Update fresh prompt

* When a command fails, don't print the error code at the end of the
  first line but directly after the git stats.
* Remove `cr` from `prompt_opts` since there is no longer a new line in
  `PS1`, combined with above, this result in no new lines being inserted
  when the terminal becomes narrower e.g. a horizontal tmux split.
* Remove `fresh_visible_length` function and instead use the length of
  string variables e.g. `${#userhost}`.

prompt_fresh_setup

@@ -31,24 +31,24 @@ prompt_fresh_setup() {
     add-zsh-hook -d preexec fresh_almostontop
   fi
 
-  if [ "$USERNAME" = "root" ]; then
-    local user="%{%F{9}%}%n%{%f%}"
+  if [ "$USER" = "root" ]; then
+    local user="%{%F{1}%}%n%{%f%}"
   else
     local user="%{%F{35}%}%n%{%f%}"
   fi
 
+  local userhost=$USER
   if [ "$SSH_CONNECTION" != "" ]; then
-    local user="%{%F{35}%}$user%{%f%}@%{%F{244}%}%M%{%f%}"
+    local user="$user@%{%F{244}%}%M%{%f%}"
+    local userhost="$userhost@`hostname`"
   fi
 
-  local length=`fresh_visible_length "$user"`
-
   PS1="«$user» "
-  PS2="${(l:$length + 1:: :)}» "
+  PS2="«${(l:${#userhost}:: :)}» "
 
   RPS1='$(fresh_rprompt)'
 
-  prompt_opts=(cr percent sp subst)
+  prompt_opts=(percent sp subst)
 }
 
 prompt_cleanup() {
@@ -119,18 +119,15 @@ fresh_line_one() {
     fi
   fi
 
-  # Construct the prompt string
-  local line="$time_stamp $directory $git"
-
   # Print the first line of the prompt
-  if [[ $exit_code -eq 0 ]]; then
-    print -P "$line"
-  else
+  if [[ $exit_code -ne 0 ]]; then
     # The last command failed, display its error code at the right
-    local result="%{%B%F{1}%}$exit_code%{%f%b%}"
-    local length=`fresh_visible_length "$line$result"`
-    print -P "$line${(l:COLUMNS - $length - 1:: :)}$result"
+    local result=" %{%B%F{1}%}$exit_code%{%f%b%}"
   fi
+
+  # Construct the prompt string
+  local line="$time_stamp $directory $git$result"
+  print -P "$line"
 }
 
 fresh_rprompt() {
@@ -150,10 +147,6 @@ fresh_almostontop() {
   print -P "$PROMPT"'$1'
 }
 
-fresh_visible_length() {
-  echo $(( ${#${(S%%)1//(\%(KF1]|)\{*\}|\%[Bbkf])}} ))
-}
-
 fresh_compile_git_prompt() {
   # Compile a simple C executable which parses the output of `git status
   # --procelain` to greatly decrease the time taken to render the prompt