added hidden --fake-cmdline parameter for testing command-line editing

* Supports all immediate editing commands.
  Naturally it cannot emulate arbitrary key presses since there is no
  canonic ASCII-encoding of function keys.
  Key macros are not consequently also not testable.
  The --fake-cmdline parameter is instead treated very similar to
  a key macro expansion.
* Most importantly this allows adding test cases for rubout behavior
  and bugs that are quite common.
* Added regression test cases for the last two rubout bugs.
* It's not easy to pass control codes in command line arguments in
  a portable manner, so the test cases will often use { and }.
  Control codes could be used e.g. by defining variables like
  RUBOUT=`printf '\b'`
  and referencing them with ${RUBOUT}.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index eb3c0b4..5b3b8cf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -105,6 +105,7 @@ teco_get_default_config_path(const gchar *program)
 static gchar *teco_eval_macro = NULL;
 static gboolean teco_mung_file = FALSE;
 static gboolean teco_mung_profile = TRUE;
+static gchar *teco_fake_cmdline = NULL;
 static gboolean teco_8bit_clean = FALSE;
 
 static gchar *
@@ -121,6 +122,9 @@ teco_process_options(gchar ***argv)
 		 "Do not mung "
 		 "$SCITECOCONFIG" G_DIR_SEPARATOR_S INI_FILE " "
 		 "even if it exists"},
+		{"fake-cmdline", 0, G_OPTION_FLAG_HIDDEN,
+		 G_OPTION_ARG_STRING, &teco_fake_cmdline,
+		 "Emulate key presses in batch mode (for debugging)", "keys"},
 		{"8bit", '8', 0, G_OPTION_ARG_NONE, &teco_8bit_clean,
 		 "Use ANSI encoding by default and disable automatic EOL conversion"},
 		{NULL}
@@ -437,6 +441,15 @@ main(int argc, char **argv)
 	 */
 	teco_machine_main_init(&teco_cmdline.machine, &local_qregs, TRUE);
 
+	if (G_UNLIKELY(teco_fake_cmdline != NULL)) {
+		if (!teco_cmdline_keypress(teco_fake_cmdline, strlen(teco_fake_cmdline), &error) &&
+		    !g_error_matches(error, TECO_ERROR, TECO_ERROR_QUIT)) {
+			teco_error_add_frame_toplevel();
+			goto error;
+		}
+		goto cleanup;
+	}
+
 	if (!teco_interface_event_loop(&error))
 		goto error;