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fixes #403 Recogize more truecolor terminals properly 

(This just corrects the README to reflect reality.)
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Garrett D'Amore 2020-10-29 17:30:17 -07:00
parent 6314995119
commit 768da2b4f2
1 changed files with 23 additions and 11 deletions
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README.adoc
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@ -157,13 +157,29 @@ a ticket; it wouldn't be hard to add that if there is need.
_Tcell_ _supports true color_! (That is, if your terminal can support it, _Tcell_ _supports true color_! (That is, if your terminal can support it,
_Tcell_ can accurately display 24-bit color.) _Tcell_ can accurately display 24-bit color.)
To use 24-bit color, you need to use a terminal with support. Modern NOTE: Technically the approach of using 24-bit RGB values for color is more
XTerm and similar terminal emulators can support this. As terminfo lacks any accurately described as "direct color", but most people use the term "true color",
way to describe this capability, we fabricate the capability for and so we follow the (inaccurate) common convention.
terminals with names ending in `*-truecolor`. The stock distribution ships
with a database that defines `xterm-truecolor`. There are a few ways you can enable (or disable) true color.
To try it out, set your
`TERM` variable to `xterm-truecolor`. * For many terminals, we can detect it automatically if your terminal
includes the `RGB` or `Tc` capabilities (or rather it did when the database
was updated.)
* You can force this one by setting the `COLORTERM` environment variable to
"24-bit", "truecolor" or "24bit". This is the same method used
by most other terminal applications that support 24-bit color.
* If you set your `TERM` environment variable to a value with the suffix `-truecolor`
then 24-bit color compatible with XTerm will be assumed (and the terminal will
otherwise use the same escape sequences as the base terminal definition.)
NOTE: This feature is for compatibility with older _Tcell_ versions.
It is recommended to use one of other methods instead.
* You can disable 24-bit color by setting `TCELL_TRUECOLOR=disable` in your
environment.
When using TrueColor, programs will display the colors that the programmer When using TrueColor, programs will display the colors that the programmer
intended, overriding any "`themes`" you may have set in your terminal intended, overriding any "`themes`" you may have set in your terminal
@ -172,10 +188,6 @@ than respecting themes. For other cases, such as typical text apps that
only use a few colors, its more desirable to respect the themes that only use a few colors, its more desirable to respect the themes that
the user has established.) the user has established.)
If you find this undesirable, you can either use a `TERM` variable
that lacks the `TRUECOLOR` setting, or set `TCELL_TRUECOLOR=disable` in your
environment.
== Performance == Performance
Reasonable attempts have been made to minimize sending data to terminals, Reasonable attempts have been made to minimize sending data to terminals,