From aa2021011989d8d658ad9d9b454b24e48872f4de Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Tue, 25 Jan 2022 00:21:06 +0330
Subject: [PATCH] LibRegex: Don't return empty vectors from
 RegexStringView::lines()

Instead, return a vector of one empty string.
---
 Userland/Libraries/LibRegex/RegexMatch.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Userland/Libraries/LibRegex/RegexMatch.h b/Userland/Libraries/LibRegex/RegexMatch.h
index ddf402c9f7..7359fcf785 100644
--- a/Userland/Libraries/LibRegex/RegexMatch.h
+++ b/Userland/Libraries/LibRegex/RegexMatch.h
@@ -172,6 +172,9 @@ public:
                 return new_views;
             },
             [](Utf32View view) {
+                if (view.is_empty())
+                    return Vector<RegexStringView> { view };
+
                 Vector<RegexStringView> views;
                 u32 newline = '\n';
                 while (!view.is_empty()) {
@@ -187,6 +190,9 @@ public:
                 return views;
             },
             [](Utf16View view) {
+                if (view.is_empty())
+                    return Vector<RegexStringView> { view };
+
                 Vector<RegexStringView> views;
                 u16 newline = '\n';
                 while (!view.is_empty()) {
@@ -202,6 +208,9 @@ public:
                 return views;
             },
             [](Utf8View const& view) {
+                if (view.is_empty())
+                    return Vector<RegexStringView> { view };
+
                 Vector<RegexStringView> views;
                 auto it = view.begin();
                 auto previous_newline_position_it = it;