Fix bug in input(); add comments to cases in compile().

diff --git a/Python/compile.c b/Python/compile.c
index 87acf39acfa9e7a0302cace419d0352b4eba29d4..1256bd55f9de45fbd0b9ee9c7b8a920d839b2837 100644 (file)
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1680,7 +1680,7 @@ compile_node(c, n)
        
        switch (TYPE(n)) {
        
-       case single_input:
+       case single_input: /* One interactive command */
                /* NEWLINE | simple_stmt | compound_stmt NEWLINE */
                com_addbyte(c, REFUSE_ARGS);
                n = CHILD(n, 0);
@@ -1690,31 +1690,30 @@ compile_node(c, n)
                com_addbyte(c, RETURN_VALUE);
                break;
        
-       case file_input:
+       case file_input: /* A whole file, or built-in function exec() */
                com_addbyte(c, REFUSE_ARGS);
                com_file_input(c, n);
                com_addoparg(c, LOAD_CONST, com_addconst(c, None));
                com_addbyte(c, RETURN_VALUE);
                break;
        
-       case expr_input:
+       case expr_input: /* Built-in function eval() */
                com_addbyte(c, REFUSE_ARGS);
                com_node(c, CHILD(n, 0));
-               com_addoparg(c, LOAD_CONST, com_addconst(c, None));
                com_addbyte(c, RETURN_VALUE);
                break;
        
-       case eval_input:
+       case eval_input: /* Built-in function input() */
                com_addbyte(c, REFUSE_ARGS);
                com_node(c, CHILD(n, 0));
                com_addbyte(c, RETURN_VALUE);
                break;
        
-       case funcdef:
+       case funcdef: /* A function definition */
                compile_funcdef(c, n);
                break;
        
-       case classdef:
+       case classdef: /* A class definition */
                /* 'class' NAME parameters ['=' baselist] ':' suite */
                com_addbyte(c, REFUSE_ARGS);
                com_node(c, CHILD(n, NCH(n)-1));