.zsh/functions/ssh

   1 # -*- mode:sh -*-
   2
   3 _jj_ssh() {
   4     # TERM is one of the variables that is usually allowed to be
   5     # transmitted to the remote session. The remote host should have the
   6     # appropriate termcap or terminfo file to handle the TERM you
   7     # provided. When connecting to random hosts, this may not be the
   8     # case if your TERM is somewhat special. A good fallback is
   9     # xterm. Most terminals are compatible with xterm and all hosts have
  10     # a termcap or terminfo file to handle xterm. Therefore, for some
  11     # values of TERM, we fallback to xterm.
  12     #
  13     # Now, you may connect to a host where your current TERM is fully
  14     # supported and you will get xterm instead (which means 8 base
  15     # colors only). There is no clean solution for this. You may want to
  16     # reexport the appropriate TERM when logged on the remote host or
  17     # use commands like this: ssh -t XXXXX env TERM=$TERM emacsclient -t
  18     # -c
  19     #
  20     # If the remote host uses the same zshrc than this one, there is
  21     # something in `$ZSH/rc/00-terminfo.zsh` to restore the appropriate
  22     # terminal (saved in `LC__ORIGINALTERM`).
  23     #
  24     # The problem is quite similar for LANG and LC_MESSAGES. We reset
  25     # them to C to avoid any problem with hosts not having your locally
  26     # installed locales. See this post for more details on this:
  27     # http://vincent.bernat.im/en/blog/2011-zsh-zshrc.html
  28     #
  29     # Also, when the same ZSH configuration is used on the remote host,
  30     # the locale is reset with the help of 12-Locale.zsh
  31     case "$TERM" in
  32         rxvt-256color|rxvt-unicode|rxvt-unicode-256color)
  33             LC__ORIGINALTERM=$TERM TERM=rxvt LANG=C LC_MESSAGES=C command ssh "$@"
  34             ;;
  35         *)
  36             LANG=C LC_MESSAGES=C command ssh "$@"
  37             ;;
  38     esac
  39 }
  40
  41 _jj_first_non_optional_arg() {
  42     local args
  43     args=( "$@" )
  44     args=( ${(R)args:#-*} )
  45     print -- $args[1]
  46 }
  47
  48 # Alter window title
  49 _jj_title () {
  50     [ -t 1 ] || return
  51     emulate -L zsh
  52     local title
  53     title=${@//[^[:alnum:]\/>< ._~:=?@-]/ }
  54     case $TERM in
  55         screen*)
  56             print -n "\ek$title\e\\"
  57             print -n "\e]1;$title\a"
  58             print -n "\e]2;$title\a"
  59             ;;
  60         rxvt*|xterm*)
  61             print -n "\e]1;$title\a"
  62             print -n "\e]2;$title\a"
  63             ;;
  64     esac
  65 }
  66
  67 _jj_title $(_jj_first_non_optional_arg "$@")
  68 _jj_ssh "$@"