nano

commit 699cacf7a4ef90224095ac2dcd9e052b8f74865c
parent 23cb26c58f04406196cade14b035f665b00d7187
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Tue, 25 Jun 2019 11:57:15 +0200

display: don't clear a row beforehand -- just clear the remainder

It is a waste of time to first fully clear a row when right afterward
text will be written to it (for most of the row, on average).  So...
just clear the part of the row after the written text.  Curses has the
perfect function for this: clrtoeol().

Diffstat:
M
src/winio.c
 | 
8
+++-----

1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/src/winio.c b/src/winio.c
@@ -2427,9 +2427,6 @@ void edit_draw(linestruct *fileptr, const char *converted,
 		 * might be beyond the null terminator of the string. */
 #endif
 
-	/* Wipe out any existing text on the row. */
-	blank_row(edit, row);
-
 #ifdef ENABLE_LINENUMBERS
 	/* If line numbering is switched on, put a line number in front of
 	 * the text -- but only for the parts that are not softwrapped. */
@@ -2437,10 +2434,10 @@ void edit_draw(linestruct *fileptr, const char *converted,
 		wattron(edit, interface_color_pair[LINE_NUMBER]);
 #ifndef NANO_TINY
 		if (ISSET(SOFTWRAP) && from_col != 0)
-			mvwprintw(edit, row, 0, "%*s", margin - 1, " ");
+			mvwprintw(edit, row, 0, "%*s", margin, " ");
 		else
 #endif
-			mvwprintw(edit, row, 0, "%*zd", margin - 1, fileptr->lineno);
+			mvwprintw(edit, row, 0, "%*zd ", margin - 1, fileptr->lineno);
 		wattroff(edit, interface_color_pair[LINE_NUMBER]);
 	}
 #endif
@@ -2448,6 +2445,7 @@ void edit_draw(linestruct *fileptr, const char *converted,
 	/* First simply write the converted line -- afterward we'll add colors
 	 * and the marking highlight on just the pieces that need it. */
 	mvwaddstr(edit, row, margin, converted);
+	wclrtoeol(edit);
 
 #ifdef USING_OLD_NCURSES
 	/* Tell ncurses to really redraw the line without trying to optimize