Fix or remove outdated comments

* src/eval.c (funcall_lambda): Rewrite obsolete comment.
* src/bytecode.c (exec_byte_code): Remove lying comment and
unneeded #define.
* lisp/emacs-lisp/byte-opt.el: Remove car.  Keep pig.
(byte-compile-log-lap-1): Remove obsolete and irrelevant comment.

2 files changed, 9 insertions, 17 deletions

diff --git a/src/bytecode.c b/src/bytecode.c
index bda9a39b7f3..96f1f905812 100644
--- a/src/bytecode.c
+++ b/src/bytecode.c
@@ -458,17 +458,13 @@ exec_byte_code (Lisp_Object bytestr, Lisp_Object vector, Lisp_Object maxdepth,
 
 #ifdef BYTE_CODE_THREADED
 
-      /* A convenience define that saves us a lot of typing and makes
-	 the table clearer.  */
-#define LABEL(OP) [OP] = &&insn_ ## OP
-
       /* This is the dispatch table for the threaded interpreter.  */
       static const void *const targets[256] =
 	{
 	  [0 ... (Bconstant - 1)] = &&insn_default,
 	  [Bconstant ... 255] = &&insn_Bconstant,
 
-#define DEFINE(name, value) LABEL (name) ,
+#define DEFINE(name, value) [name] = &&insn_ ## name,
 	  BYTE_CODES
 #undef DEFINE
 	};
diff --git a/src/eval.c b/src/eval.c
index 7472e649afe..d3342289fbb 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -3243,19 +3243,15 @@ funcall_lambda (Lisp_Object fun, ptrdiff_t nargs,
   else if (COMPILEDP (fun))
     {
       syms_left = AREF (fun, COMPILED_ARGLIST);
+      /* Bytecode objects using lexical binding have an integral
+	 ARGLIST slot value: pass the arguments to the byte-code
+	 engine directly.  */
       if (FIXNUMP (syms_left))
-	/* A byte-code object with an integer args template means we
-	   shouldn't bind any arguments, instead just call the byte-code
-	   interpreter directly; it will push arguments as necessary.
-
-	   Byte-code objects with a nil args template (the default)
-	   have dynamically-bound arguments, and use the
-	   argument-binding code below instead (as do all interpreted
-	   functions, even lexically bound ones).  */
-	{
-	  return fetch_and_exec_byte_code (fun, XFIXNUM (syms_left),
-					   nargs, arg_vector);
-	}
+	return fetch_and_exec_byte_code (fun, XFIXNUM (syms_left),
+					 nargs, arg_vector);
+      /* Otherwise the bytecode object uses dynamic binding and the
+	 ARGLIST slot contains a standard formal argument list whose
+	 variables are bound dynamically below.  */
       lexenv = Qnil;
     }
 #ifdef HAVE_MODULES