debugger: use NO_COLOR to disable coloring

tsafin · igormunkin · commit 1163aa056398 · 2022-10-19T13:12:11.000+03:00
Do not use non-standard DBG_NOCOLOR, but use NO_COLOR [^1] for disabling color output on terminals. [^1]: https://no-color.org/ NO_DOC=later NO_CHANGELOG=internal NO_TEST=internal
diff --git a/third_party/lua/README-luadebug.md b/third_party/lua/README-luadebug.md
@@ -110,7 +110,7 @@ There are also some goodies you can use to make debugging easier.
 Environment Variables:
 -
 
-Want to disable ANSI color support or disable GNU readline? Set the `DBG_NOCOLOR` and/or `DBG_NOREADLINE` environment variables.
+Want to disable ANSI color support or disable GNU readline? Set the `NO_COLOR`.
 
 Known Issues:
 -
diff --git a/third_party/lua/luadebug.lua b/third_party/lua/luadebug.lua
@@ -750,7 +750,7 @@ local stdout_isatty = ffi.C.isatty(1)
 
 -- Conditionally enable color support.
 local color_maybe_supported = (stdout_isatty and os.getenv("TERM") and os.getenv("TERM") ~= "dumb")
-if color_maybe_supported and not os.getenv("DBG_NOCOLOR") then
+if color_maybe_supported and not os.getenv("NO_COLOR") then
     COLOR_GRAY = string.char(27) .. "[90m"
     COLOR_RED = string.char(27) .. "[91m"
     COLOR_BLUE = string.char(27) .. "[94m"

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ There are also some goodies you can use to make debugging easier.`
`110`	`110`	`Environment Variables:`
`111`	`111`	`-`
`112`	`112`
`113`		-Want to disable ANSI color support or disable GNU readline? Set the `DBG_NOCOLOR` and/or `DBG_NOREADLINE` environment variables.
	`113`	+Want to disable ANSI color support or disable GNU readline? Set the `NO_COLOR`.
`114`	`114`
`115`	`115`	`Known Issues:`
`116`	`116`	`-`