improve branch name extraction in git alignment

Use sed for reliable escape sequence removal in the
calculate_git_alignment function to enhance performance.

bashrc

@@ -125,11 +125,50 @@ function show_date() {
 
 export HISTCONTROL=ignoreboth:erasedups
 
+# Optimized divider function - reduced subshells and calculations
+function draw_prompt_divider() {
+  local timestamp prefix_length line_length i
+  printf -v timestamp '%(%H:%M:%S)T' -1  # Faster than $(date)
+  local prefix="$timestamp ├"
+  prefix_length=${#prefix}
+  line_length=$(( ${COLUMNS:-80} - prefix_length ))
+  
+  # Print prefix then fill with box-drawing characters
+  printf '%s' "$prefix"
+  for ((i=0; i<line_length; i++)); do printf '─'; done
+  echo
+}
+
+# Cache static values that don't change during session
+_CACHED_USER_HOST="$USER@$HOSTNAME"
+_CACHED_USER_HOST_LENGTH=${#_CACHED_USER_HOST}
+
+# Optimized git alignment calculation
+function calculate_git_alignment() {
+  # Only calculate if git status exists
+  [[ -z "$GITSTATUS_PROMPT" ]] && { GIT_ALIGNMENT_PADDING=""; return; }
+  
+  # Fast branch name extraction - use sed for reliable escape sequence removal
+  local cleaned
+  cleaned=$(echo "$GITSTATUS_PROMPT" | sed -e 's/\x01//g' -e 's/\x02//g' -e 's/\x1b\[[0-9;]*m//g')
+  local branch_name="${cleaned%% *}"  # Get first word (branch)
+  
+  # Calculate padding (cache the static hostname length)
+  local needed_padding=$((_CACHED_USER_HOST_LENGTH - ${#branch_name}))
+  [[ $needed_padding -lt 8 ]] && needed_padding=8
+  
+  # Use printf once to generate padding
+  printf -v GIT_ALIGNMENT_PADDING '%*s' $needed_padding ''
+}
+
 # Load custom gitstatus configuration
 [ -f "$HOME/.config/bash/gitstatus-custom.sh" ] && . "$HOME/.config/bash/gitstatus-custom.sh"
 
-# Set PS1 with time, user@host, directory on first line, git status on second line, prompt on third line
+# Set up prompt command to draw divider, update git status, and calculate alignment
-PS1='\t \[\033[01;32m\]\u@\h\[\033[00m\] \[\033[1;34m\]\w\[\033[00m\]\n${GITSTATUS_PROMPT:+         $GITSTATUS_PROMPT\n}\[\033[01;$((31+!$?))m\]\$\[\033[00m\] \[\e]0;\u@\h: \w\a\]'
+PROMPT_COMMAND="draw_prompt_divider; my_gitstatus_prompt_update; calculate_git_alignment"
+
+# Set PS1 with user@host, directory on first line, dynamically aligned git status, prompt on third line
+PS1='\[\033[01;32m\]\u@\h\[\033[00m\] \[\033[1;34m\]\w\[\033[00m\]\n${GITSTATUS_PROMPT:+$GIT_ALIGNMENT_PADDING$GITSTATUS_PROMPT\n}\[\033[01;$((31+!$?))m\]\$\[\033[00m\] \[\e]0;\u@\h: \w\a\]'
 
 # If there are multiple matches for completion, Tab should cycle through them
 bind TAB:menu-complete

gitstatus-custom.sh

@@ -60,5 +60,4 @@ function my_gitstatus_prompt_update() {
 
 # Start gitstatusd and set up prompt command
 gitstatus_stop && gitstatus_start -s -1 -u -1 -c -1 -d -1
-PROMPT_COMMAND=my_gitstatus_prompt_update
 shopt -s promptvars