tweaks: reshuffle some regexes, for order and compactness

syntax/nanohelp.nanorc

@@ -4,9 +4,8 @@
 syntax "nanohelp"
 
 # Key combos:
-color cyan "\^([]4-8A-Z^\_←→↑↓]|Home|End)"  "[←→↑↓]"
-color cyan "\<(Tab|Enter|Home|End|Ins|Del|Bsp|PgUp|PgDn|Up|Down|Left|Right)\>"
-color cyan "\<M-."  "\<F1?[0-9]"  "(\^|M-)Space"
+color cyan "\^[]4-8A-Z^\_←→↑↓]"  "[←→↑↓]"  "(\^|M-)Space"  "\<M-."  "\<F1?[0-9]"
+color cyan "\<(Tab|Enter|Ins|Del|Bsp|Up|Down|Left|Right|Home|End|PgUp|PgDn)\>"
 
 # Quoted indicators:
 color brightred "'(\^|M-)'"