[gtk: 1/2] docs: Cover corner-case of @line_number = total lines in buffer

[Matthias Clasen <matthiasc src gnome org>]

commit 622bb9186ef1123a92a61613b0f5b46119bf5d3e
Author: Avinash Sonawane <rootkea gmail com>
Date:   Tue Mar 30 16:47:33 2021 +0530

    docs: Cover corner-case of @line_number = total lines in buffer

 gtk/gtktextbuffer.c | 6 +++---
 gtk/gtktextiter.c   | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtktextbuffer.c b/gtk/gtktextbuffer.c
index 6f2fd5534a..40faef526d 100644
--- a/gtk/gtktextbuffer.c
+++ b/gtk/gtktextbuffer.c
@@ -3250,7 +3250,7 @@ gtk_text_buffer_remove_all_tags (GtkTextBuffer     *buffer,
  * Note characters, not bytes; UTF-8 may encode one character as multiple
  * bytes.
  *
- * If @line_number is greater than the number of lines in the @buffer,
+ * If @line_number is greater than or equal to the number of lines in the @buffer,
  * the end iterator is returned. And if @char_offset is off the
  * end of the line, the iterator at the end of the line is returned.
  *
@@ -3301,7 +3301,7 @@ gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer,
  * @byte_index must be the start of a UTF-8 character. Note bytes, not
  * characters; UTF-8 may encode one character as multiple bytes.
  *
- * If @line_number is greater than the number of lines in the @buffer,
+ * If @line_number is greater than or equal to the number of lines in the @buffer,
  * the end iterator is returned. And if @byte_index is off the
  * end of the line, the iterator at the end of the line is returned.
  *
@@ -3348,7 +3348,7 @@ gtk_text_buffer_get_iter_at_line_index  (GtkTextBuffer *buffer,
  *
  * Initializes @iter to the start of the given line.
  *
- * If @line_number is greater than the number of lines
+ * If @line_number is greater than or equal to the number of lines
  * in the @buffer, the end iterator is returned.
  *
  * Returns: whether the exact position has been found
diff --git a/gtk/gtktextiter.c b/gtk/gtktextiter.c
index 24e25d9d85..9868110568 100644
--- a/gtk/gtktextiter.c
+++ b/gtk/gtktextiter.c
@@ -4052,7 +4052,7 @@ gtk_text_iter_set_visible_line_index (GtkTextIter *iter,
  *
  * Moves iterator @iter to the start of the line @line_number.
  *
- * If @line_number is negative or larger than the number of lines
+ * If @line_number is negative or larger than or equal to the number of lines
  * in the buffer, moves @iter to the start of the last line in the buffer.
  */
 void