Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//etc/default/im-config

 # Default im-config mode (see im-config(8))

OLDIFS="$IFS"
IFS=':'
desktop=
for val in $XDG_CURRENT_DESKTOP; do
    for d in 'Unity' 'MATE' 'GNOME'; do
        [ "$d" = "$val" ] && { desktop="$d"; break 2; }
    done
done
IFS="$OLDIFS"

if [ -n "$desktop" ]; then
    # Start best input method unless overridden below
    IM_CONFIG_DEFAULT_MODE=auto
else
    # Start best input method only if CJKV environment and not overridden below
    IM_CONFIG_DEFAULT_MODE=cjkv
fi

# Set locale dependent preferred IM over standard auto mode
if [ "$desktop" != 'GNOME' -a "${XDG_CURRENT_DESKTOP%%:*}" != 'GNOME-Flashback' ]; then
    IM_CONFIG_PREFERRED_RULE="zh_CN,fcitx:zh_TW,fcitx:zh_HK,fcitx:zh_SG,fcitx:ja_JP,fcitx:ko_KR,fcitx:vi_VN,fcitx"
fi

# User and system wide configuration is normally done via im-config program.
# The above IM_CONFIG_PREFERRED_RULE sets locale dependent preferred IM
# override rule.  If you wish to use uim over ibus just for ja_JP,
# add :ja_JP,uim at the end of the above list.

# Trace commands for debug
# (This may cause problem configuration file generated under console mode)
#IM_CONFIG_SETMODE="-x"

# Verbose output for debug (uncomment following)
#IM_CONFIG_VERBOSE="true"