Enable customization of keybindings

bollux

@@ -137,6 +137,15 @@ bollux_config() {
 	: "${BOLLUX_PROTO:=gemini}"                    # default protocol
 	: "${BOLLUX_URL:=}"                            # start url
 	: "${BOLLUX_BYEMSG:=See You Space Cowboy ...}" # bye message
+	## lesskeys
+	: "${KEY_OPEN:=o}"	# prompt for a link to open
+	: "${KEY_GOTO:=g}"	# prompt for a page to 'goto'
+	: "${KEY_GOTO_FROM:=G}"	# goto a page with current prefilled
+	: "${KEY_BACK:='['}"	# go back in the history
+	: "${KEY_FORWARD:=']'}" # go forward in the history
+	: "${KEY_REFRESH:=r}"	# refresh the page
+	: "${KEY_CYCLE_PRE:=p}" # cycle T_PRE_DISPLAY
+	: "${BOLLUX_CUSTOM_LESSKEY:=${XDG_CONFIG_HOME:-$HOME/.config}/bollux/bollux.lesskey}"
 	## files
 	: "${BOLLUX_DATADIR:=${XDG_DATA_HOME:-$HOME/.local/share}/bollux}"
 	: "${BOLLUX_DOWNDIR:=.}"                       # where to save downloads
@@ -689,8 +698,13 @@ display() { # display METADATA [TITLE]
 		set_title "$title${title:+ - }bollux"
 		# render ANSI color escapes and don't wrap pre-formatted blocks
 		less_cmd=(less -RS)
-		mklesskey "$BOLLUX_LESSKEY" && less_cmd+=(-k "$BOLLUX_LESSKEY")
-		local helpline="o:open, g/G:goto, [:back, ]:forward, r:refresh"
+		mklesskey && less_cmd+=(-k "$BOLLUX_LESSKEY")
+		local helpline="${KEY_OPEN}:open, "
+		helpline+="${KEY_GOTO}/"
+		helpline+="${KEY_GOTO_FROM}:goto, "
+		helpline+="${KEY_BACK}:back, "
+		helpline+="${KEY_FORWARD}:forward, "
+		helpline+="${KEY_REFRESH}:refresh"
 		less_cmd+=(
 			# 'status'line
 			-Pm"$(less_prompt_escape "$BOLLUX_URL") - bollux$"
@@ -735,23 +749,31 @@ less_prompt_escape() { # less_prompt_escape STRING
 }
 
 # generate a lesskey(1) file for custom keybinds
-mklesskey() { # mklesskey FILENAME
-	lesskey -o "$1" - <<-\END
-		#command
-		o quit 0 # 48 open a link
-		g quit 1 # 49 goto a url
-		[ quit 2 # 50 back
-		] quit 3 # 51 forward
-		r quit 4 # 52 re-request / download
-		G quit 5 # 53 goto a url (pre-filled)
-		p quit 6 # 54 cycle T_PRE_DISPLAY and refresh
-		# other keybinds
-		\40 forw-screen-force
-		h left-scroll
-		l right-scroll
-		? status   # 'status' will show a little help thing.
-		= noaction
-	END
+mklesskey() { # mklesskey
+	if [[ -f "$BOLLUX_CUSTOM_LESSKEY" ]]; then
+		log d "Using custom lesskey: '$BOLLUX_CUSTOM_LESSKEY'"
+		BOLLUX_LESSKEY="${BOLLUX_CUSTOM_LESSKEY}"
+	elif [[ ! -f "$BOLLUX_LESSKEY" ]]; then
+		log d "Generating lesskey: '$BOLLUX_LESSKEY'"
+		lesskey -o "$BOLLUX_LESSKEY" - <<END
+#command
+${KEY_OPEN} quit 0 # 48 open a link
+${KEY_GOTO} quit 1 # 49 goto a url
+${KEY_BACK} quit 2 # 50 back
+${KEY_FORWARD} quit 3 # 51 forward
+${KEY_REFRESH} quit 4 # 52 re-request / download
+${KEY_GOTO_FROM} quit 5 # 53 goto a url (pre-filled)
+${KEY_CYCLE_PRE} quit 6 # 54 cycle T_PRE_DISPLAY and refresh
+# other keybinds
+\\40 forw-screen-force
+h left-scroll
+l right-scroll
+? status   # 'status' will show a little help thing.
+= noaction
+END
+	else
+		log d "Found lesskey: '$BOLLUX_LESSKEY'"
+	fi
 }
 
 # normalize files
@@ -1081,6 +1103,9 @@ bollux_init() {
 	declare -a HISTORY # history is kept in an array
 	HN=0               # position of history in the array
 	run mkdir -p "${BOLLUX_HISTFILE%/*}"
+	# Remove $BOLLUX_LESSKEY and re-generate keybindings (to catch rebinds)
+	run rm "$BOLLUX_LESSKEY"
+	mklesskey
 }
 
 # clean up on exit