<nEL> (set EOL mode) now sets the buffer's dirty flag

* While it doesn't directly change the buffer's contents in bytes,
  a subsequent write would result in a different file on disk,
  so it is consequent to remind the user of saving or discarding changes.
* Will also fix :EX after changing the EOL mode.

2 files changed, 7 insertions, 4 deletions

diff --git a/TODO b/TODO
index 930dd3a..016973e 100644
--- a/TODO
+++ b/TODO
@@ -420,10 +420,6 @@ Features:
    byte offsets. This would mainly be useful in ^E\^E.
  * EL command could also be used to convert all EOLs in the current
    buffer.
- * nEL should perhaps dirtify the buffer, at least when automatic
-   EOL translation is active, or always (see above).
-   The dirty flag exists to remind users to save their buffers and
-   nEL changes the result of a Save.
  * exclusive access to all opened files/buffers (locking):
    SciTECO will never be able to notice when a file has been
    changed externally. Also reversing a file write will overwrite
diff --git a/src/core-commands.c b/src/core-commands.c
index ae51ecc..287a9a3 100644
--- a/src/core-commands.c
+++ b/src/core-commands.c
@@ -2337,6 +2337,13 @@ teco_state_ecommand_eol(teco_machine_main_t *ctx, GError **error)
 			undo__teco_interface_ssm(SCI_SETEOLMODE,
 			                         teco_interface_ssm(SCI_GETEOLMODE, 0, 0), 0);
 		teco_interface_ssm(SCI_SETEOLMODE, eol_mode, 0);
+
+		/*
+		 * While the buffer contents were not changed,
+		 * the result of saving the file may differ,
+		 * so we still dirtify the buffer.
+		 */
+		teco_ring_dirtify();
 	} else if (teco_machine_main_eval_colon(ctx) > 0) {
 		const gchar *eol_seq = teco_eol_get_seq(teco_interface_ssm(SCI_GETEOLMODE, 0, 0));
 		teco_expressions_push(eol_seq);