patch 8.2.1175: Vim9: cannot split a line before ".member"v8.2.1175

Problem:    Vim9: Cannot split a line before ".member".
Solution:   Check for ".member" after line break.

3 files changed, 32 insertions, 4 deletions

diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 83b7692090..1f4bde9123 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1016,7 +1016,8 @@ def Test_expr7_list()
   call CheckDefFailure(["let x = g:list_mixed[xxx]"], 'E1001:')
   call CheckDefFailure(["let x = [1,2,3]"], 'E1069:')
   call CheckDefExecFailure(["let x = g:list_mixed['xx']"], 'E39:')
-  call CheckDefFailure(["let x = g:list_mixed[0"], 'E111:')
+  call CheckDefFailure(["let x = g:list_mixed["], 'E1097:')
+  call CheckDefFailure(["let x = g:list_mixed[0"], 'E1097:')
   call CheckDefExecFailure(["let x = g:list_empty[3]"], 'E684:')
 enddef
 
@@ -1135,6 +1136,11 @@ def Test_expr_member()
   assert_equal(1, g:dict_one.one)
   let d: dict<number> = g:dict_one
   assert_equal(1, d['one'])
+  assert_equal(1, d[
+		  'one'
+		  ])
+  assert_equal(1, d
+  	.one)
 
   # getting the one member should clear the dict after getting the item
   assert_equal('one', #{one: 'one'}.one)
diff --git a/src/version.c b/src/version.c
index 3d8f86c640..ac5425ddd5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1175,
+/**/
     1174,
 /**/
     1173,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index 93ab3c8c05..3c0336ac4a 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2501,6 +2501,21 @@ may_get_next_line(char_u *whitep, char_u **arg, cctx_T *cctx)
     return OK;
 }
 
+/*
+ * Idem, and give an error when failed.
+ */
+    static int
+may_get_next_line_error(char_u *whitep, char_u **arg, cctx_T *cctx)
+{
+    if (may_get_next_line(whitep, arg, cctx) == FAIL)
+    {
+	emsg(_("E1097: line incomplete"));
+	return FAIL;
+    }
+    return OK;
+}
+
+
 // Structure passed between the compile_expr* functions to keep track of
 // constants that have been parsed but for which no code was produced yet.  If
 // possible expressions on these constants are applied at compile time.  If
@@ -3588,8 +3603,11 @@ compile_subscript(
 
 	    // If a following line starts with "->{" or "->X" advance to that
 	    // line, so that a line break before "->" is allowed.
-	    if (next != NULL && next[0] == '-' && next[1] == '>'
-		    && (next[2] == '{' || ASCII_ISALPHA(next[2])))
+	    // Also if a following line starts with ".x".
+	    if (next != NULL &&
+		    ((next[0] == '-' && next[1] == '>'
+				 && (next[2] == '{' || ASCII_ISALPHA(next[2])))
+		    || (next[0] == '.' && ASCII_ISALPHA(next[1]))))
 	    {
 		next = next_line_from_context(cctx, TRUE);
 		if (next == NULL)
@@ -3672,11 +3690,13 @@ compile_subscript(
 
 	    ++p;
 	    *arg = skipwhite(p);
-	    if (may_get_next_line(p, arg, cctx) == FAIL)
+	    if (may_get_next_line_error(p, arg, cctx) == FAIL)
 		return FAIL;
 	    if (compile_expr0(arg, cctx) == FAIL)
 		return FAIL;
 
+	    if (may_get_next_line_error(p, arg, cctx) == FAIL)
+		return FAIL;
 	    if (**arg != ']')
 	    {
 		emsg(_(e_missbrac));