Better prompt documentation

1 files changed, 19 insertions, 7 deletions

diff --git a/.bashrc b/.bashrc
index bbfc6d4..172c402 100644
--- a/.bashrc
+++ b/.bashrc
@@ -111,18 +111,30 @@ if [[ "$MY_SHELL" =~ "bash" ]]; then
     shopt -s histappend
     shopt -s cmdhist
 
-    export PROMPT_COMMAND="history -a"
+    function _prompt_command
+    {
+        # This effectively forcibly synchronizes history lists between windows
+        # such that a command entered in a different window will be available
+        # for ^R in this window after the next prompt generation.
+        history -a # Append current window history to history file
+        history -n # Read new history entries to current window history list
+    }
+
+    export PROMPT_COMMAND=_prompt_command
 
     # Cache user and host instead of using \h and \u to avoid the hostname and
     # username lookup on every line. This can be really slow on a slow
-    # connection or on systems running SSSD.
-
-    # Old simple version
-    #export PS1="\t $(whoami)@$(hostname -s) \W \$ "
+    # connection or on systems running SSSD. 2019-9-22: Removed username from
+    # the cache so that it switches to roo correctly on sudo. Will re-evaluate.
 
     # Colorful version (colors are for my normal stterm scheme, not ASCII)
-    [[ $UID == 0 ]] && _pcolor="92" || _pcolor="36"
-    export PS1="\t \[\e[${_pcolor};1;49m\]$(whoami)\[\e[91;1;49m\]@$(hostname -s) \[\e[36;1;49m\]\W \[\e[33;1;49m\]$ \[\e[39;0;49m\]"
+    _clear="\[\e[39;0;49m\]"
+    _cyan="\[\e[36;1;49m\]"
+    _green="\[\e[91;1;49m\]"
+    _gold="\[\e[33;1;49m\]"
+    _red="\[\e[92;1;49m\]"
+
+    export PS1="\t ${_cyan}\u${_green}@$(hostname -s) ${_cyan}\W ${_gold}\\$ ${_clear}"
 
     load_all_from "$HOME/.bash_completion.d"