dotfiles/modules/common/shell/fish/functions/fish_vi_cursor.fish

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2020-07-26 21:31:31 +00:00
#!/usr/local/bin/fish
function fish_vi_cursor -d 'Set cursor shape for different vi modes'
# If we're not interactive, there is effectively no bind mode.
if not status is-interactive
return
end
# This is hard to test in expect, since the exact sequences depend on the environment.
# Instead disable it.
if set -q FISH_UNIT_TESTS_RUNNING
return
end
# If this variable is set, skip all checks
if not set -q fish_vi_force_cursor
# Emacs Makes All Cursors Suck
if set -q INSIDE_EMACS
return
end
# vte-based terms set $TERM = xterm*, but only gained support in 2015.
# From https://bugzilla.gnome.org/show_bug.cgi?id=720821, it appears it was version 0.40.0
if set -q VTE_VERSION
and test "$VTE_VERSION" -lt 4000 2>/dev/null
return
end
# Similarly, genuine XTerm can do it since v280.
if set -q XTERM_VERSION
and not test (string replace -r "XTerm\((\d+)\)" '$1' -- "$XTERM_VERSION") -ge 280 2>/dev/null
return
end
# We need one of these terms.
# It would be lovely if we could rely on terminfo, but:
# - The "Ss" entry isn't a thing in macOS' old and crusty terminfo
# - It is set for xterm, and everyone and their dog claims to be xterm
#
# So we just don't care about $TERM, unless it is one of the few terminals that actually have their own entry.
#
# Note: Previous versions also checked $TMUX, and made sure that then $TERM was screen* or tmux*.
# We don't care, since we *cannot* handle term-in-a-terms 100% correctly.
if not set -q KONSOLE_PROFILE_NAME
and not test -n "$KONSOLE_VERSION" -a "$KONSOLE_VERSION" -ge 200400 # konsole, but new.
and not set -q ITERM_PROFILE
and not set -q VTE_VERSION # which version is already checked above
and not set -q WT_PROFILE_ID
and not set -q XTERM_VERSION
and not string match -rq '^st(-.*)$' -- $TERM
and not string match -q 'xterm-kitty*' -- $TERM
and not string match -q 'rxvt*' -- $TERM
and not string match -q 'alacritty*' -- $TERM
return
end
# HACK: Explicitly disable on ITERM because of #3696, which is weirdness with multi-line prompts.
# --force-iterm is now deprecated; set $fish_vi_force_cursor instead
if contains -- $argv[1] --force-iterm
set -e argv[1]
else if set -q ITERM_PROFILE
return
end
end
set -l terminal $argv[1]
set -q terminal[1]
or set terminal auto
set -l function
switch "$terminal"
case auto
# Nowadays, konsole does not set $KONSOLE_PROFILE_NAME anymore,
# and it uses the xterm sequences.
if set -q KONSOLE_PROFILE_NAME
set function __fish_cursor_konsole
else if set -q ITERM_PROFILE
set function __fish_cursor_1337
else
set function __fish_cursor_xterm
end
case konsole
set function __fish_cursor_konsole
case xterm
set function __fish_cursor_xterm
end
set -l tmux_prefix
set -l tmux_postfix
if set -q TMUX
set tmux_prefix echo -ne "'\ePtmux;\e'"
set tmux_postfix echo -ne "'\e\\\\'"
end
set -q fish_cursor_unknown
or set -g fish_cursor_unknown block blink
echo "
function fish_vi_cursor_handle --on-variable fish_bind_mode --on-event fish_postexec --on-event fish_focus_in
set -l varname fish_cursor_\$fish_bind_mode
if not set -q \$varname
set varname fish_cursor_unknown
end
$tmux_prefix
$function \$\$varname
$tmux_postfix
end
" | source
echo "
function fish_vi_cursor_handle_preexec --on-event fish_preexec
set -l varname fish_cursor_default
if not set -q \$varname
set varname fish_cursor_unknown
end
$tmux_prefix
$function \$\$varname
$tmux_postfix
end
" | source
end