.profile: Make the fancy PS1 bash-specific

Because holy good god damn that fucked up every other prompt fml

.profile

@@ -264,22 +264,21 @@ alias cp='cp -i'
 alias d='du -hs'
 alias todo='$EDITOR "$HOME/Documents/todo"'
 
-# Set up a default PS1
-# This *should* work for all terminals. I know it works on ksh
-_ps1() {
+# Set up a default PS1 for bash
+_ps1bash() {
 	exitcode="$?"
-	r="\e[0m"
-	bg_red="\e[41m"
-	bg_yellow="\e[43m"
-	bg_blue="\e[44m"
-	fg_black="\e[30m"
-	fg_red="\e[31m"
-	fg_green="\e[32m"
-	fg_yellow="\e[33m"
-	fg_blue="\e[34m"
-	fg_magenta="\e[35m"
-	fg_grey="\e[37m"
-	fg_bold="\e[1m"
+	r="\[\e[0m\]"
+	bg_red="\[\e[41m\]"
+	bg_yellow="\[\e[43m\]"
+	bg_blue="\[\e[44m\]"
+	fg_black="\[\e[30m\]"
+	fg_red="\[\e[31m\]"
+	fg_green="\[\e[32m\]"
+	fg_yellow="\[\e[33m\]"
+	fg_blue="\[\e[34m\]"
+	fg_magenta="\[\e[35m\]"
+	fg_grey="\[\e[37m\]"
+	fg_bold="\[\e[1m\]"
 
 	# Add hostname prefix in SSH sessions
 	# Yes, shellcheck. I get it. That's what the or is for
@@ -343,7 +342,7 @@ _ps1() {
 		fail="${fg_bold}${fg_red}?"
 	fi
 	# shellcheck disable=2059
-	printf "[${prefix}${cpwd}${r}]${fail}${r}${prompt}${r} "
+	PS1="[${prefix}${cpwd}${r}]${fail}${r}${prompt}${r} "
 }
 
 # And export our PS1
@@ -352,8 +351,9 @@ case "$_baseshell" in
 		# Don't do this on ZSH
 		# I have a custom theme for that
 		;;
-	*bash|ksh)
-		export PS1='$(_ps1)'
+	*bash)
+		export PS1=""
+		export PROMPT_COMMAND=_ps1bash
 		;;
 	*)
 		export PS1='[\e[31m\w\e[0m]\e[32m\$\e[0m '