improve code comments

brag/brag/codegen/runtime.rkt

@@ -187,7 +187,7 @@ This would be the place to check a syntax property for hiding.
    ;; each `component-list` is a list that's either empty, or has a single component-stx object
    ;; inside `component-stx` is a name followed by subcomponents
    (for*/list ([component-list (in-list component-lists)]
-               [component-stx (in-list component-list)]) ; this has the effect of omitting empty component-lists
+               [component-stx (in-list component-list)]) ; this has the effect of omitting any empty `component-list`
               (list
                (cond
                  [(eq? (syntax-property component-stx 'hide-or-splice) 'hide)

brag/brag/rules/parser.rkt

@@ -96,7 +96,7 @@
                       #f)
               $2))]
      
-     [(RULE_HEAD_HIDDEN pattern) ; bang indicates hiding
+     [(RULE_HEAD_HIDDEN pattern) ; slash indicates hiding
       (begin
         (define trimmed (cadr (regexp-match (pregexp (format "~a(\\S+)\\s*:$" hide-char)) $1)))
         (rule (position->pos $1-start-pos)
@@ -111,7 +111,7 @@
                       ''hide) ; symbol needs to be double quoted in this case
               $2))]
      
-     [(RULE_HEAD_SPLICED pattern) ;atsign indicates splicinh
+     [(RULE_HEAD_SPLICED pattern) ; atsign indicates splicing
       (begin
         (define trimmed (cadr (regexp-match (pregexp (format "~a(\\S+)\\s*:$" splice-char)) $1)))
         (rule (position->pos $1-start-pos)