zsh/rc: Documentation update.

diff --git a/zsh/rc b/zsh/rc
index 97555277906d9c42a119824c819603f7893d5747..be0b9a28e73bc1b5764c60ba0a3067d4b32fd51e 100644 (file)
--- a/zsh/rc
+++ b/zsh/rc
@@ -68,7 +68,8 @@ setopt correct
 # Enable zsh's extended glob abilities.
 setopt extendedglob
 
-# Don't exit if <C-d> is pressed.
+# Don't exit if <C-D> is pressed. Prevents exiting the shell by accident (e.g.
+# pressing <C-D> twice).
 setopt ignoreeof
 
 
@@ -94,7 +95,7 @@ bindkey -a -r '^[OA' '^[OB' '^[OC' '^[OD' '^[[A' '^[[B' '^[[C' '^[[D'
 # Make sure every entry in $fpath is unique.
 typeset -U fpath
 # ~/.zsh/functions/completion is a symbolic link to the Completion directory
-# of a Zsh CVS checkout. Use it to get the newest completions if available.
+# of a Zsh Git checkout. Use it to get the newest completions if available.
 if [[ -d ~/.zsh/functions/completion ]]; then
     fpath=(~/.zsh/functions/completion/*/*(/) $fpath)
 fi
@@ -346,7 +347,8 @@ precmd_functions+=(longrun_precmd)
 # if not 0.
 #
 # The prompt is in green and blue to make easily detectable, the error exit
-# code in red and bold and the job count in yellow.
+# code in red and bold and the job count in yellow. Designed for dark
+# terminals.
 #
 # Thanks to Adam's prompt for the basic idea of this prompt.
 prompt_precmd() {
@@ -382,9 +384,9 @@ prompt_precmd() {
         host="%U${host}%u"
     fi
 
-    # Number of background processes in yellow.
+    # Number of background processes in yellow if not zero.
     local background="%(1j.${yellow}%j${default}.)"
-    # Exit code in bright red if not zero.
+    # Exit code in bright red in parentheses if not zero.
     local exitcode="%(?..(${red}%B%?%b${default}%) )"
 
     # Prefix characters in first and second line.
@@ -420,14 +422,14 @@ ${bottom_prefix}${user}@${host} ${background}%# ${exitcode}"
 precmd_functions+=(prompt_precmd)
 
 
-# When screen, tmux, xterm or rxvt is used set the name of the window to the
-# currently running program.
+# When GNU screen, tmux, xterm or rxvt is used set the name of the window to
+# the currently running program.
 #
 # When a program is started preexec() sets the window's name to it; when it
 # stops precmd() resets the window's name to 'zsh'. 'fg' is supported and sets
 # the window's name to the resumed job.
 #
-# It works with screen, tmux, xterm and rxvt.
+# It works with GNU screen, tmux, xterm and rxvt.
 #
 # If a command is run with sudo or if the shell is running as root then a ! is
 # added at the beginning of the command to make this clear. If a command is
@@ -451,7 +453,7 @@ if [[ $TERM == screen* || $TERM == xterm* || $TERM == rxvt* ]]; then
         # Get the program name with its arguments.
         local program_name=$1
 
-        # When sudo is used use real program name instead, but with an
+        # When sudo is used, use real program name instead, but with an
         # exclamation mark at the beginning (handled below).
         local program_sudo=
         if [[ $program_name == sudo* ]]; then
@@ -541,8 +543,8 @@ if [[ $TERM == screen* || $TERM == xterm* || $TERM == rxvt* ]]; then
         window_reset=
     }
 
-    # Sets the window title. Works with screen, tmux (which uses screen as
-    # TERM), xterm and rxvt. (V) escapes all non-printable characters. Thanks
+    # Sets the window title. Works with GNU screen, tmux (which uses screen as
+    # TERM), xterm and rxvt. (V) escapes all non-printable characters, thanks
     # to Mikachu in #zsh on Freenode (2010-08-07 17:09 CEST).
     if [[ $TERM == screen* ]]; then
         window_title() {
@@ -728,7 +730,7 @@ alias -g EN='2>/dev/null'
 alias -g L='2>&1 | less'
 alias -g LS='2>&1 | less -S' # -S prevents wrapping of long lines
 alias -g D='2>&1 | colordiff | less'
-# Global aliases for often used commands in the command line.
+# Global aliases for often used commands.
 alias -g A='| awk'
 alias -g G='| grep'
 alias -g H='| head'
@@ -814,7 +816,7 @@ fi
 # LOAD ADDITIONAL CONFIGURATION FILES
 
 # Configuration option for rc.local to use GNU screen/tmux. By default GNU
-# screen is used. Possible values: screen, tmux.
+# screen is used. Possible values: screen, tmux and empty (no value).
 use_multiplexer=screen
 
 source_config ~/.zsh/rc.local
@@ -866,13 +868,13 @@ fi
 # cases it doesn't work, the E alias can be used as workaround.
 #
 # Moved in the "run commands" section to prevent one unnecessary zsh process
-# when starting screen/tmux (see above).
+# when starting GNU screen/tmux (see above).
 exec 2>>(while read -r -k -u 0 line; do
     printf '\e[91m%s\e[0m' "$line";
     print -n $'\0';
 done &)
 
-# Run the following programs every 4 hours.
+# Run the following programs every 4 hours (and when zsh starts).
 PERIOD=14400
 periodic() {
     # Display fortunes.