bash: remove exec new, improve prompt, block cursor during command

shell/.bashrc

@@ -5,7 +5,8 @@
 # If not running interactively, don't do anything
 [[ $- != *i* ]] && return
 
-which nu >/dev/null && exec nu
-
 alias ls='ls --color=auto'
-PS1='[\u@\h \W]\$ '
+PS1='\e[34m\u@\h\e[0m \e[32m\W\e[0m \$ '
+
+function before_command() { echo -ne '\e[2 q'; }
+trap before_command DEBUG

shell/.inputrc

@@ -1,5 +1,11 @@
 set editing-mode vi
 set show-mode-in-prompt on
-set vi-ins-mode-string \1\e[6 q\2
-set vi-cmd-mode-string \1\e[2 q\2
+set vi-ins-mode-string \1\e[6 q\2\e[31m[+]\e[0m \2
+set vi-cmd-mode-string \1\e[2 q\2\e[32m[:]\e[0m \2
 
+set keymap vi-command
+"k": history-substring-search-backward
+"j": history-substring-search-forward
+
+set keymap vi-insert
+"\C-l": clear-screen