From d45d5d5effd9d2b133b8759ecd63318fae45673e Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Sat, 18 Oct 2014 13:59:10 +1300
Subject: Define PS{2..4}, including a nice PS4 for set -x

---
 bash/bashrc.d/prompt.bash | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'bash/bashrc.d/prompt.bash')

diff --git a/bash/bashrc.d/prompt.bash b/bash/bashrc.d/prompt.bash
index b4f0e735..9a96ed33 100644
--- a/bash/bashrc.d/prompt.bash
+++ b/bash/bashrc.d/prompt.bash
@@ -10,7 +10,7 @@ prompt() {
     # What's done next depends on the first argument to the function
     case $1 in
 
-        # Turn complex, colored prompt on
+        # Turn complex, colored PS1 and debugging PS4 prompts on
         on)
             # Set up pre-prompt command and prompt format
             PROMPT_COMMAND='declare -i PROMPT_RETURN=$? ; history -a'
@@ -53,12 +53,18 @@ prompt() {
 
             # String it all together
             PS1='\['"$format"'\]'"$PS1"'\['"$reset"'\] '
+            PS2='> '
+            PS3='? '
+            PS4='+<$?> ${BASH_SOURCE:-$BASH}:$FUNCNAME:$LINENO:'
             ;;
 
-        # Revert to simple inexpensive prompt
+        # Revert to simple inexpensive prompts
         off)
             unset -v PROMPT_COMMAND PROMPT_DIRTRIM PROMPT_RETURN
             PS1='\$ '
+            PS2='> '
+            PS3='? '
+            PS4='+ '
             ;;
 
         git)
-- 
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