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terminal-util: use 256 color mode for PID 1 output, too 

Follow-up for: #17702

Alsoe, see earlier review comment: https://github.com/systemd/systemd/pull/17702#pullrequestreview-552329600
This commit is contained in:
Lennart Poettering 2020-12-16 19:55:32 +01:00 committed by Zbigniew Jędrzejewski-Szmek
parent 0ce96f4152
commit ddbf960574
1 changed files with 8 additions and 3 deletions
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11
src/basic/terminal-util.c
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@ -1240,9 +1240,14 @@ ColorMode get_color_mode(void) {
else if (getpid_cached() == 1)
/* PID1 outputs to the console without holding it open all the time.
* Also note the Linux console can only handle 16 colors.
*/
cached_color_mode = getenv_terminal_is_dumb() ? COLOR_OFF : COLOR_16;
*
* Note that the Linux console can only display 16 colors. We still enable 256 color
* mode even for PID1 output though (which typically goes to the Linux console),
* since the Linux console is able to parse the 256 color sequences and automatically
* map them to the closest color in the 16 color palette (since kernel 3.16). Doing
* 256 colors is nice for people who invoke systemd in a container or via a serial
* link or such, and use a true 256 color terminal to do so. */
cached_color_mode = getenv_terminal_is_dumb() ? COLOR_OFF : COLOR_256;
else
cached_color_mode = terminal_is_dumb() ? COLOR_OFF : COLOR_256;
}