emacs-vterm-bash.sh (2117B)
1 # Some of the most useful features in emacs-libvterm require shell-side 2 # configurations. The main goal of these additional functions is to enable the 3 # shell to send information to `vterm` via properly escaped sequences. A 4 # function that helps in this task, `vterm_printf`, is defined below. 5 6 function vterm_printf(){ 7 if [ -n "$TMUX" ] && ([ "${TERM%%-*}" = "tmux" ] || [ "${TERM%%-*}" = "screen" ] ); then 8 # Tell tmux to pass the escape sequences through 9 printf "\ePtmux;\e\e]%s\007\e\\" "$1" 10 elif [ "${TERM%%-*}" = "screen" ]; then 11 # GNU screen (screen, screen-256color, screen-256color-bce) 12 printf "\eP\e]%s\007\e\\" "$1" 13 else 14 printf "\e]%s\e\\" "$1" 15 fi 16 } 17 18 # Completely clear the buffer. With this, everything that is not on screen 19 # is erased. 20 if [[ "$INSIDE_EMACS" = 'vterm' ]]; then 21 function clear(){ 22 vterm_printf "51;Evterm-clear-scrollback"; 23 tput clear; 24 } 25 fi 26 27 # With vterm_cmd you can execute Emacs commands directly from the shell. 28 # For example, vterm_cmd message "HI" will print "HI". 29 # To enable new commands, you have to customize Emacs's variable 30 # vterm-eval-cmds. 31 vterm_cmd() { 32 local vterm_elisp 33 vterm_elisp="" 34 while [ $# -gt 0 ]; do 35 vterm_elisp="$vterm_elisp""$(printf '"%s" ' "$(printf "%s" "$1" | sed -e 's|\\|\\\\|g' -e 's|"|\\"|g')")" 36 shift 37 done 38 vterm_printf "51;E$vterm_elisp" 39 } 40 41 # This is to change the title of the buffer based on information provided by the 42 # shell. See, http://tldp.org/HOWTO/Xterm-Title-4.html, for the meaning of the 43 # various symbols. 44 PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND; }"'echo -ne "\033]0;${HOSTNAME}:${PWD}\007"' 45 46 # Sync directory and host in the shell with Emacs's current directory. 47 # You may need to manually specify the hostname instead of $(hostname) in case 48 # $(hostname) does not return the correct string to connect to the server. 49 # 50 # The escape sequence "51;A" has also the role of identifying the end of the 51 # prompt 52 vterm_prompt_end(){ 53 vterm_printf "51;A$(whoami)@$(hostname):$(pwd)" 54 } 55 PS1=$PS1'\[$(vterm_prompt_end)\]'