Package: apt
Version: 1.1~exp8
Severity: wishlist
Tags: patch
Apt's progress reporting uses escape sequences from DOS' ANSI.SYS to
save/restore the cursor position. I know of at least one terminal that
doesn't recognize those.
The attached patch switches to the DECSC/DECRC[0] escape sequences,
which, from a brief canvas of terminfo, are the dominant sequences
used.
5 sc=^],
19 sc=\036F}10,
1 sc=^B,
1 sc=~^E,
446 sc=\E7,
8 sc=\Ej,
18 sc=\E[s,
3 sc=\E[%y,
5 rc=^\,
19 rc=\036F}11,
1 rc=^C,
1 rc=\E7,
556 rc=\E8,
8 rc=\Ek,
4 rc=\E[r,
18 rc=\E[u,
6 rc=\E[%z,
[0]: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
-- Package-specific info:
-- (no /etc/apt/preferences present) --
-- (/etc/apt/sources.list present, but not submitted) --
-- System Information:
Debian Release: 8.0
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages apt depends on:
ii adduser 3.113+nmu3
ii debian-archive-keyring 2014.3
ii gnupg 1.4.18-6
ii gnupg2 2.0.26-3
ii libapt-pkg4.15 1.1~exp8
ii libc6 2.19-13
ii libgcc1 1:4.9.2-5
ii libstdc++6 4.9.2-5
apt recommends no packages.
Versions of packages apt suggests:
pn apt-doc <none>
ii aptitude 0.6.11-1+b1
ii dpkg-dev 1.17.22
ii python-apt 0.9.3.11
-- no debconf information
>From 0aedede7fc2f5739891e7ba68b6f9ab8f03c4635 Mon Sep 17 00:00:00 2001
From: James McCoy <james...@debian.org>
Date: Sun, 7 Dec 2014 22:15:36 -0500
Subject: [PATCH] Use terminfo's typical save_cursor/restore_cursor sequences
Not all terminals understand DOS' escape sequences for save/restore
cursor, so use the more typical sequences from terminfo.
Signed-off-by: James McCoy <james...@debian.org>
---
apt-pkg/install-progress.cc | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/apt-pkg/install-progress.cc b/apt-pkg/install-progress.cc
index 5ea8bf4..736b9e2 100644
--- a/apt-pkg/install-progress.cc
+++ b/apt-pkg/install-progress.cc
@@ -285,13 +285,13 @@ void PackageManagerFancy::SetupTerminalScrollArea(int nr_rows)
std::cout << "\n";
// save cursor
- std::cout << "\033[s";
+ std::cout << "\0337";
// set scroll region (this will place the cursor in the top left)
std::cout << "\033[0;" << nr_rows - 1 << "r";
// restore cursor but ensure its inside the scrolling area
- std::cout << "\033[u";
+ std::cout << "\0338";
static const char *move_cursor_up = "\033[1A";
std::cout << move_cursor_up;
@@ -373,8 +373,8 @@ bool PackageManagerFancy::DrawStatusLine()
if (unlikely(size.rows < 1 || size.columns < 1))
return false;
- static std::string save_cursor = "\033[s";
- static std::string restore_cursor = "\033[u";
+ static std::string save_cursor = "\0337";
+ static std::string restore_cursor = "\0338";
// green
static std::string set_bg_color = DeQuoteString(
--
2.1.3
