core: update begin_processing() cmdlet signature

bshell.core/cmdlets/foreach-object.c

@@ -21,7 +21,9 @@ struct bshell_foreach_object_p {
 	bshell_scriptblock *f_block;
 };
 
-static enum bshell_status begin_processing(bshell_cmdlet *cmdlet)
+static enum bshell_status begin_processing(
+	bshell_cmdlet *cmdlet,
+	enum bshell_command_position position)
 {
 	struct bshell_foreach_object_p *p
 		= fx_object_get_private(cmdlet, BSHELL_TYPE_FOREACH_OBJECT);

bshell.core/cmdlets/get-command.c

@@ -22,7 +22,9 @@ struct bshell_get_command_p {
 	bool c_eof;
 };
 
-static enum bshell_status begin_processing(bshell_cmdlet *cmdlet)
+static enum bshell_status begin_processing(
+	bshell_cmdlet *cmdlet,
+	enum bshell_command_position position)
 {
 	struct bshell_get_command_p *p
 		= fx_object_get_private(cmdlet, BSHELL_TYPE_GET_COMMAND);

bshell.core/cmdlets/get-verb.c

@@ -20,7 +20,9 @@ struct bshell_get_verb_p {
 	const fx_iterator *c_it;
 };
 
-static enum bshell_status begin_processing(bshell_cmdlet *cmdlet)
+static enum bshell_status begin_processing(
+	bshell_cmdlet *cmdlet,
+	enum bshell_command_position position)
 {
 	struct bshell_get_verb_p *p
 		= fx_object_get_private(cmdlet, BSHELL_TYPE_GET_VERB);

bshell.core/cmdlets/write-output.c

@@ -68,7 +68,9 @@ static void write_value(
 	bshell_table_ctx_print_record(&cmd->w_table_ctx, value);
 }
 
-static enum bshell_status begin_processing(bshell_cmdlet *cmdlet)
+static enum bshell_status begin_processing(
+	bshell_cmdlet *cmdlet,
+	enum bshell_command_position position)
 {
 	struct bshell_write_output_p *p
 		= fx_object_get_private(cmdlet, BSHELL_TYPE_WRITE_OUTPUT);