[sh] shellcheck shell rc files

sh/bashrc

@@ -59,8 +59,9 @@ else
 	__PS1+='\w'
 fi >/dev/null 2>&1
 
+# `$(($??5:3))` isn’t meant to be expanded
 # shellcheck disable=SC2016
-__PS1+='\[\e[0;37;44m\]'"$__close"'\[\e[0;1;3$(($??5:3))m\]\$\[\e[0m\] '
+__PS1+='\[\e[0;37;44m\]'$__close'\[\e[0;1;3$(($??5:3))m\]\$\[\e[0m\] '
 
 # urxvt-tabbedex has nice handling of bell
 # See https://github.com/mina86/urxvt-tabbedex for latest copy
@@ -71,7 +72,7 @@ esac
 # Add title to terminals
 __tsl=$(tput tsl 2>/dev/null)
 if [ -n "$__tsl" ]; then
-	__PS1='\['"$__tsl$USER@$host$(tput fsl)"'\]'$__PS1
+	__PS1='\['$__tsl$USER@$host$(tput fsl)'\]'$__PS1
 fi
 
 unset __tsl __close __sp __ellipsis
@@ -82,6 +83,7 @@ PROMPT_COMMAND='PS1=${__PS1//"{{}}"/"$(eval "$PS1_COMMANDS")"}'
 ## Show times on the right, behaves a bit like zsh's right prompt, but
 ## not exactly the same way.
 ##
+__COMMAND_RPROMPT_CACHE_KEY=
 __COMMAND_RPROMPT_TIMEZONES='NYC:US/Eastern LON:Europe/London ZRH:Europe/Zurich TOK:Asia/Tokyo'
 __command_rprompt() {
 	local n current

sh/shellrc

@@ -210,7 +210,7 @@ cargo() {
 
 # No need to set environment if it has already been set.
 ${MINA86RC:+return}
-MINA86RC=done
+MINA86RC=ok
 export MINA86RC
 
 if which nano >/dev/null 2>&1; then