# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1639591202 -3600
# Node ID 5ea6db641b5ecba6e31eadb0fb54ef05cb0ce67a
# Parent  dfbdd4ea6937f30cee802f72977351ee3f29445d
patch 8.2.3817: Vim9: Not using NL as command end does not work for :autocmd

Commit: https://github.com/vim/vim/commit/f87dac04c351583241ea1c4ec4228516431e6f22
Author: Bram Moolenaar <Bram@vim.org>
Date:   Wed Dec 15 17:53:40 2021 +0000

    patch 8.2.3817: Vim9: Not using NL as command end does not work for :autocmd

    Problem:    Vim9: Not using NL as command end does not work for :autocmd.
    Solution:   Only ignore NL for commands with an expression argument.

diff --git a/src/ex_cmds.h b/src/ex_cmds.h
--- a/src/ex_cmds.h
+++ b/src/ex_cmds.h
@@ -57,6 +57,7 @@
 				// buffer when curbuf_lock is set
 #define EX_NONWHITE_OK 0x2000000  // command can be followed by non-white
 #define EX_KEEPSCRIPT  0x4000000  // keep sctx of where command was invoked
+#define EX_EXPR_ARG    0x8000000  // argument is an expression
 
 #define EX_FILES (EX_XFILE | EX_EXTRA)	// multiple extra files allowed
 #define EX_FILE1 (EX_FILES | EX_NOSPC)	// 1 file, defaults to current file
@@ -265,7 +266,7 @@ EXCMD(CMD_caddbuffer,	"caddbuffer",	ex_c
 	EX_RANGE|EX_WORD1|EX_TRLBAR,
 	ADDR_OTHER),
 EXCMD(CMD_caddexpr,	"caddexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG,
 	ADDR_NONE),
 EXCMD(CMD_caddfile,	"caddfile",	ex_cfile,
 	EX_TRLBAR|EX_FILE1,
@@ -274,7 +275,7 @@ EXCMD(CMD_cafter,	"cafter",	ex_cbelow,
 	EX_RANGE|EX_COUNT|EX_TRLBAR,
 	ADDR_UNSIGNED),
 EXCMD(CMD_call,		"call",		ex_call,
-	EX_RANGE|EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_RANGE|EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_LINES),
 EXCMD(CMD_catch,	"catch",	ex_catch,
 	EX_EXTRA|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
@@ -307,7 +308,7 @@ EXCMD(CMD_center,	"center",	ex_align,
 	EX_TRLBAR|EX_RANGE|EX_WHOLEFOLD|EX_EXTRA|EX_CMDWIN|EX_LOCK_OK|EX_MODIFY,
 	ADDR_LINES),
 EXCMD(CMD_cexpr,	"cexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_BANG,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG|EX_BANG,
 	ADDR_NONE),
 EXCMD(CMD_cfile,	"cfile",	ex_cfile,
 	EX_TRLBAR|EX_FILE1|EX_BANG,
@@ -325,7 +326,7 @@ EXCMD(CMD_cgetbuffer,	"cgetbuffer",	ex_c
 	EX_RANGE|EX_WORD1|EX_TRLBAR,
 	ADDR_OTHER),
 EXCMD(CMD_cgetexpr,	"cgetexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG,
 	ADDR_NONE),
 EXCMD(CMD_chdir,	"chdir",	ex_cd,
 	EX_BANG|EX_FILE1|EX_TRLBAR|EX_CMDWIN|EX_LOCK_OK,
@@ -409,7 +410,7 @@ EXCMD(CMD_confirm,	"confirm",	ex_wrongmo
 	EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_const,	"const",	ex_let,
-	EX_EXTRA|EX_BANG|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_BANG|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_copen,	"copen",	ex_copen,
 	EX_RANGE|EX_COUNT|EX_TRLBAR,
@@ -526,28 +527,28 @@ EXCMD(CMD_earlier,	"earlier",	ex_later,
 	EX_TRLBAR|EX_EXTRA|EX_NOSPC|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echo,		"echo",		ex_echo,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echoerr,	"echoerr",	ex_execute,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echohl,	"echohl",	ex_echohl,
 	EX_EXTRA|EX_TRLBAR|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echomsg,	"echomsg",	ex_execute,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echoconsole,	"echoconsole",	ex_execute,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_echon,	"echon",	ex_echo,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_else,		"else",		ex_else,
 	EX_TRLBAR|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_elseif,	"elseif",	ex_else,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_emenu,	"emenu",	ex_emenu,
 	EX_NEEDARG|EX_EXTRA|EX_TRLBAR|EX_NOTRLCOM|EX_RANGE|EX_CMDWIN|EX_LOCK_OK,
@@ -586,19 +587,19 @@ EXCMD(CMD_enum,		"enum",		ex_ni,
 	EX_EXTRA|EX_TRLBAR|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_eval,		"eval",		ex_eval,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_ex,		"ex",		ex_edit,
 	EX_BANG|EX_FILE1|EX_CMDARG|EX_ARGOPT|EX_TRLBAR,
 	ADDR_NONE),
 EXCMD(CMD_execute,	"execute",	ex_execute,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_exit,		"exit",		ex_exit,
 	EX_RANGE|EX_WHOLEFOLD|EX_BANG|EX_FILE1|EX_ARGOPT|EX_DFLALL|EX_TRLBAR|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_LINES),
 EXCMD(CMD_export,	"export",	ex_export,
-	EX_EXTRA|EX_NOTRLCOM|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_exusage,	"exusage",	ex_exusage,
 	EX_TRLBAR,
@@ -649,7 +650,7 @@ EXCMD(CMD_foldopen,	"foldopen",	ex_foldo
 	EX_RANGE|EX_BANG|EX_WHOLEFOLD|EX_TRLBAR|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_LINES),
 EXCMD(CMD_for,		"for",		ex_while,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_function,	"function",	ex_function,
 	EX_EXTRA|EX_BANG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
@@ -709,7 +710,7 @@ EXCMD(CMD_iabclear,	"iabclear",	ex_abcle
 	EX_EXTRA|EX_TRLBAR|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_if,		"if",		ex_if,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_ijump,	"ijump",	ex_findpat,
 	EX_BANG|EX_RANGE|EX_DFLALL|EX_WHOLEFOLD|EX_EXTRA,
@@ -799,7 +800,7 @@ EXCMD(CMD_language,	"language",	ex_langu
 	EX_EXTRA|EX_TRLBAR|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_laddexpr,	"laddexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG,
 	ADDR_NONE),
 EXCMD(CMD_laddbuffer,	"laddbuffer",	ex_cbuffer,
 	EX_RANGE|EX_WORD1|EX_TRLBAR,
@@ -847,10 +848,10 @@ EXCMD(CMD_leftabove,	"leftabove",	ex_wro
 	EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM,
 	ADDR_NONE),
 EXCMD(CMD_let,		"let",		ex_let,
-	EX_EXTRA|EX_NOTRLCOM|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
+	EX_EXTRA|EX_NOTRLCOM|EX_EXPR_ARG|EX_SBOXOK|EX_CMDWIN|EX_LOCK_OK,
 	ADDR_NONE),
 EXCMD(CMD_lexpr,	"lexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_BANG,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG|EX_BANG,
 	ADDR_NONE),
 EXCMD(CMD_legacy,	"legacy",	ex_wrongmodifier,
 	EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM|EX_CMDWIN|EX_LOCK_OK,
@@ -871,7 +872,7 @@ EXCMD(CMD_lgetbuffer,	"lgetbuffer",	ex_c
 	EX_RANGE|EX_WORD1|EX_TRLBAR,
 	ADDR_OTHER),
 EXCMD(CMD_lgetexpr,	"lgetexpr",	ex_cexpr,
-	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM,
+	EX_NEEDARG|EX_WORD1|EX_NOTRLCOM|EX_EXPR_ARG,
 	ADDR_NONE),
 EXCMD(CMD_lgrep,	"lgrep",	ex_make,
 	EX_RANGE|EX_BANG|EX_NEEDARG|EX_EXTRA|EX_NOTRLCOM|EX_TRLBAR|EX_XFILE,
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2305,7 +2305,7 @@ do_one_cmd(
 	    // versions.
 	    if (*p == '\\' && p[1] == '\n')
 		STRMOVE(p, p + 1);
-	    else if (*p == '\n' && (ea.argt & EX_TRLBAR))
+	    else if (*p == '\n' && !(ea.argt & EX_EXPR_ARG))
 	    {
 		ea.nextcmd = p + 1;
 		*p = NUL;
diff --git a/src/testdir/test_usercommands.vim b/src/testdir/test_usercommands.vim
--- a/src/testdir/test_usercommands.vim
+++ b/src/testdir/test_usercommands.vim
@@ -648,12 +648,23 @@ func Test_usercmd_with_block()
   call CheckScriptFailure(lines, 'E1026:')
 
   let lines =<< trim END
-      command BarCommand {
+      command HelloThere {
          echo 'hello' | echo 'there'
         }
-      BarCommand
+      HelloThere
   END
-  call CheckScriptFailure(lines, 'E1231:')
+  call CheckScriptSuccess(lines)
+  delcommand HelloThere
+
+  let lines =<< trim END
+      command BadCommand {
+         echo  {
+         'key': 'value',
+          }
+          }
+      BadCommand
+  END
+  call CheckScriptFailure(lines, 'E1128:')
 endfunc
 
 func Test_delcommand_buffer()
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3817,
+/**/
     3816,
 /**/
     3815,