1 files changed, 9 insertions, 3 deletions
diff --git a/screen.c b/screen.c
index e81f037..5729a68 100644
--- a/screen.c
+++ b/screen.c
@@ -10,6 +10,12 @@
 
 /*** screen management functions ***/
 
+/*** _isblank ***/
+
+int _isblank(int c){
+	return c==32 || c==9 ? 1 : 0;
+}
+
 
 /*** Status bar ***/
 
@@ -161,7 +167,7 @@ void erase_blank_lines(int y1, int y2){
 	
 	for (; y1 <= y2; y1++){
 		j = screen.l[y1].lst; 
-		while (j>=0 && isblank(screen.l[y1].s[j]))
+		while (j>=0 && _isblank(screen.l[y1].s[j]))
 			j--;
 		if (j<0){
 			screen.l[y1].lst = -1;
@@ -430,12 +436,12 @@ void find_nonblank_rect(int *x1, int *y1, int *x2, int *y2){
 		if (i < *y1)
 			*y1 = i;
 		j = 0;
-		while((j <= screen.l[i].lst)  && isblank(first=screen.l[i].s[j]))
+		while((j <= screen.l[i].lst)  && _isblank(first=screen.l[i].s[j]))
 			j++;
 		if (j < *x1)
 			*x1 = j;
 		j = screen.l[i].lst;
-		while(isblank(screen.l[i].s[j]))
+		while(_isblank(screen.l[i].s[j]))
 			j--;
 		if (j > *x2)
 			*x2 = j;