mirror of
https://github.com/fish-shell/fish-shell
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103 lines
3.6 KiB
Fish
103 lines
3.6 KiB
Fish
function fish_vi_cursor -d 'Set cursor shape for different vi modes'
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# Check hard if we are in a supporting terminal.
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#
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# Challenges here are term-in-a-terms (emacs ansi-term does not support this, tmux does),
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# that we can only figure out if we are in konsole/iterm/vte via exported variables,
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# and ancient xterm versions.
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#
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# tmux defaults to $TERM = screen, but can do this if it is in a supporting terminal.
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# Unfortunately, we can only detect this via the exported variables, so we miss some cases.
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#
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# We will also miss some cases of terminal-stacking,
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# e.g. tmux started in suckless' st (no support) started in konsole.
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# But since tmux in konsole seems rather common and that case so uncommon,
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# we will just fail there (though it seems that tmux or st swallow it anyway).
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#
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# We use the `tput` here just to see if terminfo thinks we can change the cursor.
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# We cannot use that sequence directly as it's not the correct one for konsole and iTerm,
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# and because we may want to change the cursor even though terminfo says we can't (tmux).
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if not tput Ss > /dev/null ^/dev/null
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# Whitelist tmux...
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and not begin
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set -q TMUX
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# ...in a supporting term...
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and begin set -q KONSOLE_PROFILE_NAME
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or set -q ITERM_PROFILE
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or test "$VTE_VERSION" -gt 1910
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end
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# .. unless an unsupporting terminal has been started in tmux inside a supporting one
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and begin string match -q "screen*" -- $TERM
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or string match -q "tmux*" -- $TERM
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end
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end
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and not string match -q "konsole*" -- $TERM
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# Blacklist
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or begin
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# vte-based terms set $TERM = xterm*, but only gained support relatively recently.
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set -q VTE_VERSION
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and test "$VTE_VERSION" -le 1910
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end
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or set -q INSIDE_EMACS
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return
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end
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set -l terminal $argv[1]
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set -q terminal[1]
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or set terminal auto
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set -l uses_echo
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set -l function
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switch "$terminal"
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case auto
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if set -q KONSOLE_PROFILE_NAME
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or set -q ITERM_PROFILE
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set function __fish_cursor_konsole
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set uses_echo 1
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else
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set function __fish_cursor_xterm
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set uses_echo 1
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end
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case konsole
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set function __fish_cursor_konsole
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set uses_echo 1
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case xterm
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set function __fish_cursor_xterm
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set uses_echo 1
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end
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set -l tmux_prefix
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set -l tmux_postfix
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if set -q TMUX
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and set -q uses_echo[1]
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set tmux_prefix echo -ne "'\ePtmux;\e'"
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set tmux_postfix echo -ne "'\e\\\\'"
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end
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set -q fish_cursor_unknown
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or set -g fish_cursor_unknown block blink
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echo "
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function fish_vi_cursor_handle --on-variable fish_bind_mode --on-event fish_postexec
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set -l varname fish_cursor_\$fish_bind_mode
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if not set -q \$varname
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set varname fish_cursor_unknown
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end
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$tmux_prefix
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$function \$\$varname
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$tmux_postfix
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end
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" | source
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echo "
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function fish_vi_cursor_handle_preexec --on-event fish_preexec
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set -l varname fish_cursor_default
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if not set -q \$varname
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set varname fish_cursor_unknown
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end
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$tmux_prefix
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$function \$\$varname
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$tmux_postfix
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end
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" | source
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end
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