Change formatting of colorscheme doc to markdown

Makes the file easier to read in github while still maintaining the
current easy-to-read format found in the raw file

2 files changed, 77 insertions, 92 deletions

diff --git a/doc/colorschemes.md b/doc/colorschemes.md
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+# Colorschemes
+
+This text explains colorschemes and how they work.
+
+## Context Tags
+
+Context Tags provide information about the context. If the tag `in_titlebar` is
+set, you probably want to know about the color of a part of the titlebar now.
+
+There are a number of context tags, specified in /ranger/gui/context.py in the
+constant `CONTEXT_KEYS`.
+
+A Context object, defined in the same file, contains attributes with the names
+of all tags, whose values are either True or False.
+
+## Implementation in the GUI Classes
+
+The class CursesShortcuts in the file `/ranger/gui/curses_shortcuts.py` defines
+the methods `color(*tags)`, `color_at(y, x, wid, *tags)` and `color_reset()`.
+This class is a superclass of Displayable, so these methods are available almost
+everywhere.
+
+Something like `color("in_titlebar", "directory")` will be called to get the
+color of directories in the titlebar. This creates a `ranger.gui.context.Context`
+object, sets its attributes `in_titlebar` and `directory` to True, leaves the
+others as False, and passes it to the colorscheme's `use(context)` method.
+
+## The Color Scheme
+
+A colorscheme should be a subclass of `ranger.gui.ColorScheme` and define the
+method `use(context)`. By looking at the context, this use-method has to
+determine a 3-tuple of integers: `(foreground, background, attribute)` and return
+it.
+
+`foreground` and `background` are integers representing colors, `attribute` is
+another integer with each bit representing one attribute. These integers are
+interpreted by the used terminal emulator.
+
+Abbreviations for colors and attributes are defined in `ranger.gui.color`. Two
+attributes can be combined via bitwise OR: bold | reverse
+
+Once the color for a set of tags is determined, it will be cached by default. If
+you want more dynamic colorschemes (such as a different color for very large
+files), you will need to dig into the source code, perhaps add an own tag and
+modify the draw-method of the widget to use that tag.
+
+Run `tc_colorscheme` to check if your colorschemes are valid.
+
+## Specify a Colorscheme
+
+Colorschemes are searched for in these directories:
+
+- `~/.config/ranger/colorschemes/`
+- `/path/to/ranger/colorschemes/`
+
+To specify which colorscheme to use, change the option `colorscheme` in your
+rc.conf: `set colorscheme default`.
+
+This means, use the colorscheme contained in either
+`~/.config/ranger/colorschemes/default.py` or
+`/path/to/ranger/colorschemes/default.py`.
+
+## Adapt a colorscheme
+
+You may want to adapt a colorscheme to your needs without having a complete copy
+of it, but rather the changes only. Say, you want the exact same colors as in
+the default colorscheme, but the directories to be green rather than blue,
+because you find the blue hard to read.
+
+This is done in the jungle colorscheme `ranger/colorschemes/jungle`, check it
+out for implementation details. In short, I made a subclass of the default
+scheme, set the initial colors to the result of the default `use()` method and
+modified the colors how I wanted.
+
+This has the obvious advantage that you need to write less, which results in
+less maintenance work and a greater chance that your colorscheme will work with
+future versions of ranger.
diff --git a/doc/colorschemes.txt b/doc/colorschemes.txt
deleted file mode 100644
index 145cc94e..00000000
--- a/doc/colorschemes.txt
+++ /dev/null
@@ -1,92 +0,0 @@
-Colorschemes
-============
-
-This text explains colorschemes and how they work.
-
-
-Context Tags
-------------
-
-Context Tags provide information about the context.  If the tag
-"in_titlebar" is set, you probably want to know about the color
-of a part of the titlebar now.
-
-There are a number of context tags, specified in /ranger/gui/context.py
-in the constant CONTEXT_KEYS.
-
-A Context object, defined in the same file, contains attributes with
-the names of all tags, whose values are either True or False.
-
-
-Implementation in the GUI Classes
----------------------------------
-
-The class CursesShortcuts in the file /ranger/gui/curses_shortcuts.py
-defines the methods color(*tags), color_at(y, x, wid, *tags) and
-color_reset().  This class is a superclass of Displayable, so these
-methods are available almost everywhere.
-
-Something like color("in_titlebar", "directory") will be called to
-get the color of directories in the titlebar.  This creates a
-ranger.gui.context.Context object, sets its attributes "in_titlebar" and
-"directory" to True, leaves the others as False, and passes it to the
-colorscheme's use(context) method.
-
-
-The Color Scheme
-----------------
-
-A colorscheme should be a subclass of ranger.gui.ColorScheme and
-define the method use(context).  By looking at the context, this use-method
-has to determine a 3-tuple of integers: (foreground, background, attribute)
-and return it.
-
-foreground and background are integers representing colors,
-attribute is another integer with each bit representing one attribute.
-These integers are interpreted by the used terminal emulator.
-
-Abbreviations for colors and attributes are defined in ranger.gui.color.
-Two attributes can be combined via bitwise OR: bold | reverse
-
-Once the color for a set of tags is determined, it will be cached by
-default.  If you want more dynamic colorschemes (such as a different
-color for very large files), you will need to dig into the source code,
-perhaps add an own tag and modify the draw-method of the widget to use
-that tag.
-
-Run tc_colorscheme to check if your colorschemes are valid.
-
-
-Specify a Colorscheme
----------------------
-
-Colorschemes are searched for in these directories:
-~/.config/ranger/colorschemes/
-/path/to/ranger/colorschemes/
-
-To specify which colorscheme to use, change the option "colorscheme"
-in your rc.conf:
-set colorscheme default
-
-This means, use the colorscheme contained in
-either ~/.config/ranger/colorschemes/default.py or
-/path/to/ranger/colorschemes/default.py.
-
-
-Adapt a colorscheme
--------------------
-
-You may want to adapt a colorscheme to your needs without having
-a complete copy of it, but rather the changes only.  Say, you
-want the exact same colors as in the default colorscheme, but
-the directories to be green rather than blue, because you find the
-blue hard to read.
-
-This is done in the jungle colorscheme ranger/colorschemes/jungle,
-check it out for implementation details.  In short, I made a subclass
-of the default scheme, set the initial colors to the result of the
-default use() method and modified the colors how I wanted.
-
-This has the obvious advantage that you need to write less, which
-results in less maintenance work and a greater chance that your colorscheme
-will work with future versions of ranger.