ensure "make build" on macos generates the same documentation output

it has been i while since i used the old macos machine...

gendoc.sh

@@ -25,15 +25,9 @@ any parameters. Followed by the help and usage information for each command.
 
 EOF
 
-./mox 2>&1 | sed 's/^\( *\|usage: \)/\t/'
-
-cat <<EOF
-
-EOF
-
-# setting XDG_CONFIG_HOME ensures "mox localserve" has reasonable default
-# values in its help output.
-XDG_CONFIG_HOME='$userconfigdir' ./mox helpall 2>&1
+./mox 2>&1 | sed -e 's/^usage: */\t/' -e 's/^  */\t/'
+echo
+./mox helpall 2>&1
 
 cat <<EOF
 */

localserve.go

@@ -66,6 +66,11 @@ during those commands instead of during "data".
 	if userConfDir == "" {
 		userConfDir = "."
 	}
+	// If we are being run to gather help output, show a placeholder directory
+	// instead of evaluating to the actual userconfigdir on the host os.
+	if c._gather {
+		userConfDir = "$userconfigdir"
+	}
 
 	var dir, ip string
 	var initOnly bool