xC: fix some corner cases around terminal handling

1 files changed, 13 insertions, 3 deletions

diff --git a/xC.c b/xC.c
index 74f34e3..9664cb7 100644
--- a/xC.c
+++ b/xC.c
@@ -789,7 +789,7 @@ input_el__redisplay (void *input)
 static char *
 input_el__make_prompt (EditLine *editline)
 {
-	struct input_el *self;
+	struct input_el *self = NULL;
 	el_get (editline, EL_CLIENTDATA, &self);
 	if (!self->prompt)
 		return "";
@@ -1058,8 +1058,13 @@ input_el_buffer_switch (void *input, input_buffer_t input_buffer)
 static void
 input_el_buffer_destroy (void *input, input_buffer_t input_buffer)
 {
-	(void) input;
+	struct input_el *self = input;
 	struct input_el_buffer *buffer = input_buffer;
+	if (self->active && self->current == buffer)
+	{
+		el_wset (self->editline, EL_HIST, history, NULL);
+		self->current = NULL;
+	}
 
 	history_wend (buffer->history);
 	free (buffer->saved_line);
@@ -4349,6 +4354,10 @@ buffer_print_read_marker (struct app_context *ctx, FILE *stream, int flush_opts)
 static void
 buffer_print_backlog (struct app_context *ctx, struct buffer *buffer)
 {
+	// Buffers can be activated, or their lines modified, as automatic actions.
+	if (ctx->terminal_suspended)
+		return;
+
 	// The prompt can take considerable time to redraw
 	CALL (ctx->input, hide);
 
@@ -11269,7 +11278,8 @@ handle_command_buffer (struct handler_args *a)
 	else if (!strcasecmp_ascii (action, "clear"))
 	{
 		buffer_clear (a->buffer);
-		buffer_print_backlog (ctx, a->buffer);
+		if (a->buffer == ctx->current_buffer)
+			buffer_print_backlog (ctx, a->buffer);
 	}
 	else if (!strcasecmp_ascii (action, "move"))
 		result = handle_buffer_move (ctx, a);