From f52c236c5b432629f0e074c3511e7e9d481197b1 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sat, 13 Aug 2022 13:48:11 +0800
Subject: vim-patch:8.2.0056: execution stack is incomplete and inefficient

Problem:    Execution stack is incomplete and inefficient.
Solution:   Introduce a proper execution stack and use it instead of
            sourcing_name/sourcing_lnum.  Create a string only when used.
https://github.com/vim/vim/commit/1a47ae32cdc19b0fd5a82e19fe5fddf45db1a506

Omit test_debugger.vim: superseded by later patches.
Omit check_map_keycodes(): N/A.
Omit kword_test.c: N/A (converted to a unit test).
---
 src/nvim/main.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

(limited to 'src/nvim/main.c')

diff --git a/src/nvim/main.c b/src/nvim/main.c
index 378ca6ba71..4dacf6948f 100644
--- a/src/nvim/main.c
+++ b/src/nvim/main.c
@@ -60,6 +60,7 @@
 #include "nvim/popupmnu.h"
 #include "nvim/profile.h"
 #include "nvim/quickfix.h"
+#include "nvim/runtime.h"
 #include "nvim/screen.h"
 #include "nvim/shada.h"
 #include "nvim/sign.h"
@@ -159,6 +160,7 @@ bool event_teardown(void)
 void early_init(mparm_T *paramp)
 {
   env_init();
+  estack_init();
   cmdline_init();
   eval_init();          // init global variables
   init_path(argv0 ? argv0 : "nvim");
@@ -1814,12 +1816,12 @@ static void exe_pre_commands(mparm_T *parmp)
 
   if (cnt > 0) {
     curwin->w_cursor.lnum = 0;     // just in case..
-    sourcing_name = _("pre-vimrc command line");
+    estack_push(ETYPE_ARGS, _("pre-vimrc command line"), 0);
     current_sctx.sc_sid = SID_CMDARG;
     for (i = 0; i < cnt; i++) {
       do_cmdline_cmd(cmds[i]);
     }
-    sourcing_name = NULL;
+    estack_pop();
     current_sctx.sc_sid = 0;
     TIME_MSG("--cmd commands");
   }
@@ -1841,7 +1843,7 @@ static void exe_commands(mparm_T *parmp)
   if (parmp->tagname == NULL && curwin->w_cursor.lnum <= 1) {
     curwin->w_cursor.lnum = 0;
   }
-  sourcing_name = "command line";
+  estack_push(ETYPE_ARGS, "command line", 0);
   current_sctx.sc_sid = SID_CARG;
   current_sctx.sc_seq = 0;
   for (i = 0; i < parmp->n_commands; i++) {
@@ -1850,7 +1852,7 @@ static void exe_commands(mparm_T *parmp)
       xfree(parmp->commands[i]);
     }
   }
-  sourcing_name = NULL;
+  estack_pop();
   current_sctx.sc_sid = 0;
   if (curwin->w_cursor.lnum == 0) {
     curwin->w_cursor.lnum = 1;
@@ -2059,17 +2061,14 @@ static int execute_env(char *env)
 {
   const char *initstr = os_getenv(env);
   if (initstr != NULL) {
-    char_u *save_sourcing_name = (char_u *)sourcing_name;
-    linenr_T save_sourcing_lnum = sourcing_lnum;
-    sourcing_name = env;
-    sourcing_lnum = 0;
+    estack_push(ETYPE_ENV, env, 0);
     const sctx_T save_current_sctx = current_sctx;
     current_sctx.sc_sid = SID_ENV;
     current_sctx.sc_seq = 0;
     current_sctx.sc_lnum = 0;
     do_cmdline_cmd((char *)initstr);
-    sourcing_name = (char *)save_sourcing_name;
-    sourcing_lnum = save_sourcing_lnum;
+
+    estack_pop();
     current_sctx = save_current_sctx;
     return OK;
   }
-- 
cgit