Marginally more robust glibc version test for sync_file_range detection.

[redis.git] / deps / linenoise / linenoise.c

diff --git a/deps/linenoise/linenoise.c b/deps/linenoise/linenoise.c
index dd43413661ca9677c51667ca657daeca50706307..18a15cc45ccb6d739b0ed9f2ed2a5b43e2d5c391 100644 (file)
--- a/deps/linenoise/linenoise.c
+++ b/deps/linenoise/linenoise.c
@@ -279,7 +279,9 @@ static int completeLine(int fd, const char *prompt, char *buf, size_t buflen, si
 }
 
 void linenoiseClearScreen(void) {
-    write(STDIN_FILENO,"\x1b[H\x1b[2J",7);
+    if (write(STDIN_FILENO,"\x1b[H\x1b[2J",7) <= 0) {
+        /* nothing to do, just to avoid warning. */
+    }
 }
 
 static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt) {
@@ -318,10 +320,9 @@ static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt)
 
         switch(c) {
         case 13:    /* enter */
-        case 4:     /* ctrl-d */
             history_len--;
             free(history[history_len]);
-            return (len == 0 && c == 4) ? -1 : (int)len;
+            return (int)len;
         case 3:     /* ctrl-c */
             errno = EAGAIN;
             return -1;
@@ -335,6 +336,18 @@ static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt)
                 refreshLine(fd,prompt,buf,len,pos,cols);
             }
             break;
+        case 4:     /* ctrl-d, remove char at right of cursor */
+            if (len > 1 && pos < (len-1)) {
+                memmove(buf+pos,buf+pos+1,len-pos);
+                len--;
+                buf[len] = '\0';
+                refreshLine(fd,prompt,buf,len,pos,cols);
+            } else if (len == 0) {
+                history_len--;
+                free(history[history_len]);
+                return -1;
+            }
+            break;
         case 20:    /* ctrl-t */
             if (pos > 0 && pos < len) {
                 int aux = buf[pos-1];