Fix spelling

ast.rb

@@ -53,7 +53,7 @@ module RubyVM::AbstractSyntaxTree
   #     #  (ERROR@1:7-1:11),
   #     #  (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2))]
   #
-  #  Note that parsing continues even after the errored expresion.
+  #  Note that parsing continues even after the errored expression.
   #
   def self.parse string, keep_script_lines: false, error_tolerant: false, keep_tokens: false
     Primitive.ast_s_parse string, keep_script_lines, error_tolerant, keep_tokens

compile.c

@@ -4847,7 +4847,7 @@ when_vals(rb_iseq_t *iseq, LINK_ANCHOR *const cond_seq, const NODE *vals,
             if (!COMPILE(cond_seq, "when cond", val)) return -1;
         }
 
-        // Emit patern === target
+        // Emit pattern === target
         ADD_INSN1(cond_seq, vals, topn, INT2FIX(1));
         ADD_CALL(cond_seq, vals, idEqq, INT2FIX(1));
         ADD_INSNL(cond_seq, val, branchif, l1);

debug.c

@@ -450,7 +450,7 @@ check_filter(const char *str, const struct debug_log_filter *filter, bool *state
 //   (func_name or file_name) contains baz or boo
 //
 // RUBY_DEBUG_LOG_FILTER=foo,bar,-baz,-boo
-// retunrs true if
+// returns true if
 //   (func_name or file_name) contains foo or bar
 // or
 //   (func_name or file_name) doesn't contain baz and

gc.c

@@ -9792,7 +9792,7 @@ gc_exit(rb_objspace_t *objspace, enum gc_enter_event event, unsigned int *lock_l
 {
     GC_ASSERT(during_gc != 0);
 
-    gc_event_hook(objspace, RUBY_INTERNAL_EVENT_GC_EXIT, 0); /* TODO: which parameter should be passsed? */
+    gc_event_hook(objspace, RUBY_INTERNAL_EVENT_GC_EXIT, 0); /* TODO: which parameter should be passed? */
     gc_record(objspace, 1, gc_enter_event_cstr(event));
     RUBY_DEBUG_LOG("%s (%s)", gc_enter_event_cstr(event), gc_current_status(objspace));
     gc_report(1, objspace, "gc_exit: %s [%s]\n", gc_enter_event_cstr(event), gc_current_status(objspace));

io_buffer.c

@@ -783,7 +783,7 @@ rb_io_buffer_inspect(VALUE self)
     VALUE result = rb_io_buffer_to_s(self);
 
     if (io_buffer_validate(data)) {
-        // Limit the maximum size genearted by inspect.
+        // Limit the maximum size generated by inspect.
         if (data->size <= 256) {
             io_buffer_hexdump(result, 16, data->base, data->size, 0);
         }

iseq.c

@@ -3805,7 +3805,7 @@ succ_index_lookup(const struct succ_index_table *sd, int x)
  *  call-seq:
  *     iseq.script_lines -> array or nil
  *
- *  It returns recorded script lines if it is availalble.
+ *  It returns recorded script lines if it is available.
  *  The script lines are not limited to the iseq range, but
  *  are entire lines of the source file.
  *

object.c

@@ -3237,7 +3237,7 @@ rb_opts_exception_p(VALUE opts, int default_value)
  *    Integer(-1)               # => -1
  *
  *  With floating-point argument +object+ given,
- *  returns +object+ truncated to an intger:
+ *  returns +object+ truncated to an integer:
  *
  *    Integer(1.9)              # => 1  # Rounds toward zero.
  *    Integer(-1.9)             # => -1 # Rounds toward zero.

ractor.rb

@@ -19,7 +19,7 @@
 #     # fails immediately with
 #     # ArgumentError (can not isolate a Proc because it accesses outer variables (a).)
 #
-# The object must be explicity shared:
+# The object must be explicitly shared:
 #     a = 1
 #     r = Ractor.new(a) { |a1| puts "I am in Ractor! a=#{a1}"}
 #

string.c

@@ -333,7 +333,7 @@ rb_str_update_shared_ary(VALUE str, VALUE old_root, VALUE new_root)
         return;
     }
 
-    // if the root string isn't embedded, we don't need to touch the ponter.
+    // if the root string isn't embedded, we don't need to touch the pointer.
     // it already points to the shame shared buffer
     if (!STR_EMBED_P(new_root)) {
         return;