Added zsh improvements from work laptop and a doc

home_zsh/.zsh/functions/chpwd_update_git_vars

@@ -0,0 +1,4 @@
+# update the prompt after changing to a new directory. 
+# http://sebastiancelis.com/2009/11/16/zsh-prompt-git-users/
+
+update_current_git_vars

home_zsh/.zsh/functions/precmd_update_git_vars

@@ -0,0 +1,5 @@
+if [ -n "$__EXECUTED_GIT_COMMAND" ]; then
+    update_current_git_vars
+    unset __EXECUTED_GIT_COMMAND
+fi
+

home_zsh/.zsh/functions/preexec_update_git_vars

@@ -0,0 +1,6 @@
+case "$1" in 
+    git*)
+    __EXECUTED_GIT_COMMAND=1
+    ;;
+esac
+

home_zsh/.zsh/functions/prompt_git_info

@@ -0,0 +1,32 @@
+# Git prompt stuff
+# http://sebastiancelis.com/2009/11/16/zsh-prompt-git-users/
+
+if [ -n "$__CURRENT_GIT_BRANCH" ]; then
+    local s="("
+    s+="$__CURRENT_GIT_BRANCH"
+    case "$__CURRENT_GIT_BRANCH_STATUS" in
+        ahead)
+        git_color="%{${fg[yellow]}%}"
+        s+="↑"
+        ;;
+        diverged)
+        git_color="%{${fg[yellow]}%}"
+        s+="↕"
+        ;;
+        behind)
+        git_color="%{${fg[yellow]}%}"
+        s+="↓"
+        ;;
+    esac
+    if [ -n "$__CURRENT_GIT_BRANCH_IS_CLEAN" ]; then
+        git_color="%{${fg[green]}%}"
+    fi
+    if [ -n "$__CURRENT_GIT_BRANCH_IS_DIRTY" ]; then
+        git_color="%{${fg[red]}%}"
+        s+="⚡"
+    fi
+    s+=")"
+ 
+    printf " %s%s" "$git_color" $s
+fi
+

home_zsh/.zsh/functions/update_current_git_vars

@@ -0,0 +1,37 @@
+#  This file is used to set a few environment variables which will make it easy to build up our prompt
+# http://sebastiancelis.com/2009/11/16/zsh-prompt-git-users/
+
+unset __CURRENT_GIT_BRANCH
+unset __CURRENT_GIT_BRANCH_STATUS
+unset __CURRENT_GIT_BRANCH_IS_DIRTY
+
+local st="$(git status 2>/dev/null)"
+
+if [[ -n "$st" ]]; then
+    local -a arr
+    arr=(${(f)st})
+    if [[ $arr[1] =~ 'Not currently on any branch.' ]]; then
+        __CURRENT_GIT_BRANCH='no-branch'
+    else
+        __CURRENT_GIT_BRANCH="${arr[1][(w)4]}";
+    fi
+
+    if [[ $st =~ 'nothing to commit, working directory clean' ]]; then
+        __CURRENT_GIT_BRANCH_IS_CLEAN='1'
+    fi
+
+    if [[ $arr[2] =~ 'Your branch is' ]]; then
+        if [[ $arr[2] =~ 'ahead' ]]; then
+            __CURRENT_GIT_BRANCH_STATUS='ahead'
+        elif [[ $arr[2] =~ 'diverged' ]]; then
+            __CURRENT_GIT_BRANCH_STATUS='diverged'
+        else
+            __CURRENT_GIT_BRANCH_STATUS='behind'
+        fi
+    fi
+
+    if [[ ! $st =~ 'nothing to commit' ]]; then
+        __CURRENT_GIT_BRANCH_IS_DIRTY='1'
+    fi
+
+fi

home_zsh/.zsh/zshalias

@@ -6,6 +6,8 @@ alias ted='java -jar /home/tracey/bin/ted.jar'
 alias ll='ls -alFh --group-directories-first'
 alias la='ls -A'
 alias l='ls -CF'
+alias lad='ls -ldh'        # ls directory
+alias tree='tree -Csu'     # nice alternative to 'recursive ls'
 alias colo='ssh cp'
 alias colosync='ssh syncthing@cp'
 alias mountpi='sshfs -o idmap=user pi@pi3:/home/pi /home/tracey/pi3'

home_zsh/.zshrc

@@ -6,6 +6,13 @@ prompt adam1
 
 setopt histignorealldups sharehistory
 
+#-------------------------------------------------------------
+# Keybindings
+#-------------------------------------------------------------
+
+bindkey '^H' backward-kill-word
+bindkey '^F'   forward-word
+bindkey '^B'   backward-word
 # Use emacs keybindings even if our EDITOR is set to vi
 bindkey -e
 
@@ -15,8 +22,10 @@ SAVEHIST=1000
 HISTFILE=~/.zsh_history
 
 # Use modern completion system
-autoload -Uz compinit
+autoload -U compinit promptinit zcalc zsh-mime-setup
 compinit
+promptinit
+zsh-mime-setup
 
 zstyle ':completion:*' auto-description 'specify: %d'
 zstyle ':completion:*' completer _expand _complete _correct _approximate
@@ -45,3 +54,44 @@ fi
 
 eval `ssh-agent -s` && ssh-agent
 ssh-add .ssh/tlc_gitlab
+
+#-------------------------------------------------------------
+# Prompt bits
+#-------------------------------------------------------------
+# Initialize colors.
+autoload -U colors
+colors
+
+# Allow for functions in the prompt.
+setopt PROMPT_SUBST
+
+# Autoload zsh functions.
+fpath=(~/.zsh/functions $fpath)
+autoload -U ~/.zsh/functions/*(:t)
+
+# Enable auto-execution of functions.
+typeset -ga preexec_functions
+typeset -ga precmd_functions
+typeset -ga chpwd_functions
+
+# Append git functions needed for prompt.
+preexec_functions+='preexec_update_git_vars'
+precmd_functions+='precmd_update_git_vars'
+chpwd_functions+='chpwd_update_git_vars'
+
+# For terminix / tilix
+if [[ $TERMINIX_ID ]]; then
+        source /etc/profile.d/vte.sh
+fi
+
+# Set the prompt.
+#PROMPT=$'%{${fg[cyan]}%}%B%~%b$(prompt_git_info)%{${fg[default]}%} '
+PROMPT=$'%{${fg[magenta]}%}%n%{$reset_color%}\@%{$fg[blue]%}%m%{$reset_color%} %{${fg[cyan]}%}%B%~%b$(prompt_git_info)%{${fg[default]}%} %{$fg[blue]%}%%%{$reset_color%} '
+
+# Export stuff for sshfs over VPN
+echo "SSH_AGENT_PID=$SSH_AGENT_PID; export SSH_AGENT_PID;" >~/.thestuff
+echo "SSH_AUTH_SOCK=$SSH_AUTH_SOCK; export SSH_AUTH_SOCK;" >>~/.thestuff
+
+#ssh-agent
+# Export key file to agent keychain
+keychain --agents ssh --quick --quiet --noask /home/tracey/.ssh/*

home_zsh/zsh_notes.txt

@@ -0,0 +1,11 @@
+#zsh notes
+https://wiki.archlinux.org/index.php/Zsh
+
+This is an example of a two-sided prompt:
+
+PROMPT='%F{red}%n%f@%F{blue}%m%f %F{yellow}%1~%f %# '
+RPROMPT='[%F{yellow}%?%f]'
+
+And here's how it will be displayed:
+
+username@host ~ %                                                         [0]