action/command: Allow multiple help pages to be opened

Author: JoeKar

internal/action/command.go

@@ -488,13 +488,15 @@ func (h *BufPane) HelpCmd(args []string) {
 			forceSplit = true
 		}
 
-		if config.FindRuntimeFile(config.RTHelp, topics[0]) != nil {
-			err := h.openHelp(topics[0], hsplit, forceSplit)
-			if err != nil {
-				InfoBar.Error(err)
+		for _, topic := range topics {
+			if config.FindRuntimeFile(config.RTHelp, topic) != nil {
+				err := h.openHelp(topic, hsplit, forceSplit)
+				if err != nil {
+					InfoBar.Error(err)
+				}
+			} else {
+				InfoBar.Error("Sorry, no help for ", topic)
 			}
-		} else {
-			InfoBar.Error("Sorry, no help for ", topics[0])
 		}
 	}
 }

runtime/help/commands.md

@@ -21,8 +21,9 @@ quotes here but these are not necessary when entering the command in micro.
    This command will modify `bindings.json` and overwrite any bindings to
    `key` that already exist.
 
-* `help ['topic'] ['flags']`: opens the corresponding help topic.
-   If no topic is provided opens the default help screen.
+* `help ['topic'] ['flags']`: opens the corresponding help topics.
+   If no topic is provided opens the default help screen. If multiple topics are
+   provided (separated via ` `) they are opened all as splits.
    Help topics are stored as `.md` files in the `runtime/help` directory of
    the source tree, which is embedded in the final binary.
    The `flags` are optional.