README


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

dwm - dynamic window manager
============================
dwm is an extremely fast, small, and dynamic window manager for X.


Requirements
------------
In order to build dwm you need the Xlib header files.


Installation
------------
Edit config.mk to match your local setup (dwm is installed into
the /usr/local namespace by default).

Afterwards enter the following command to build and install dwm (if
necessary as root):

    make clean install

If you are going to use the default bluegray color scheme it is highly
recommended to also install the bluegray files shipped in the dextra package.


Running dwm
-----------
Add the following line to your .xinitrc to start dwm using startx:

    exec dwm

In order to connect dwm to a specific display, make sure that
the DISPLAY environment variable is set correctly, e.g.:

    DISPLAY=foo.bar:1 exec dwm

(This will start dwm on display :1 of the host foo.bar.)

In order to display status info in the bar, you can do something
like this in your .xinitrc:

    while true
    do
        echo `date` `uptime | sed 's/.*,//'`
        sleep 1
    done | dwm


Configuration
-------------
The configuration of dwm is done by creating a custom config.h
and (re)compiling the source code.
-- State transitions while colorizing a single line.
-- Just for comments and strings.
-- Limitation: each fragment gets a uniform color so we can only change color
-- at word boundaries.
Next_state = {
  normal={
    {prefix='--[[', target='block_comment'},  -- only single-line for now
    {prefix='--', target='comment'},
    -- these don't mostly work well until we can change color within words
    -- {prefix='"', target='dstring'},
    -- {prefix="'", target='sstring'},
    {prefix='[[', target='block_string'},  -- only single line for now
  },
  dstring={
    {suffix='"', target='normal'},
  },
  sstring={
    {suffix="'", target='normal'},
  },
  block_string={
    {suffix=']]', target='normal'},
  },
  block_comment={
    {suffix=']]', target='normal'},
  },
  -- comments are a sink
}

Comment_color = {r=0, g=0, b=1}
String_color = {r=0, g=0.5, b=0.5}
Divider_color = {r=0.7, g=0.7, b=0.7}

Colors = {
  normal=Text_color,
  comment=Comment_color,
  sstring=String_color,
  dstring=String_color,
  block_string=String_color,
  block_comment=Comment_color,
}

Current_state = 'normal'

function initialize_color()
--?   print('new line')
  Current_state = 'normal'
end

function select_color(frag)
--?   print('before', '^'..frag..'$', Current_state)
  switch_color_based_on_prefix(frag)
--?   print('using color', Current_state, Colors[Current_state])
  App.color(Colors[Current_state])
  switch_color_based_on_suffix(frag)
--?   print('state after suffix', Current_state)
end

function switch_color_based_on_prefix(frag)
  if Next_state[Current_state] == nil then
    return
  end
  frag = rtrim(frag)
  for _,edge in pairs(Next_state[Current_state]) do
    if edge.prefix and starts_with(frag, edge.prefix) then
      Current_state = edge.target
      break
    end
  end
end

function switch_color_based_on_suffix(frag)
  if Next_state[Current_state] == nil then
    return
  end
  frag = rtrim(frag)
  for _,edge in pairs(Next_state[Current_state]) do
    if edge.suffix and ends_with(frag, edge.suffix) then
      Current_state = edge.target
      break
    end
  end
end