The former two provide fallbacks in case $PAGER or $EDITOR is not set (which
might be more common than you think, because they have to be set in
~/.xsession, not in the shell configuration!) while the latter tries to launch
a terminal emulator. The scripts are most prominently used in i3-nagbar, which
alerts the user when the configuration is broken for some reason. Also,
i3-sensible-terminal is used in the default configuration.
This commit does not rely on the shell supporting ${PAGER:-less} anymore, which
is not the case for 'fish'.
The configuration option does the same as the commandline parameter, except
it can be easily set by the user (e.g. you are using KDM and can't start a
session through ~/.xsession).
Signed-off-by: Michael Walle <michael@walle.cc>
From the source:
We need ev >= 4 for the following code. Since it is not *that* important
(it only makes sure that there are no i3-nagbar instances left behind) we
still support old systems with libev 3.
Instead of using a quoted string to specify the class / title, the assign
command now uses criteria, just like the for_window command or the command
scopes.
An example comes here:
# Assign all Chromium windows (including popups) to workspace 1: www
assign [class="^Chromium$"] → 1: www
# Make the main browser window borderless
for_window [class="^Chromium$" title=" - Chromium$"] border none
This gives you more control over the matching process due to various reasons:
1) Criteria work case-sensitive by default. Use the (?i) option if you want a
case-insensitive match, like this:
assign [class="(?i)^ChroMIUM$"] → 1
2) class and instance of WM_CLASS can now be matched separately. For example,
when starting urxvt -name irssi, xprop will report this:
WM_CLASS(STRING) = "irssi", "URxvt"
The first part of this is the instance ("irssi"), the second part is the
class ("URxvt").
An appropriate assignment looks like this:
assign [class="^URxvt$" instance="irssi"] → 2
3) You can now freely use a forward slash (/) in all strings since that is no
longer used to separate class from title (in-band signaling is bad, mhkay?).
