patch 8.2.3259: when 'indentexpr' causes an error did_throw may hangv8.2.3259

Problem:    When 'indentexpr' causes an error the did_throw flag may remain
            set.
Solution:   Reset did_throw and show the error. (closes #8677)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/indent.c b/src/indent.c
index 89653c7771..99951c81bf 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -1822,6 +1822,13 @@ get_expr_indent(void)
     check_cursor();
     State = save_State;
 
+    // Reset did_throw, unless 'debug' has "throw" and inside a try/catch.
+    if (did_throw && (vim_strchr(p_debug, 't') == NULL || trylevel == 0))
+    {
+	handle_did_throw();
+	did_throw = FALSE;
+    }
+
     // If there is an error, just keep the current indent.
     if (indent < 0)
 	indent = get_indent();