local yellow="%{${fg[yellow]}%}"
local default="%{${fg[default]}%}"
-# Set the default prompt. The current host and working directory is displayed,
-# the exit code of the last command if it wasn't 0, the number of running jobs
-# if not 0.
-#
-# The prompt is in green and blue to make easily detectable, the error exit
-# code in red and bold and the job count in yellow.
-PROMPT="$green%B%m%b$default:$blue%B%~%b$default \
-%(1j.$yellow%j$default.)%# \
-%(?..($red%B%?%b$default%) )"
-
# vcs_info was added in 4.3.9 but it works in earlier versions too. So load it
# if the necessary files are available in ~/.zsh/functions/vcs_info (often a
# symbolic link to current checkout of Zsh's sources).
$fpath)
fi
- # Allow substitutions and expansions in the prompt, necessary for
- # vcs_info.
- setopt promptsubst
# Load vcs_info to display information about version control repositories.
autoload -Uz vcs_info
# Only look for git and mercurial repositories; the only I use.
zstyle ':vcs_info:*' unstagedstr '¹'
zstyle ':vcs_info:*' stagedstr '²'
- # Call vcs_info as precmd before every prompt.
- prompt_precmd() {
- vcs_info
+ # Default to running vcs_info. If possible we prevent running it later for
+ # speed reasons. If set to a non empty value vcs_info is run.
+ FORCE_RUN_VCS_INFO=1
+
+ # Cache system inspired by Bart Trojanowski
+ # (http://jukie.net/~bart/blog/pimping-out-zsh-prompt).
+ #zstyle ':vcs_info:*+pre-get-data:*' hooks pre-get-data
+ +vi-pre-get-data() {
+ # Only Git and Mercurial support and need caching. Abort if any other
+ # VCS is used.
+ [[ "$vcs" != git && "$vcs" != hg ]] && return
+
+ # If the shell just started up or we changed directories (or for other
+ # custom reasons) we must run vcs_info.
+ if [[ -n $FORCE_RUN_VCS_INFO ]]; then
+ FORCE_RUN_VCS_INFO=
+ return
+ fi
+
+ # Don't run vcs_info by default to speed up the shell.
+ ret=1
+ # If a git/hg command was run then run vcs_info as the status might
+ # need to be updated.
+ case "$(fc -ln $(($HISTCMD-1)))" in
+ git* | g\ *)
+ ret=0
+ ;;
+ hg*)
+ ret=0
+ ;;
+ esac
+ }
+
+ # Must run vcs_info when changing directories.
+ prompt_chpwd() {
+ FORCE_RUN_VCS_INFO=1
}
- add-zsh-hook precmd prompt_precmd
-
- # Display the VCS information in the right prompt.
- if [[ $ZSH_VERSION == (4.3.<9->|4.<4->*|<5->*) ]]; then
- RPROMPT='${vcs_info_msg_0_}'
- # There is a bug in Zsh below 4.3.9 which displays a wrong symbol when
- # ${vcs_info_msg_0_} is empty. Provide a workaround for those versions,
- # thanks to Frank Terbeck <ft@bewatermyfriend.org> for it.
+ add-zsh-hook chpwd prompt_chpwd
+
+ # Used by prompt code below to determine if vcs_info should be run.
+ RUN_VCS_INFO=1
+else
+ RUN_VCS_INFO=
+fi
+
+# Set the prompt. A two line prompt is used. On the top left the current
+# working directory is displayed, on the right vcs_info (if available). On the
+# bottom left current username and host is shown, the exit code of the last
+# command if it wasn't 0, the number of running jobs if not 0.
+#
+# The prompt is in green and blue to make easily detectable, the error exit
+# code in red and bold and the job count in yellow.
+#
+# Thanks to Adam's prompt for the basic idea of this prompt.
+prompt_precmd() {
+ # Regex to remove elements which take no space. Used to calculate the
+ # width of the top prompt. Thanks to Bart's and Adam's prompt code in
+ # Functions/Prompts/prompt_*_setup.
+ local zero='%([BSUbfksu]|([FB]|){*})'
+
+ # Call vcs_info before every prompt.
+ if [[ -n $RUN_VCS_INFO ]]; then
+ vcs_info
else
- RPROMPT='${vcs_info_msg_0_:- }'
+ vcs_info_msg_0_=
+ fi
+
+ local width width_left width_right
+ local top_left top_right
+
+ # Display vcs_info (if used) on the right in the top prompt.
+ top_right="${vcs_info_msg_0_}"
+ width_right=${#${(S%%)top_right//$~zero/}}
+ # Remove vcs_info if it would get too long.
+ if [[ $(( COLUMNS - 4 - 1 - width_right )) -lt 0 ]]; then
+ top_right=
+ width_right=0
fi
-fi
-unset red blue green yellow default
+ # Display current directory on the left in the top prompt. Truncate the
+ # directory if necessary.
+ width=$(( COLUMNS - 4 - 1 - width_right ))
+ top_left=".-$default%b($yellow%$width<..<%~%<<$default)%B$blue"
+
+ # Calculate the width of the top prompt to fill the middle with "-".
+ width_left=${#${(S%%)top_left//$~zero/}}
+ width_right=${#${(S%%)top_right//$~zero/}}
+ width=$(( COLUMNS - width_left - width_right ))
+
+ PROMPT="$blue%B$top_left${(l:$width::-:)}%b$default$top_right
+$blue%B'%b$default\
+$green%B%n%b$default@$green%B%m%b$default %(1j.$yellow%j$default.)%# \
+%(?..($red%B%?%b$default%) )"
+
+}
+add-zsh-hook precmd prompt_precmd
+
# When screen, xterm or rxvt is used set the name of the window to the
# currently running program.
# in the term/outer screen.
if [[ $program_name == @screen ]]; then
program_name="@:${$(hostname)//.*/}"
+ # Use "@:!hostname" for root commands.
+ elif [[ $program_name == @!screen ]]; then
+ program_name="@:!${$(hostname)//.*/}"
fi
fi
if [[ $TERM != dumb && -z $STY ]]; then
# Get running detached sessions.
session=$(screen -list | grep 'Detached' | awk '{ print $1; exit }')
+
+ # As we exec later we have to set the title here.
+ window_preexec "screen"
+
# Create a new session if none is running.
if [[ -z $session ]]; then
exec screen