github.com/termux/termux-app/issues/162
---
 packages/man/build.sh           |  2 +-
 packages/man/term_ascii.c.patch | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)
 create mode 100644 packages/man/term_ascii.c.patch

diff --git a/packages/man/build.sh b/packages/man/build.sh
index edfbed15..08f29eac 100644
--- a/packages/man/build.sh
+++ b/packages/man/build.sh
@@ -1,7 +1,7 @@
 TERMUX_PKG_HOMEPAGE=http://mdocml.bsd.lv/
 TERMUX_PKG_DESCRIPTION="Man page viewer from the mandoc toolset"
 TERMUX_PKG_VERSION=1.13.4
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_BUILD_REVISION=3
 TERMUX_PKG_SRCURL=http://mdocml.bsd.lv/snapshots/mdocml-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_DEPENDS="less,libandroid-glob,libsqlite"
 TERMUX_PKG_BUILD_IN_SRC=yes
diff --git a/packages/man/term_ascii.c.patch b/packages/man/term_ascii.c.patch
new file mode 100644
index 00000000..b0f07c57
--- /dev/null
+++ b/packages/man/term_ascii.c.patch
@@ -0,0 +1,38 @@
+The man implementation from mandoc does not adjust its output size to the terminal. As this is nice to have on smaller screens such as Termux we patch this in using the following patch adapted from
+
+https://groups.google.com/forum/#!topic/fa.openbsd.tech/AEDMaZmzSU4
+
+diff -u -r ../mdocml-1.13.4/term_ascii.c ./term_ascii.c
+--- ../mdocml-1.13.4/term_ascii.c	2016-07-14 07:13:40.000000000 -0400
++++ ./term_ascii.c	2016-09-26 18:06:08.339737451 -0400
+@@ -18,6 +18,7 @@
+ #include "config.h"
+ 
+ #include <sys/types.h>
++#include <sys/ioctl.h>
+ 
+ #include <assert.h>
+ #if HAVE_WCHAR
+@@ -64,12 +65,22 @@
+ 	char		*v;
+ #endif
+ 	struct termp	*p;
++	struct winsize	ws;
++	int		tfd;
+ 
+ 	p = mandoc_calloc(1, sizeof(struct termp));
+ 
+ 	p->line = 1;
+ 	p->tabwidth = 5;
+ 	p->defrmargin = p->lastrmargin = 78;
++	if ((tfd = open("/dev/tty", O_RDWR, 0)) != -1) {
++		if (ioctl(tfd, TIOCGWINSZ, &ws) != -1) {
++			if (ws.ws_col < 80)
++				p->defrmargin = p->lastrmargin = ws.ws_col - 2;
++		}
++		close(tfd);
++	}
++
+ 	p->fontq = mandoc_reallocarray(NULL,
+ 	     (p->fontsz = 8), sizeof(enum termfont));
+ 	p->fontq[0] = p->fontl = TERMFONT_NONE;
-- 
2.11.0