lineedit: mostly revert recent wrong logic in "ask terminal" code

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

diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index a62ab6d295c7b61ce97a75394518e58dbf9d82fd..6df556f4e24201b5003fc890eac33dbd30384887 100644 (file)
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -149,7 +149,6 @@ struct lineedit_statics {
        CHAR_T delbuf[DELBUFSIZ];  /* a place to store deleted characters */
 #endif
 #if ENABLE_FEATURE_EDITING_ASK_TERMINAL
-       smallint unknown_width;
        smallint sent_ESC_br6n;
 #endif
 
@@ -1611,16 +1610,14 @@ static void ask_terminal(void)
         * poll([{fd=0, events=POLLIN}], 1, 4294967295) = 1 ([{fd=0, revents=POLLIN}])
         * read(0, "\n", 1)      = 1  <-- oh crap, user's input got in first
         */
-       if (S.unknown_width) { /* only if window size is not known */
-               struct pollfd pfd;
-
-               pfd.fd = STDIN_FILENO;
-               pfd.events = POLLIN;
-               if (safe_poll(&pfd, 1, 0) == 0) {
-                       S.sent_ESC_br6n = 1;
-                       fputs("\033" "[6n", stdout);
-                       fflush_all(); /* make terminal see it ASAP! */
-               }
+       struct pollfd pfd;
+
+       pfd.fd = STDIN_FILENO;
+       pfd.events = POLLIN;
+       if (safe_poll(&pfd, 1, 0) == 0) {
+               S.sent_ESC_br6n = 1;
+               fputs("\033" "[6n", stdout);
+               fflush_all(); /* make terminal see it ASAP! */
        }
 }
 #else
@@ -1768,7 +1765,7 @@ static void win_changed(int nsig)
 {
        int sv_errno = errno;
        unsigned width;
-       IF_FEATURE_EDITING_ASK_TERMINAL(S.unknown_width =) get_terminal_width_height(0, &width, NULL);
+       get_terminal_width_height(0, &width, NULL);
        cmdedit_setwidth(width, nsig /* - just a yes/no flag */);
        if (nsig == SIGWINCH)
                signal(SIGWINCH, win_changed); /* rearm ourself */