## Configuring rules

### General description

Not all windows should be managed by bug.n the same way, or even may not be
managable at all. To handle windows differently, you can add rules to the
configuration.

With the first part of the rule, you identify the window using the
following information:

1. class (as a regular expression)
2. title (as a regular expression)
3. arbitrary criterion (as a function name, e. g. "Window_isPopup", or blank)

With the second part you can give bug.n the following information on how to
handle the identified windows:

1. Is the window managed at all (0 = no, 1 = yes)?
2. On which monitor should the window be moved (given as an integer >= 0,
0 means the currently active monitor)?
3. On which views should the window be set (given as a binary mask converted to
an integer >= 0, 0 means the currently active view)?
4. Is the window floating, i. e. should not be tiled (0 = no, 1 = yes)?
5. Is the window decorated (0 = no, 1 = yes)? If not, the window title bar is
removed.
6. Should the title text be hidden in the bug.n bar (0 = no, 1 = yes)?
7. A special single window action (`close` or `maximize` or blank).

The general format of a rule added to `Config.ini` is as follows:
`Config_rule=<class>;<title>;<function name>;<is managed>;<monitor>;<views /
tags>;<is floating>;<is decorated>;<hide title>;<action on a single window>`
(all in one line, ";" is not allowed as a character in the field values)

If you want to replace a rule, which is already set in `Config.ahk`, you will
have to use the correct variable name; e. g. you may set a default rule
(identifying part: `.*;.*;`), overwriting the first rule set in `Config.ahk`,
by using the variable name `Config_rule_#1`. If you want to _add_ a rule,
simply use `Config_rule` as the variable name; the numbering will be done
automatically by bug.n when reading `Config.ini` using the order given there.

#### Views / Tags

You can set a window to more than one view. Add up the associated numbers as
shown in the following table and set the sixth field of the rule to the value
of the sum.

| view / tag       |   1 |   2 |   3 |   4 |   5 |   6 |   7 |   8 |   9 |              n | all |
| ---------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- | -------------- | --- |
| number to sum up |   1 |   2 |   4 |   8 |  16 |  32 |  64 | 128 | 256 | `2 ** (n - 1)` | 511 |

An example would be the value `17` for views 1 and 5.

### Examples

#### Mozilla Firefox

The following `Config.ini` line replaces rule number 16 in the default
configuration, putting windows of 'Mozilla Firefox' on view 5, keeping the
title bar visible and maximizing them.

`Config_rule_#16=MozillaWindowClass;.*Mozilla Firefox;;1;0;16;0;1;0;maximize`

#### Mozilla Thunderbird

The following `Config.ini` line adds a rule, putting windows of 'Mozilla
Thunderbird' on view 4, keeping the title bar visible and maximizing them.

`Config_rule=MozillaWindowClass;.*Mozilla Thunderbird;;1;0;8;0;1;0;maximize`

#### GNU Emacs

The following rule avoids the gaps, which would be the result of Emacs'
line-oriented resizing of its own windows (frames).

`Config_rule=Emacs;.*;;1;0;0;0;0;0;maximize`