config: clarify meaning of command line scoping

CONFIG_SCOPE_CMDLINE is generally used in the code to refer to config
values passed in via the -c option.  Options passed in using this
mechanism share similar scoping characteristics with the --file and
--blob options of the 'config' command, namely that they are only in use
for that single invocation of git, and that they supersede the normal
system/global/local hierarchy.  This patch introduces
CONFIG_SCOPE_COMMAND to reflect this new idea, which also makes
CONFIG_SCOPE_CMDLINE redundant.

Signed-off-by: Matthew Rogers <mattr94@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

config.c

@@ -1737,7 +1737,7 @@ static int do_git_config_sequence(const struct config_options *opts,
 		free(path);
 	}
 
-	current_parsing_scope = CONFIG_SCOPE_CMDLINE;
+	current_parsing_scope = CONFIG_SCOPE_COMMAND;
 	if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0)
 		die(_("unable to parse command-line config"));
 
@@ -3305,8 +3305,8 @@ const char *config_scope_name(enum config_scope scope)
 		return "local";
 	case CONFIG_SCOPE_WORKTREE:
 		return "worktree";
-	case CONFIG_SCOPE_CMDLINE:
-		return "cmdline";
+	case CONFIG_SCOPE_COMMAND:
+		return "command";
 	default:
 		return "unknown";
 	}

config.h

@@ -300,7 +300,7 @@ enum config_scope {
 	CONFIG_SCOPE_GLOBAL,
 	CONFIG_SCOPE_LOCAL,
 	CONFIG_SCOPE_WORKTREE,
-	CONFIG_SCOPE_CMDLINE,
+	CONFIG_SCOPE_COMMAND,
 };
 const char *config_scope_name(enum config_scope scope);
 

t/t1308-config-set.sh

@@ -265,7 +265,7 @@ test_expect_success 'iteration shows correct origins' '
 	value=from-cmdline
 	origin=command line
 	name=
-	scope=cmdline
+	scope=command
 	EOF
 	GIT_CONFIG_PARAMETERS=$cmdline_config test-tool config iterate >actual &&
 	test_cmp expect actual