zsh/rc: Minor documentation updates.

[config/dotfiles.git] / zsh / rc

diff --git a/zsh/rc b/zsh/rc
index e29219af05bfa5d838054800abf923e1b9634b44..80178e0cdc57194f6c66d6db910b97055ec68e04 100644 (file)
--- a/zsh/rc
+++ b/zsh/rc
@@ -165,9 +165,6 @@ if [[ $ZSH_VERSION == (4.3.<9->|4.<4->*|<5->*) ||
               $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.
@@ -241,21 +238,10 @@ if [[ $ZSH_VERSION == (4.3.<9->|4.<4->*|<5->*) ||
     }
     add-zsh-hook chpwd prompt_chpwd
 
-    # Call vcs_info as precmd before every prompt.
-    prompt_precmd() {
-        vcs_info
-    }
-    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
-    # ${vcs_info_msg_0_} is empty. Provide a workaround for those versions,
-    # thanks to Frank Terbeck <ft@bewatermyfriend.org> for it.
-    else
-        RPROMPT='${vcs_info_msg_0_:- }'
-    fi
+    # Used by prompt code below to determine if vcs_info should be run.
+    RUN_VCS_INFO=1
+else
+    RUN_VCS_INFO=
 fi
 
 # Set the default prompt. The current host and working directory is displayed,
@@ -264,11 +250,28 @@ fi
 #
 # 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 \
+prompt_precmd() {
+    # Call vcs_info before every prompt.
+    if [[ -n $RUN_VCS_INFO ]]; then
+        vcs_info
+
+        # 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
+        # ${vcs_info_msg_0_} is empty. Provide a workaround for those
+        # versions, thanks to Frank Terbeck <ft@bewatermyfriend.org> for it.
+        else
+            RPROMPT="${vcs_info_msg_0_:- }"
+        fi
+    fi
+
+    PROMPT="$green%B%m%b$default:$blue%B%~%b$default \
 %(1j.$yellow%j$default.)%# \
 %(?..($red%B%?%b$default%) )"
+}
+add-zsh-hook precmd prompt_precmd
 
-unset red blue green yellow default
 
 # When screen, xterm or rxvt is used set the name of the window to the
 # currently running program.