less: fix bracket search to match behavior of less 481

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 18 insertions, 9 deletions

diff --git a/miscutils/less.c b/miscutils/less.c
index 10e1d8e16..d1d4a71be 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -1589,18 +1589,23 @@ static char opp_bracket(char bracket)
 
 static void match_right_bracket(char bracket)
 {
-        unsigned i;
+        unsigned i = cur_fline;
 
-        if (cur_fline >= max_fline
-         || strchr(flines[cur_fline], bracket) == NULL
+        if (i >= max_fline
+         || strchr(flines[i], bracket) == NULL
         ) {
                 print_statusline("No bracket in top line");
                 return;
         }
+
         bracket = opp_bracket(bracket);
-        for (i = cur_fline + 1; i < max_fline; i++) {
+        for (; i < max_fline; i++) {
                 if (strchr(flines[i], bracket) != NULL) {
-                        buffer_line(i);
+                        /*
+                         * Line with matched right bracket becomes
+                         * last visible line
+                         */
+                        buffer_line(i - max_displayed_line);
                         return;
                 }
         }
@@ -1609,18 +1614,22 @@ static void match_right_bracket(char bracket)
 
 static void match_left_bracket(char bracket)
 {
-        int i;
+        int i = cur_fline + max_displayed_line;
 
-        if (cur_fline + max_displayed_line >= max_fline
-         || strchr(flines[cur_fline + max_displayed_line], bracket) == NULL
+        if (i >= max_fline
+         || strchr(flines[i], bracket) == NULL
         ) {
                 print_statusline("No bracket in bottom line");
                 return;
         }
 
         bracket = opp_bracket(bracket);
-        for (i = cur_fline + max_displayed_line; i >= 0; i--) {
+        for (; i >= 0; i--) {
                 if (strchr(flines[i], bracket) != NULL) {
+                        /*
+                         * Line with matched left bracket becomes
+                         * first visible line
+                         */
                         buffer_line(i);
                         return;
                 }