From ffa1335047047ac00280ac742bcc6dfcc7fa3589 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sat, 20 Aug 2022 07:54:14 +0800
Subject: vim-patch:8.2.4726: cannot use expand() to get the script name

Problem:    Cannot use expand() to get the script name.
Solution:   Support expand('<script>'). (closes vim/vim#10121)
https://github.com/vim/vim/commit/6013d0045dec7ca7c0068fbe186c42d754a7368b

Use `.sn_name` instead of `->sn_name` as v8.2.0154 hasn't been ported.
Cherry-pick builtin.txt expand() doc from latest Vim.
---
 src/nvim/ex_docmd.c              | 29 +++++++++++++++++++----
 src/nvim/runtime.c               | 24 ++++++++++++++++++-
 src/nvim/runtime.h               |  1 +
 src/nvim/testdir/test_expand.vim | 50 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 99 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 5e8c7dbdda..ac2a65844f 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -94,6 +94,12 @@ static char e_ambiguous_use_of_user_defined_command[]
   = N_("E464: Ambiguous use of user-defined command");
 static char e_not_an_editor_command[]
   = N_("E492: Not an editor command");
+static char e_no_source_file_name_to_substitute_for_sfile[]
+  = N_("E498: no :source file name to substitute for \"<sfile>\"");
+static char e_no_call_stack_to_substitute_for_stack[]
+  = N_("E489: no call stack to substitute for \"<stack>\"");
+static char e_no_script_file_name_to_substitute_for_script[]
+  = N_("E1274: No script file name to substitute for \"<script>\"");
 
 static int quitmore = 0;
 static bool ex_pressedreturn = false;
@@ -6564,6 +6570,7 @@ enum {
   SPEC_SFILE,
   SPEC_SLNUM,
   SPEC_STACK,
+  SPEC_SCRIPT,
   SPEC_AFILE,
   SPEC_ABUF,
   SPEC_AMATCH,
@@ -6588,6 +6595,7 @@ ssize_t find_cmdline_var(const char_u *src, size_t *usedlen)
     [SPEC_SFILE] = "<sfile>",           // ":so" file name
     [SPEC_SLNUM] = "<slnum>",           // ":so" file line number
     [SPEC_STACK] = "<stack>",           // call stack
+    [SPEC_SCRIPT] = "<script>",         // script file name
     [SPEC_AFILE] = "<afile>",           // autocommand file name
     [SPEC_ABUF] = "<abuf>",             // autocommand buffer number
     [SPEC_AMATCH] = "<amatch>",         // autocommand match name
@@ -6801,12 +6809,25 @@ char_u *eval_vars(char_u *src, char_u *srcstart, size_t *usedlen, linenr_T *lnum
       break;
 
     case SPEC_SFILE:            // file name for ":so" command
+      result = estack_sfile(ESTACK_SFILE);
+      if (result == NULL) {
+        *errormsg = _(e_no_source_file_name_to_substitute_for_sfile);
+        return NULL;
+      }
+      resultbuf = result;  // remember allocated string
+      break;
     case SPEC_STACK:            // call stack
-      result = estack_sfile(spec_idx == SPEC_SFILE ? ESTACK_SFILE : ESTACK_STACK);
+      result = estack_sfile(ESTACK_STACK);
+      if (result == NULL) {
+        *errormsg = _(e_no_call_stack_to_substitute_for_stack);
+        return NULL;
+      }
+      resultbuf = result;  // remember allocated string
+      break;
+    case SPEC_SCRIPT:           // script file name
+      result = estack_sfile(ESTACK_SCRIPT);
       if (result == NULL) {
-        *errormsg = spec_idx == SPEC_SFILE
-          ? _("E498: no :source file name to substitute for \"<sfile>\"")
-          : _("E489: no call stack to substitute for \"<stack>\"");
+        *errormsg = _(e_no_script_file_name_to_substitute_for_script);
         return NULL;
       }
       resultbuf = result;  // remember allocated string
diff --git a/src/nvim/runtime.c b/src/nvim/runtime.c
index 537c496ae2..412b78728e 100644
--- a/src/nvim/runtime.c
+++ b/src/nvim/runtime.c
@@ -100,7 +100,8 @@ void estack_pop(void)
 }
 
 /// Get the current value for <sfile> in allocated memory.
-/// @param which  ESTACK_SFILE for <sfile> and ESTACK_STACK for <stack>.
+/// @param which  ESTACK_SFILE for <sfile>, ESTACK_STACK for <stack> or
+///               ESTACK_SCRIPT for <script>.
 char *estack_sfile(estack_arg_T which)
 {
   estack_T *entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
@@ -111,6 +112,27 @@ char *estack_sfile(estack_arg_T which)
     return xstrdup(entry->es_name);
   }
 
+  // If evaluated in a function return the path of the script where the
+  // function is defined, at script level the current script path is returned
+  // instead.
+  if (which == ESTACK_SCRIPT) {
+    if (entry->es_type == ETYPE_UFUNC) {
+      sctx_T *def_ctx = &entry->es_info.ufunc->uf_script_ctx;
+      if (def_ctx->sc_sid > 0) {
+        return xstrdup((char *)(SCRIPT_ITEM(def_ctx->sc_sid).sn_name));
+      }
+    } else if (exestack.ga_len > 0) {
+      // Walk the stack backwards, starting from the current frame.
+      for (int idx = exestack.ga_len - 1; idx; idx--) {
+        entry = ((estack_T *)exestack.ga_data) + idx;
+        if (entry->es_type == ETYPE_SCRIPT) {
+          return xstrdup(entry->es_name);
+        }
+      }
+    }
+    return NULL;
+  }
+
   // Give information about each stack entry up to the root.
   // For a function we compose the call stack, as it was done in the past:
   //   "function One[123]..Two[456]..Three"
diff --git a/src/nvim/runtime.h b/src/nvim/runtime.h
index a255c6c096..03c426c79b 100644
--- a/src/nvim/runtime.h
+++ b/src/nvim/runtime.h
@@ -47,6 +47,7 @@ typedef enum {
   ESTACK_NONE,
   ESTACK_SFILE,
   ESTACK_STACK,
+  ESTACK_SCRIPT,
 } estack_arg_T;
 
 typedef struct scriptitem_S {
diff --git a/src/nvim/testdir/test_expand.vim b/src/nvim/testdir/test_expand.vim
index ce414e4b11..4b9140ef50 100644
--- a/src/nvim/testdir/test_expand.vim
+++ b/src/nvim/testdir/test_expand.vim
@@ -147,4 +147,54 @@ func Test_expandcmd_shell_nonomatch()
   call assert_equal('$*', expandcmd('$*'))
 endfunc
 
+func Test_expand_script_source()
+  let lines0 =<< trim [SCRIPT]
+    let g:script_level[0] = expand('<script>:t')
+    so Xscript1
+    func F0()
+      let g:func_level[0] = expand('<script>:t')
+    endfunc
+  [SCRIPT]
+
+  let lines1 =<< trim [SCRIPT]
+    let g:script_level[1] = expand('<script>:t')
+    so Xscript2
+    func F1()
+      let g:func_level[1] = expand('<script>:t')
+    endfunc
+  [SCRIPT]
+
+  let lines2 =<< trim [SCRIPT]
+    let g:script_level[2] = expand('<script>:t')
+    func F2()
+      let g:func_level[2] = expand('<script>:t')
+    endfunc
+  [SCRIPT]
+
+  call writefile(lines0, 'Xscript0')
+  call writefile(lines1, 'Xscript1')
+  call writefile(lines2, 'Xscript2')
+
+  " Check the expansion of <script> at script and function level.
+  let g:script_level = ['', '', '']
+  let g:func_level = ['', '', '']
+
+  so Xscript0
+  call F0()
+  call F1()
+  call F2()
+
+  call assert_equal(['Xscript0', 'Xscript1', 'Xscript2'], g:script_level)
+  call assert_equal(['Xscript0', 'Xscript1', 'Xscript2'], g:func_level)
+
+  unlet g:script_level g:func_level
+  delfunc F0
+  delfunc F1
+  delfunc F2
+
+  call delete('Xscript0')
+  call delete('Xscript1')
+  call delete('Xscript2')
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
-- 
cgit 


From a9e6cf0e64ede3fc26226fed3a5f94a7f5020918 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 23 Aug 2022 12:11:05 +0800
Subject: vim-patch:8.2.4740: when expand() fails there is no error message

Problem:    When expand() fails there is no error message.
Solution:   When 'verbose' is set give an error message.
https://github.com/vim/vim/commit/575445200bd35283191ecd7a0d596b37c5b477a4
---
 src/nvim/eval/funcs.c            | 12 +++++++++---
 src/nvim/testdir/test_expand.vim | 12 ++++++++++--
 2 files changed, 19 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index 181b17f747..6ff05b13e8 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -1958,7 +1958,6 @@ static void f_exists(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 /// "expand()" function
 static void f_expand(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {
-  char *errormsg;
   int options = WILD_SILENT|WILD_USE_NL|WILD_LIST_NOTFOUND;
   bool error = false;
 #ifdef BACKSLASH_IN_FILENAME
@@ -1978,10 +1977,17 @@ static void f_expand(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 
   const char *s = tv_get_string(&argvars[0]);
   if (*s == '%' || *s == '#' || *s == '<') {
-    emsg_off++;
+    if (p_verbose == 0) {
+      emsg_off++;
+    }
     size_t len;
+    char *errormsg = NULL;
     char_u *result = eval_vars((char_u *)s, (char_u *)s, &len, NULL, &errormsg, NULL);
-    emsg_off--;
+    if (p_verbose == 0) {
+      emsg_off--;
+    } else if (errormsg != NULL) {
+      emsg(errormsg);
+    }
     if (rettv->v_type == VAR_LIST) {
       tv_list_alloc_ret(rettv, (result != NULL));
       if (result != NULL) {
diff --git a/src/nvim/testdir/test_expand.vim b/src/nvim/testdir/test_expand.vim
index 4b9140ef50..6579e09d5e 100644
--- a/src/nvim/testdir/test_expand.vim
+++ b/src/nvim/testdir/test_expand.vim
@@ -116,13 +116,21 @@ func Test_source_sfile()
     :call assert_equal('edit <cword>', expandcmd("edit <cword>"))
     :call assert_equal('edit <cexpr>', expandcmd("edit <cexpr>"))
     :call assert_fails('autocmd User MyCmd echo "<sfile>"', 'E498:')
+    :
+    :call assert_equal('', expand('<script>'))
+    :verbose echo expand('<script>')
+    :call add(v:errors, v:errmsg)
+    :verbose echo expand('<sfile>')
+    :call add(v:errors, v:errmsg)
     :call writefile(v:errors, 'Xresult')
     :qall!
-
   [SCRIPT]
   call writefile(lines, 'Xscript')
   if RunVim([], [], '--clean -s Xscript')
-    call assert_equal([], readfile('Xresult'))
+    call assert_equal([
+          \ 'E1274: No script file name to substitute for "<script>"',
+          \ 'E498: no :source file name to substitute for "<sfile>"'],
+          \ readfile('Xresult'))
   endif
   call delete('Xscript')
   call delete('Xresult')
-- 
cgit 


From 7afc17dec17bcc40c646b796f05d373e46916dd7 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 23 Aug 2022 13:03:00 +0800
Subject: vim-patch:8.2.4741: startup test fails

Problem:    Startup test fails.
Solution:   Avoid an error for verbose expansion.  Fix that the "0verbose"
            command modifier doesn't work.
https://github.com/vim/vim/commit/60895f3e36def9beb7d5463e792e5154ad9a7a0a

Most code changes has already been ported.
---
 src/nvim/ex_docmd.c             | 25 +++++++++++++------------
 src/nvim/testdir/test_excmd.vim |  8 +++++---
 2 files changed, 18 insertions(+), 15 deletions(-)

(limited to 'src')

diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index ac2a65844f..7ed28e823e 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -6617,18 +6617,19 @@ ssize_t find_cmdline_var(const char_u *src, size_t *usedlen)
 
 /// Evaluate cmdline variables.
 ///
-/// change '%'       to curbuf->b_ffname
-///        '#'       to curwin->w_alt_fnum
-///        '<cword>' to word under the cursor
-///        '<cWORD>' to WORD under the cursor
-///        '<cexpr>' to C-expression under the cursor
-///        '<cfile>' to path name under the cursor
-///        '<sfile>' to sourced file name
-///        '<stack>' to call stack
-///        '<slnum>' to sourced file line number
-///        '<afile>' to file name for autocommand
-///        '<abuf>'  to buffer number for autocommand
-///        '<amatch>' to matching name for autocommand
+/// change "%"       to curbuf->b_ffname
+///        "#"       to curwin->w_alt_fnum
+///        "<cword>" to word under the cursor
+///        "<cWORD>" to WORD under the cursor
+///        "<cexpr>" to C-expression under the cursor
+///        "<cfile>" to path name under the cursor
+///        "<sfile>" to sourced file name
+///        "<stack>" to call stack
+///        "<script>" to current script name
+///        "<slnum>" to sourced file line number
+///        "<afile>" to file name for autocommand
+///        "<abuf>"  to buffer number for autocommand
+///        "<amatch>" to matching name for autocommand
 ///
 /// When an error is detected, "errormsg" is set to a non-NULL pointer (may be
 /// "" for error without a message) and NULL is returned.
diff --git a/src/nvim/testdir/test_excmd.vim b/src/nvim/testdir/test_excmd.vim
index dac7a6989d..9a9e5c546b 100644
--- a/src/nvim/testdir/test_excmd.vim
+++ b/src/nvim/testdir/test_excmd.vim
@@ -568,10 +568,12 @@ endfunc
 
 " Test for the :verbose command
 func Test_verbose_cmd()
-  call assert_equal(['  verbose=1'], split(execute('verbose set vbs'), "\n"))
+  set verbose=3
+  call assert_match('  verbose=1\n\s*Last set from ', execute('verbose set vbs'), "\n")
   call assert_equal(['  verbose=0'], split(execute('0verbose set vbs'), "\n"))
-  let l = execute("4verbose set verbose | set verbose")
-  call assert_equal(['  verbose=4', '  verbose=0'], split(l, "\n"))
+  set verbose=0
+  call assert_match('  verbose=4\n\s*Last set from .*\n  verbose=0',
+        \ execute("4verbose set verbose | set verbose"))
 endfunc
 
 " Test for the :delete command and the related abbreviated commands
-- 
cgit 


From d0b9fe2d5a95def67acc83f713b932f3f12dea08 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 23 Aug 2022 12:20:37 +0800
Subject: vim-patch:8.2.4749: <script> is not expanded in autocmd context

Problem:    <script> is not expanded in autocmd context.
Solution:   Add the context to the pattern struct. (closes vim/vim#10144)
            Rename AutoPatCmd to AutoPatCmd_T.
https://github.com/vim/vim/commit/eca7c60d68e63001dbe3c8e5d240b0895e607fc3

Omit AutoPatCmd -> AutoPatCmd_T rename as it is inconsistent.
Use `.sn_name` instead of `->sn_name` as v8.2.0154 hasn't been ported.
Omit acp_script_stx(), use member directly.
---
 src/nvim/autocmd.c               | 37 ++++++++++++++++++++++---------------
 src/nvim/autocmd.h               |  3 ++-
 src/nvim/runtime.c               | 37 +++++++++++++++++++++++--------------
 src/nvim/testdir/test_expand.vim | 27 ++++++++++++++++++---------
 4 files changed, 65 insertions(+), 39 deletions(-)

(limited to 'src')

diff --git a/src/nvim/autocmd.c b/src/nvim/autocmd.c
index 579c6c029f..c20db2910c 100644
--- a/src/nvim/autocmd.c
+++ b/src/nvim/autocmd.c
@@ -1811,16 +1811,15 @@ bool apply_autocmds_group(event_T event, char *fname, char *fname_io, bool force
   char *tail = path_tail(fname);
 
   // Find first autocommand that matches
-  AutoPatCmd patcmd;
-  patcmd.curpat = first_autopat[(int)event];
-  patcmd.nextcmd = NULL;
-  patcmd.group = group;
-  patcmd.fname = fname;
-  patcmd.sfname = sfname;
-  patcmd.tail = tail;
-  patcmd.event = event;
-  patcmd.arg_bufnr = autocmd_bufnr;
-  patcmd.next = NULL;
+  AutoPatCmd patcmd = {
+    .curpat = first_autopat[(int)event],
+    .group = group,
+    .fname = fname,
+    .sfname = sfname,
+    .tail = tail,
+    .event = event,
+    .arg_bufnr = autocmd_bufnr,
+  };
   auto_next_pat(&patcmd, false);
 
   // found one, start executing the autocommands
@@ -1984,9 +1983,12 @@ void auto_next_pat(AutoPatCmd *apc, int stop_at_last)
   AutoPat *ap;
   AutoCmd *cp;
   char *s;
-  char **const sourcing_namep = &SOURCING_NAME;
 
-  XFREE_CLEAR(*sourcing_namep);
+  estack_T *const entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
+
+  // Clear the exestack entry for this ETYPE_AUCMD entry.
+  XFREE_CLEAR(entry->es_name);
+  entry->es_info.aucmd = NULL;
 
   for (ap = apc->curpat; ap != NULL && !got_int; ap = ap->next) {
     apc->curpat = NULL;
@@ -2011,14 +2013,18 @@ void auto_next_pat(AutoPatCmd *apc, int stop_at_last)
         const size_t sourcing_name_len
           = (STRLEN(s) + strlen(name) + (size_t)ap->patlen + 1);
 
-        *sourcing_namep = xmalloc(sourcing_name_len);
-        snprintf(*sourcing_namep, sourcing_name_len, s, name, ap->pat);
+        char *const namep = xmalloc(sourcing_name_len);
+        snprintf(namep, sourcing_name_len, s, name, ap->pat);
         if (p_verbose >= 8) {
           verbose_enter();
-          smsg(_("Executing %s"), *sourcing_namep);
+          smsg(_("Executing %s"), namep);
           verbose_leave();
         }
 
+        // Update the exestack entry for this autocmd.
+        entry->es_name = namep;
+        entry->es_info.aucmd = apc;
+
         apc->curpat = ap;
         apc->nextcmd = ap->cmds;
         // mark last command
@@ -2150,6 +2156,7 @@ char *getnextac(int c, void *cookie, int indent, bool do_concat)
   // lua code, so that it works properly
   autocmd_nested = ac->nested;
   current_sctx = ac->script_ctx;
+  acp->script_ctx = current_sctx;
 
   if (ac->exec.type == CALLABLE_CB) {
     if (call_autocmd_callback(ac, acp)) {
diff --git a/src/nvim/autocmd.h b/src/nvim/autocmd.h
index d559d8c3d2..75a8a7aaa1 100644
--- a/src/nvim/autocmd.h
+++ b/src/nvim/autocmd.h
@@ -29,7 +29,7 @@ struct AutoCmd_S {
   bool nested;                          // If autocommands nest here
   bool last;                            // last command in list
   int64_t id;                           // ID used for uniquely tracking an autocmd.
-  sctx_T script_ctx;                    // script context where defined
+  sctx_T script_ctx;                    // script context where it is defined
   char *desc;                           // Description for the autocmd.
   AutoCmd *next;                        // Next AutoCmd in list
 };
@@ -59,6 +59,7 @@ struct AutoPatCmd_S {
   char *sfname;             // sfname to match with
   char *tail;               // tail of fname
   event_T event;            // current event
+  sctx_T script_ctx;        // script context where it is defined
   int arg_bufnr;            // initially equal to <abuf>, set to zero when buf is deleted
   Object *data;             // arbitrary data
   AutoPatCmd *next;         // chain of active apc-s for auto-invalidation
diff --git a/src/nvim/runtime.c b/src/nvim/runtime.c
index 412b78728e..038aad12a4 100644
--- a/src/nvim/runtime.c
+++ b/src/nvim/runtime.c
@@ -104,7 +104,7 @@ void estack_pop(void)
 ///               ESTACK_SCRIPT for <script>.
 char *estack_sfile(estack_arg_T which)
 {
-  estack_T *entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
+  const estack_T *entry = ((estack_T *)exestack.ga_data) + exestack.ga_len - 1;
   if (which == ESTACK_SFILE && entry->es_type != ETYPE_UFUNC) {
     if (entry->es_name == NULL) {
       return NULL;
@@ -112,22 +112,31 @@ char *estack_sfile(estack_arg_T which)
     return xstrdup(entry->es_name);
   }
 
-  // If evaluated in a function return the path of the script where the
-  // function is defined, at script level the current script path is returned
+  // If evaluated in a function or autocommand, return the path of the script
+  // where it is defined, at script level the current script path is returned
   // instead.
   if (which == ESTACK_SCRIPT) {
-    if (entry->es_type == ETYPE_UFUNC) {
-      sctx_T *def_ctx = &entry->es_info.ufunc->uf_script_ctx;
-      if (def_ctx->sc_sid > 0) {
-        return xstrdup((char *)(SCRIPT_ITEM(def_ctx->sc_sid).sn_name));
-      }
-    } else if (exestack.ga_len > 0) {
-      // Walk the stack backwards, starting from the current frame.
-      for (int idx = exestack.ga_len - 1; idx; idx--) {
-        entry = ((estack_T *)exestack.ga_data) + idx;
-        if (entry->es_type == ETYPE_SCRIPT) {
-          return xstrdup(entry->es_name);
+    assert(entry == ((estack_T *)exestack.ga_data) + exestack.ga_len - 1);
+    // Walk the stack backwards, starting from the current frame.
+    for (int idx = exestack.ga_len - 1; idx >= 0; idx--, entry--) {
+      if (entry->es_type == ETYPE_UFUNC) {
+        const sctx_T *const def_ctx = &entry->es_info.ufunc->uf_script_ctx;
+
+        if (def_ctx->sc_sid > 0) {
+          return xstrdup((char *)(SCRIPT_ITEM(def_ctx->sc_sid).sn_name));
+        } else {
+          return NULL;
+        }
+      } else if (entry->es_type == ETYPE_AUCMD) {
+        const sctx_T *const def_ctx = &entry->es_info.aucmd->script_ctx;
+
+        if (def_ctx->sc_sid > 0) {
+          return xstrdup((char *)(SCRIPT_ITEM(def_ctx->sc_sid).sn_name));
+        } else {
+          return NULL;
         }
+      } else if (entry->es_type == ETYPE_SCRIPT) {
+        return xstrdup(entry->es_name);
       }
     }
     return NULL;
diff --git a/src/nvim/testdir/test_expand.vim b/src/nvim/testdir/test_expand.vim
index 6579e09d5e..aa131a49ff 100644
--- a/src/nvim/testdir/test_expand.vim
+++ b/src/nvim/testdir/test_expand.vim
@@ -157,43 +157,52 @@ endfunc
 
 func Test_expand_script_source()
   let lines0 =<< trim [SCRIPT]
-    let g:script_level[0] = expand('<script>:t')
+    call extend(g:script_level, [expand('<script>:t')])
     so Xscript1
     func F0()
-      let g:func_level[0] = expand('<script>:t')
+      call extend(g:func_level, [expand('<script>:t')])
     endfunc
+
+    au User * call extend(g:au_level, [expand('<script>:t')])
   [SCRIPT]
 
   let lines1 =<< trim [SCRIPT]
-    let g:script_level[1] = expand('<script>:t')
+    call extend(g:script_level, [expand('<script>:t')])
     so Xscript2
     func F1()
-      let g:func_level[1] = expand('<script>:t')
+      call extend(g:func_level, [expand('<script>:t')])
     endfunc
+
+    au User * call extend(g:au_level, [expand('<script>:t')])
   [SCRIPT]
 
   let lines2 =<< trim [SCRIPT]
-    let g:script_level[2] = expand('<script>:t')
+    call extend(g:script_level, [expand('<script>:t')])
     func F2()
-      let g:func_level[2] = expand('<script>:t')
+      call extend(g:func_level, [expand('<script>:t')])
     endfunc
+
+    au User * call extend(g:au_level, [expand('<script>:t')])
   [SCRIPT]
 
   call writefile(lines0, 'Xscript0')
   call writefile(lines1, 'Xscript1')
   call writefile(lines2, 'Xscript2')
 
-  " Check the expansion of <script> at script and function level.
-  let g:script_level = ['', '', '']
-  let g:func_level = ['', '', '']
+  " Check the expansion of <script> at different levels.
+  let g:script_level = []
+  let g:func_level = []
+  let g:au_level = []
 
   so Xscript0
   call F0()
   call F1()
   call F2()
+  doautocmd User
 
   call assert_equal(['Xscript0', 'Xscript1', 'Xscript2'], g:script_level)
   call assert_equal(['Xscript0', 'Xscript1', 'Xscript2'], g:func_level)
+  call assert_equal(['Xscript2', 'Xscript1', 'Xscript0'], g:au_level)
 
   unlet g:script_level g:func_level
   delfunc F0
-- 
cgit 


From f1b8683b8c2f4a48d501c9dedef664f17761b8ac Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 23 Aug 2022 13:24:40 +0800
Subject: vim-patch:8.2.4841: empty string considered an error for expand()

Problem:    Empty string considered an error for expand() when 'verbose' is
            set. (Christian Brabandt)
Solution:   Do not give an error for an empty result. (closes vim/vim#10307)
https://github.com/vim/vim/commit/a96edb736d4274fc4aea460800780e06e1510812
---
 src/nvim/eval/funcs.c                 |  2 +-
 src/nvim/ex_docmd.c                   | 22 ++++++++++++----------
 src/nvim/path.c                       |  3 ++-
 src/nvim/testdir/test_expand_func.vim |  6 +++++-
 4 files changed, 20 insertions(+), 13 deletions(-)

(limited to 'src')

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index 6ff05b13e8..8d5b8c850c 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -1982,7 +1982,7 @@ static void f_expand(typval_T *argvars, typval_T *rettv, FunPtr fptr)
     }
     size_t len;
     char *errormsg = NULL;
-    char_u *result = eval_vars((char_u *)s, (char_u *)s, &len, NULL, &errormsg, NULL);
+    char_u *result = eval_vars((char_u *)s, (char_u *)s, &len, NULL, &errormsg, NULL, false);
     if (p_verbose == 0) {
       emsg_off--;
     } else if (errormsg != NULL) {
diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 7ed28e823e..f9055a0e8b 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -3705,7 +3705,7 @@ int expand_filename(exarg_T *eap, char **cmdlinep, char **errormsgp)
     size_t srclen;
     int escaped;
     char *repl = (char *)eval_vars((char_u *)p, (char_u *)eap->arg, &srclen, &(eap->do_ecmd_lnum),
-                                   errormsgp, &escaped);
+                                   errormsgp, &escaped, true);
     if (*errormsgp != NULL) {           // error detected
       return FAIL;
     }
@@ -6634,18 +6634,19 @@ ssize_t find_cmdline_var(const char_u *src, size_t *usedlen)
 /// When an error is detected, "errormsg" is set to a non-NULL pointer (may be
 /// "" for error without a message) and NULL is returned.
 ///
-/// @param src       pointer into commandline
-/// @param srcstart  beginning of valid memory for src
-/// @param usedlen   characters after src that are used
-/// @param lnump     line number for :e command, or NULL
-/// @param errormsg  pointer to error message
-/// @param escaped   return value has escaped white space (can be NULL)
+/// @param src             pointer into commandline
+/// @param srcstart        beginning of valid memory for src
+/// @param usedlen         characters after src that are used
+/// @param lnump           line number for :e command, or NULL
+/// @param errormsg        pointer to error message
+/// @param escaped         return value has escaped white space (can be NULL)
+/// @param empty_is_error  empty result is considered an error
 ///
 /// @return          an allocated string if a valid match was found.
 ///                  Returns NULL if no match was found.  "usedlen" then still contains the
 ///                  number of characters to skip.
 char_u *eval_vars(char_u *src, char_u *srcstart, size_t *usedlen, linenr_T *lnump, char **errormsg,
-                  int *escaped)
+                  int *escaped, bool empty_is_error)
 {
   char *result;
   char *resultbuf = NULL;
@@ -6890,7 +6891,7 @@ char_u *eval_vars(char_u *src, char_u *srcstart, size_t *usedlen, linenr_T *lnum
     }
   }
 
-  if (resultlen == 0 || valid != VALID_HEAD + VALID_PATH) {
+  if (empty_is_error && (resultlen == 0 || valid != VALID_HEAD + VALID_PATH)) {
     if (valid != VALID_HEAD + VALID_PATH) {
       // xgettext:no-c-format
       *errormsg = _("E499: Empty file name for '%' or '#', only works with \":p:h\"");
@@ -6919,7 +6920,8 @@ char *expand_sfile(char *arg)
       // replace "<sfile>" with the sourced file name, and do ":" stuff
       size_t srclen;
       char *errormsg;
-      char *repl = (char *)eval_vars((char_u *)p, (char_u *)result, &srclen, NULL, &errormsg, NULL);
+      char *repl = (char *)eval_vars((char_u *)p, (char_u *)result, &srclen, NULL, &errormsg, NULL,
+                                     true);
       if (errormsg != NULL) {
         if (*errormsg) {
           emsg(errormsg);
diff --git a/src/nvim/path.c b/src/nvim/path.c
index 1500254de5..d50ef87b62 100644
--- a/src/nvim/path.c
+++ b/src/nvim/path.c
@@ -2135,7 +2135,8 @@ int expand_wildcards_eval(char_u **pat, int *num_file, char ***file, int flags)
 
   if (*exp_pat == '%' || *exp_pat == '#' || *exp_pat == '<') {
     emsg_off++;
-    eval_pat = eval_vars((char_u *)exp_pat, (char_u *)exp_pat, &usedlen, NULL, &ignored_msg, NULL);
+    eval_pat = eval_vars((char_u *)exp_pat, (char_u *)exp_pat, &usedlen, NULL, &ignored_msg, NULL,
+                         true);
     emsg_off--;
     if (eval_pat != NULL) {
       exp_pat = (char *)concat_str(eval_pat, (char_u *)exp_pat + usedlen);
diff --git a/src/nvim/testdir/test_expand_func.vim b/src/nvim/testdir/test_expand_func.vim
index df01d84f19..dfe4ce105c 100644
--- a/src/nvim/testdir/test_expand_func.vim
+++ b/src/nvim/testdir/test_expand_func.vim
@@ -107,10 +107,14 @@ endfunc
 
 func Test_expand()
   new
-  call assert_equal("",  expand('%:S'))
+  call assert_equal("''", expand('%:S'))
   call assert_equal('3', '<slnum>'->expand())
   call assert_equal(['4'], expand('<slnum>', v:false, v:true))
   " Don't add any line above this, otherwise <slnum> will change.
+  call assert_equal("", expand('%'))
+  set verbose=1
+  call assert_equal("", expand('%'))
+  set verbose=0
   quit
 endfunc
 
-- 
cgit 


From d459b6687704b7d1f230d0b14c0d59f87cf5f67d Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 23 Aug 2022 13:31:07 +0800
Subject: vim-patch:8.2.4842: expand("%:p") is not empty when there is no
 buffer name

Problem:    expand("%:p") is not empty when there is no buffer name.
Solution:   When ignoring errors still return NULL. (closes vim/vim#10311)
https://github.com/vim/vim/commit/211a5bb2353c66684f38527184a258921f95c9d9
---
 src/nvim/ex_docmd.c                   | 14 ++++++++------
 src/nvim/testdir/test_expand_func.vim |  3 ++-
 2 files changed, 10 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index f9055a0e8b..e8860ff0d4 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -6891,12 +6891,14 @@ char_u *eval_vars(char_u *src, char_u *srcstart, size_t *usedlen, linenr_T *lnum
     }
   }
 
-  if (empty_is_error && (resultlen == 0 || valid != VALID_HEAD + VALID_PATH)) {
-    if (valid != VALID_HEAD + VALID_PATH) {
-      // xgettext:no-c-format
-      *errormsg = _("E499: Empty file name for '%' or '#', only works with \":p:h\"");
-    } else {
-      *errormsg = _("E500: Evaluates to an empty string");
+  if (resultlen == 0 || valid != VALID_HEAD + VALID_PATH) {
+    if (empty_is_error) {
+      if (valid != VALID_HEAD + VALID_PATH) {
+        // xgettext:no-c-format
+        *errormsg = _("E499: Empty file name for '%' or '#', only works with \":p:h\"");
+      } else {
+        *errormsg = _("E500: Evaluates to an empty string");
+      }
     }
     result = NULL;
   } else {
diff --git a/src/nvim/testdir/test_expand_func.vim b/src/nvim/testdir/test_expand_func.vim
index dfe4ce105c..80bfdb8553 100644
--- a/src/nvim/testdir/test_expand_func.vim
+++ b/src/nvim/testdir/test_expand_func.vim
@@ -107,7 +107,7 @@ endfunc
 
 func Test_expand()
   new
-  call assert_equal("''", expand('%:S'))
+  call assert_equal("", expand('%:S'))
   call assert_equal('3', '<slnum>'->expand())
   call assert_equal(['4'], expand('<slnum>', v:false, v:true))
   " Don't add any line above this, otherwise <slnum> will change.
@@ -115,6 +115,7 @@ func Test_expand()
   set verbose=1
   call assert_equal("", expand('%'))
   set verbose=0
+  call assert_equal("", expand('%:p'))
   quit
 endfunc
 
-- 
cgit