Make prompt generation more efficient

dotlib/prompt.sh

@@ -7,7 +7,7 @@ if (( 10#$month == 3 && 10#$day < 18 )); then
     printf "Only %d days left until Saint Patrick's day!\n" "$(( 17 - 10#$day ))"
   fi
 
-  holiday=🍀
+  prompt_sym=🍀
 elif (( 10#$month == 10 )); then
   if (( 31 - 10#$day == 0 )); then
     printf 'Have a spooky halloween!\n'
@@ -15,7 +15,7 @@ elif (( 10#$month == 10 )); then
     printf 'Only %d days left until Halloween!\n' "$(( 31 - 10#$day ))"
   fi
 
-  holiday=🎃
+  prompt_sym=🎃
 elif (( 10#$month == 12 && 10#$day < 26 )); then
   if (( 25 - 10#$day == 0 )); then
     printf 'Merry Christmas!\n'
@@ -23,28 +23,30 @@ elif (( 10#$month == 12 && 10#$day < 26 )); then
     printf 'Only %d days left until Christmas!\n' "$(( 25 - 10#$day ))"
   fi
 
-  holiday=🌲
+  prompt_sym=🌲
 fi
 
 setup-prompt() {
-  tput sgr0
+  local cmd
+
+  if [[ -v prompt_cmds[@] ]]; then
+    for cmd in "${prompt_cmds[@]}"; do
+      "$cmd"
+    done
+  fi
 
   if [[ -d .git ]]; then
-    git_branch=" $(command git branch --show-current)"
+    git_branch="$(command git branch --show-current) "
   else
-    git_branch=
+    git_branch=""
   fi
 }
 
 PROMPT_COMMAND=setup-prompt
-PS1='\w$git_branch'
+PS1='\w $git_branch'
 
 if [[ -v SSH_CLIENT ]]; then
-  if [[ -v HOSTNAME ]]; then
-    PS1+=' $HOSTNAME'
-  else
-    PS1+=' $(hostname)'
-  fi
+  PS1+='${HOSTNAME-"$(hostname)"} '
 fi
 
-PS1+=' ${holiday-λ} '
+PS1+='${prompt_sym-λ} '