neovim-libvterm-0-2-support.patch

From 7a1b90ed10e7626d061ee0ba7b0b321151c44c7d Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Tue, 8 Feb 2022 18:58:36 +0100
Subject: [PATCH 1/2] refactor(term): use const for title and add len to
 buf_set_term_title()

---
 src/nvim/terminal.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Index: neovim-0.6.1/src/nvim/terminal.c
===================================================================
--- neovim-0.6.1.orig/src/nvim/terminal.c	2022-02-09 21:11:11.374493070 +0100
+++ neovim-0.6.1/src/nvim/terminal.c	2022-02-09 21:11:11.407493071 +0100
@@ -118,6 +118,10 @@ struct terminal {
   // window height has increased) and must be deleted from the terminal buffer
   int sb_pending;
 
+  char *title;     // VTermStringFragment buffer
+  size_t title_len;    // number of rows pushed to sb_buffer
+  size_t title_size;   // sb_buffer size
+
   // buf_T instance that acts as a "drawing surface" for libvterm
   // we can't store a direct reference to the buffer because the
   // refresh_timer_cb may be called after the buffer was freed, and there's
@@ -222,7 +226,7 @@ Terminal *terminal_open(buf_T *buf, Term
   set_option_value("wrap", false, NULL, OPT_LOCAL);
   set_option_value("list", false, NULL, OPT_LOCAL);
   if (buf->b_ffname != NULL) {
-    buf_set_term_title(buf, (char *)buf->b_ffname);
+    buf_set_term_title(buf, (char *)buf->b_ffname, strlen((char *)buf->b_ffname));
   }
   RESET_BINDING(curwin);
   // Reset cursor in current window.
@@ -588,6 +592,7 @@ void terminal_destroy(Terminal *term)
       xfree(term->sb_buffer[i]);
     }
     xfree(term->sb_buffer);
+    xfree(term->title);
     vterm_free(term->vt);
     xfree(term);
   }
@@ -810,13 +815,13 @@ static int term_movecursor(VTermPos new,
   return 1;
 }
 
-static void buf_set_term_title(buf_T *buf, char *title)
+static void buf_set_term_title(buf_T *buf, const char *title, size_t len)
   FUNC_ATTR_NONNULL_ALL
 {
   Error err = ERROR_INIT;
   dict_set_var(buf->b_vars,
                STATIC_CSTR_AS_STRING("term_title"),
-               STRING_OBJ(cstr_as_string(title)),
+               STRING_OBJ(((String){ .data = (char *)title, .size = len })),
                false,
                false,
                &err);
@@ -839,7 +844,34 @@ static int term_settermprop(VTermProp pr
 
   case VTERM_PROP_TITLE: {
     buf_T *buf = handle_get_buffer(term->buf_handle);
-    buf_set_term_title(buf, val->string);
+#if VTERM_VERSION_MAJOR > 0 || (VTERM_VERSION_MAJOR == 0 && VTERM_VERSION_MINOR >= 2)
+    VTermStringFragment frag = val->string;
+
+    if (frag.initial && frag.final) {
+      buf_set_term_title(buf, frag.str, frag.len);
+      break;
+    }
+
+    if (frag.initial) {
+      term->title_len = 0;
+      term->title_size = MAX(frag.len, 1024);
+      term->title = xmalloc(sizeof(char *) * term->title_size);
+    } else if (term->title_len + frag.len > term->title_size) {
+        term->title_size *= 2;
+        term->title = xrealloc(term->title, sizeof(char *) * term->title_size);
+    }
+
+    memcpy(term->title + term->title_len, frag.str, frag.len);
+    term->title_len += frag.len;
+
+    if (frag.final) {
+      buf_set_term_title(buf, term->title, term->title_len);
+      xfree(term->title);
+      term->title = NULL;
+    }
+#else
+    buf_set_term_title(buf, val->string, strlen(val->string));
+#endif
     break;
   }