include X11/keysym.h: improve compatibility with older systems

This matches dwm too.

This makes it compile cleanly on a tested Slackware 11 system.

fix: faulty zombie reaping

issues with the current signal handler:

1. die() isn't async-signal-safe
2. there's a race-window during reinstating the signal handler allowing
   zombies to be produced (should be rare in practice).
3. if waitpid fails, it will clobber the errno which can lead to
   undesired codepath being taken on the resuming code (this one can
   actually occur in practice).

to reproduce the 3rd issue:

	~> ./tabbed &
	[1] 20644
	0x1800003
	~> while :; do kill -s SIGCHLD 20644; done >&2 2>/dev/null
	XIO:  fatal IO error 10 (No child processes) on X server ":0"
	      after 47 requests (47 known processed) with 0 events remaining.
	[1]  + exit 1     ./tabbed

set the signal handler to SIG_IGN to reap zombies automatically
(according to POSIX.1-2001).

NOTE: this patch follows dwm's commit 712d663. according to the manpage,
none of the sa_flags being set are meaningful since we're using SIG_IGN.
they used to be meaningful on earlier version of the patch where it was
using SIG_DFL, i've kept them here just in case.

Fixed crash when window height was less or equal to bar height

When resizing, the embedded client is being resized to (height = wh - bh),
which is (<= 0) if (wh <= bh). This generates a BadValue Error leading to a
crash.  This patch fixes that by hiding the tab bar if the window height is too
small, and also sets a min_height WM hint to prevent that situation from
happening in the first place.

Fix movetab and focusurgent when there's no client

Accessing those would crash with a floating point exception.

One killclient() is enough.

add -k to close tabbed foreground client on WMDelete

Hello, this is useful when you want to use the same key binding that closes windows to close tabs. I got tired of loosing my tabbed/surf session when I hit my WM's close key. "Last tab" behavior still respects -c/-f.

Cheers
-J

From 829e95855f0fe78a368788a5e72231bd6456a8cf Mon Sep 17 00:00:00 2001
From: jakeogh <github.com@v6y.net>
Date: Mon, 21 Mar 2016 01:36:28 +0000
Subject: [PATCH] add -k to close foreground tabbed client on WM_DELETE_WINDOW

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Added xft support

Based on xft tabbed patch from the wiki.

Signed-off-by: Lucas Gabriel Vuotto <l.vuotto92@gmail.com>
Signed-off-by: Christoph Lohmann <20h@r-36.net>

Add configuration option for title truncation string

Permit to use arbitrary string instead of "..." (ie "$") when truncating
client title.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Remove h flag, put usage() in the default case

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Arrange diagnostic messages

Fix error messages to use argv0 instead of fixed “tabbed”.
Break usage message into multiple lines.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Style cleanup

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Bumping up the year.

Thanks for the bug report, FRIGN!

Bump year.

autofocus urgent tabs

When tabbed becomes urgent because one of it tabs becomes urgent, it
may be desireable to automatically focus that tab. As a notification may
be lost, if another notification comes in before you focused tabbed, the
switch is only done, if tabbed is not urgent already.
Moreover, it may be anoying, if you just type into one tab, another tab
gets urgent -therfore focused- and you type into the other tab, you may
switch between autofocus and nofocus using Ctrl-Shift-u.
Maybe it would also be usefull, if there would be an commandline
parameter to toggle that option, but as -u is already used for
urgent-tab-color, i did not implement that.

Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Signed-off-by: Christoph Lohmann <20h@r-36.net>

focus urgent tabs

With a lot of open tabs its quite annoying to toggle through all tabs
until reaching the next one with an urgent hint set. Also with using
Ctrl-[0..9] to get to the first 10 tabs, in some cases this may have
disadvantages:
1. with more than 10 tabs, you can not use that quickselection
2. with a small tabbed window, you do not see every tab in the
   statusbar and therefore do not know which tab got urgent

Therefore I created a function, which iterates over all currently
managed tabs, focus the first urgent tab found or stays at the current
tab, if there is no urgent-tab. By default, that function is mapped to
Ctrl-u.

Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Signed-off-by: Christoph Lohmann <20h@r-36.net>

fix bug in unmanage: check if lastsel is initialized

Signed-off-by: Christoph Lohmann <20h@r-36.net>

revise drawbar and related mechanisms.

This also fixes a bug, where the last tab was hidden and no "after" text was
displayed.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

movetab(): Move selected tab instead of switching

Before this patch, movetab() just switched positions of the selected tab with
the new position. This resulted in unexpected behaviour when „moving“ a tab over
one end of the list.

Now tabs are moved correctly by the specified amount of indizes.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

tabbed: UnmapNotify patch

Hi,

Simple patch for tabbed that prevents tabbed from killing a client that it
should no longer be managing due to an UnmapNotify event.

Add support for UnmapNotify; allows a window to map and unmap without
needing it to be destroyed.

Thanks,
Okan

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Clear urgency hint on sel == c

 - Run "tabbed xterm -into".
 - Open a new tab using Ctrl+Shift+Enter, switch to it using Ctrl+Tab.
 - Run "sleep 2; printf '\a'".
 - Quickly change back to the first tab (c = 0) and wait for the second
   one (c = 1) to get the urgency hint.
 - Close the first tab using Ctrl+Q or Ctrl+D. This sets sel = 0 and c =
   0, so focus() won't touch the urgency hint.
 - Now, the urgency hint on the second tab has not been cleared. Open a
   new tab to verify it.

Signed-off-by: Christoph Lohmann <20h@r-36.net>