Add DA and DECID sequences

These sequences are used by the host in order to can detect which kind of
terminal is connected. St will answer like a vt102 terminal with this patch.
---
 st.c |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/st.c b/st.c
index ba44b1c..85b0b59 100644 (file)
--- a/st.c
+++ b/st.c
@@ -72,6 +72,8 @@
 #define X2COL(x) (((x) - BORDER)/xw.cw)
 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
 
+#define VT102ID "\033[?6c"
+
 enum glyph_attribute {
        ATTR_NULL      = 0,
        ATTR_REVERSE   = 1,
@@ -1510,6 +1512,10 @@ csihandle(void) {
                DEFAULT(csiescseq.arg[0], 1);
                tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
                break;
+       case 'c': /* DA -- Device Attributes */
+               if(csiescseq.arg[0] == 0)
+                       ttywrite(VT102ID, sizeof(VT102ID));
+               break;
        case 'C': /* CUF -- Cursor <n> Forward */
        case 'a':
                DEFAULT(csiescseq.arg[0], 1);
@@ -1933,6 +1939,9 @@ tputc(char *c, int len) {
                                }
                                term.esc = 0;
                                break;
+                       case 'Z': /* DECID -- Identify Terminal */
+                               ttywrite(VT102ID, sizeof(VT102ID));
+                               break;
                        case 'c': /* RIS -- Reset to inital state */
                                treset();
                                term.esc = 0;