Fix missing completion for a few commands (#929)

complete.go

@@ -13,7 +13,9 @@ var (
 	gCmdWords = []string{
 		"set",
 		"map",
+		"cmap",
 		"cmd",
+		"quit",
 		"up",
 		"half-up",
 		"page-up",
@@ -24,20 +26,38 @@ var (
 		"scroll-down",
 		"updir",
 		"open",
-		"quit",
+		"jump-next",
+		"jump-prev",
 		"top",
 		"bottom",
+		"high",
+		"middle",
+		"low",
 		"toggle",
 		"invert",
 		"unselect",
+		"glob-select",
+		"glob-unselect",
+		"calcdirsize",
 		"copy",
 		"cut",
 		"paste",
 		"clear",
+		"sync",
+		"draw",
 		"redraw",
+		"load",
 		"reload",
-		"read",
+		"echo",
+		"echomsg",
+		"echoerr",
+		"cd",
+		"select",
+		"delete",
 		"rename",
+		"source",
+		"push",
+		"read",
 		"shell",
 		"shell-pipe",
 		"shell-wait",
@@ -53,22 +73,8 @@ var (
 		"filter",
 		"setfilter",
 		"mark-save",
-		"mark-remove",
 		"mark-load",
-		"draw",
-		"load",
-		"sync",
-		"echo",
-		"echomsg",
-		"echoerr",
-		"cd",
-		"calcdirsize",
-		"select",
-		"glob-select",
-		"glob-unselect",
-		"source",
-		"push",
-		"delete",
+		"mark-remove",
 		"tag",
 		"tag-toggle",
 	}
@@ -151,6 +157,7 @@ var (
 		"errorfmt",
 		"filesep",
 		"hiddenfiles",
+		"history",
 		"ifs",
 		"info",
 		"previewer",