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THE FORMAT OF THEME FILES
-------------------------
A theme is a collection of attributes of various UI elements. Each
theme is contained in a file with a "thm" extension.
Each line of a theme file, unless blank or preceded with "#" (which
makes it a comment), is of the syntax:
element_name = [fg_color | special] [, bg_color | special] [, special]
"color" may be any of:
black gray
red brightred
green brightgreen
brown yellow
blue brightblue
magenta brighmagenta
cyan brightcyan
lightgray white
(Because of terminal restrictions, those in the second column cannot
serve as background colors).
"special" may be any of
bold +bold
underline +underline
reverse +reverse
normal
default
"default" stands for the default color of the terminal. This can be
either the foreground or the background color, depending on where it's
used.
There are tens of elements, but thanks to an inheritance mechanism it's
only necessary to specify few of them. Those elements not specified in a
theme file inherit their attributes from a predetermined "parent"
element. This inheritance also takes place when only a background (or a
foreground) color is missing.
The following is a list of the available UI elements and their descriptions.
The indentations show the hierarchical structure of the inheritance.
menu pull-down menu color
menu.frame menu frames
menu.selected selected menu item
menu.letter item hot key
menu.letter.selected (bg: menu.selected) item hot key, when selected
menu.indicator menu indicators
menu.indicator.selected (bg: menu.selected) menu indicators, selected
menubar menubar
scrollbar.thumb the thumb of the scrollbar
statusline the status-line
edit the main edit box
dialogline the dialog-line
scrollbar the scrollbar
edit.failed-conversion characters not represented
in screen encoding.
edit.control control characters
(usually U+0000 to U+0031)
edit.eop end of paragraph symbol
edit.unicode-ls Unicode line separator
edit.tab tab characters
edit.explicit-bidi explicit bidi marks
edit.maqaf Hebrew maqaf, when highlighted
edit.nsm non spacing marks (NSM)
edit.nsm.hebrew Hebrew NSM (niqqud)
edit.nsm.cantillation cantillation marks
edit.nsm.arabic Arabic NSM (harakat)
edit.wide wide Asian characters
edit.trim the trim symbol ("$")
edit.wrap the wrap symbol ("\")
edit.selected selected text
edit.html-tag highlighted HTML tags
edit.emphasized highlighted *text* and _text_
edit.links links in the User Manual
edit.email-quote1 email quotes, level 1
edit.email-quote2 email quotes, level 2
edit.email-quote3 email quotes, level 3
... ...
edit.email-quote9 email quotes, level 9
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