Fix copy of line with len = 0

[st.git] / st.c

diff --git a/st.c b/st.c
index e76aaf3..bd8b815 100644 (file)
--- a/st.c
+++ b/st.c
@@ -17,6 +17,7 @@
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <termios.h>
 #include <time.h>
 #include <unistd.h>
 #include <libgen.h>
@@ -333,6 +334,7 @@ static void xzoomreset(const Arg *);
 static void printsel(const Arg *);
 static void printscreen(const Arg *) ;
 static void toggleprinter(const Arg *);
+static void sendbreak(const Arg *);
 
 /* Config.h for applying patches and the configuration. */
 #include "config.h"
@@ -1002,7 +1004,10 @@ getsel(void)
 
        /* append every set & selected glyph to the selection */
        for (y = sel.nb.y; y <= sel.ne.y; y++) {
-               linelen = tlinelen(y);
+               if ((linelen = tlinelen(y)) == 0) {
+                       *ptr++ = '\n';
+                       continue;
+               }
 
                if (sel.type == SEL_RECTANGULAR) {
                        gp = &term.line[y][sel.nb.x];
@@ -2578,6 +2583,13 @@ strreset(void)
        memset(&strescseq, 0, sizeof(strescseq));
 }
 
+void
+sendbreak(const Arg *arg)
+{
+       if (tcsendbreak(cmdfd, 0))
+               perror("Error sending break");
+}
+
 void
 tprinter(char *s, size_t len)
 {
@@ -2774,18 +2786,37 @@ tcontrolcode(uchar ascii)
        case '\023': /* XOFF (IGNORED) */
        case 0177:   /* DEL (IGNORED) */
                return;
+       case 0x80:   /* TODO: PAD */
+       case 0x81:   /* TODO: HOP */
+       case 0x82:   /* TODO: BPH */
+       case 0x83:   /* TODO: NBH */
        case 0x84:   /* TODO: IND */
                break;
        case 0x85:   /* NEL -- Next line */
                tnewline(1); /* always go to first col */
                break;
+       case 0x86:   /* TODO: SSA */
+       case 0x87:   /* TODO: ESA */
+               break;
        case 0x88:   /* HTS -- Horizontal tab stop */
                term.tabs[term.c.x] = 1;
                break;
+       case 0x89:   /* TODO: HTJ */
+       case 0x8a:   /* TODO: VTS */
+       case 0x8b:   /* TODO: PLD */
+       case 0x8c:   /* TODO: PLU */
        case 0x8d:   /* TODO: RI */
        case 0x8e:   /* TODO: SS2 */
        case 0x8f:   /* TODO: SS3 */
+       case 0x91:   /* TODO: PU1 */
+       case 0x92:   /* TODO: PU2 */
+       case 0x93:   /* TODO: STS */
+       case 0x94:   /* TODO: CCH */
+       case 0x95:   /* TODO: MW */
+       case 0x96:   /* TODO: SPA */
+       case 0x97:   /* TODO: EPA */
        case 0x98:   /* TODO: SOS */
+       case 0x99:   /* TODO: SGCI */
                break;
        case 0x9a:   /* DECID -- Identify Terminal */
                ttywrite(vtiden, sizeof(vtiden) - 1);
@@ -2794,9 +2825,9 @@ tcontrolcode(uchar ascii)
        case 0x9c:   /* TODO: ST */
                break;
        case 0x90:   /* DCS -- Device Control String */
-       case 0x9f:   /* APC -- Application Program Command */
-       case 0x9e:   /* PM -- Privacy Message */
        case 0x9d:   /* OSC -- Operating System Command */
+       case 0x9e:   /* PM -- Privacy Message */
+       case 0x9f:   /* APC -- Application Program Command */
                tstrsequence(ascii);
                return;
        }
@@ -2896,15 +2927,15 @@ tputc(Rune u)
        int width, len;
        Glyph *gp;
 
+       control = ISCONTROL(u);
        len = utf8encode(u, c);
-       if ((width = wcwidth(u)) == -1) {
+       if (!control && (width = wcwidth(u)) == -1) {
                memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
                width = 1;
        }
 
        if (IS_SET(MODE_PRINT))
                tprinter(c, len);
-       control = ISCONTROL(u);
 
        /*
         * STR sequence must be checked before anything else
@@ -4275,7 +4306,7 @@ usage(void)
        "          [-i] [-t title] [-T title] [-w windowid] [-e command ...]"
        " [command ...]\n"
        "       st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
-       "          [-i] [-t title] [-T title] [-w windowid] [-l line]"
+       "          [-i] [-t title] [-T title] [-w windowid] -l line"
        " [stty_args ...]\n",
        argv0);
 }
@@ -4287,7 +4318,7 @@ main(int argc, char *argv[])
 
        xw.l = xw.t = 0;
        xw.isfixed = False;
-       xw.cursor = 0;
+       xw.cursor = cursorshape;
 
        ARGBEGIN {
        case 'a':