Optimize hot loops with direct access, LUTs, and closed-form formulas

1 files changed, 9 insertions, 5 deletions

diff --git a/src/escape.c b/src/escape.c
index fc254af..1e56d77 100644
--- a/src/escape.c
+++ b/src/escape.c
@@ -293,6 +293,7 @@ static void restore_deccir(struct term *t, const char *p, const char *end)
 static void restore_dectabsr(struct term *t, const char *p, const char *end)
 {
     term_tabs_clear(t);
+    t->custom_tabs = true;
     int stop = 0, any = 0;
     for (; p < end; p++) {
         if (*p >= '0' && *p <= '9') {
@@ -317,9 +318,7 @@ static bool dcs_reserve(struct term *t, size_t extra)
         return true;
     if (t->dcs_cap >= TERM_OSC_MAX)
         return false;
-    size_t cap = t->dcs_cap ? t->dcs_cap : 256;
-    while (cap < need && cap < TERM_OSC_MAX)
-        cap *= 2;
+    size_t cap = term_grow_cap(t->dcs_cap ? t->dcs_cap : 256, need);
     if (cap > TERM_OSC_MAX)
         cap = TERM_OSC_MAX;
     char *p = realloc(t->dcs_buf, cap);
@@ -726,8 +725,12 @@ static inline TERM_ALWAYS_INLINE void dispatch_csi(struct term *t, const struct
         term_sc_tab(t, csi->final == 'I' ? csi_count(csi) : -csi_count(csi));
         break;
     case 'g':
-        if (csi->params[0] == 0) t->tabs[t->cursor_x] = 0;
-        else if (csi->params[0] == 3) term_tabs_clear(t);
+        if (csi->params[0] == 0) {
+            t->tabs[t->cursor_x] = 0;
+            t->custom_tabs = true;
+        } else if (csi->params[0] == 3) {
+            term_tabs_clear(t);
+        }
         break;
     case 'W':
         if (csi->prefix == '?' && csi->params[0] == 5) {
@@ -871,6 +874,7 @@ static void dispatch_esc(struct term *t, unsigned char ch)
         break;
     case 'H':
         t->tabs[t->cursor_x] = 1;
+        t->custom_tabs = true;
         break;
     case 'c':
         if (t->alternate) term_screen_set_alternate(t, false);