From 43349e0fd2fb4cd1ec62a57579c2bdd4110ae063 Mon Sep 17 00:00:00 2001
From: Shylock Hg <33566796+Shylock-Hg@users.noreply.github.com>
Date: Wed, 30 Nov 2022 10:35:17 +0800
Subject: [PATCH 1/2] Extend white space in unicode.

---
 src/parser/scanner.lex          | 7 +++++--
 src/parser/test/ScannerTest.cpp | 5 +++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/parser/scanner.lex b/src/parser/scanner.lex
index 2e9f794df92..828a5c7b949 100644
--- a/src/parser/scanner.lex
+++ b/src/parser/scanner.lex
@@ -35,7 +35,10 @@ static constexpr size_t MAX_STRING = 4096;
 %x LB_STR
 %x COMMENT
 
-blanks                      ([ \t\n]+)
+black_without_newline       ([ \t\r\xa0])
+blank                       ({black_without_newline}|[\n])
+
+blanks                      ({blank}+)
 
 NOT_IN                      (NOT{blanks}IN)
 NOT_CONTAINS                (NOT{blanks}CONTAINS)
@@ -514,7 +517,7 @@ LABEL_FULL_WIDTH            {CN_EN_FULL_WIDTH}{CN_EN_NUM_FULL_WIDTH}*
                                 throw GraphParser::syntax_error(*yylloc, "Don't allow DOT in label:");
                             }
 
-[ \r\t]                     { }
+{black_without_newline}     { }
 \n                          {
                                 yylineno++;
                                 yylloc->lines(yyleng);
diff --git a/src/parser/test/ScannerTest.cpp b/src/parser/test/ScannerTest.cpp
index bd05a318dd3..f1b0675166e 100644
--- a/src/parser/test/ScannerTest.cpp
+++ b/src/parser/test/ScannerTest.cpp
@@ -532,6 +532,11 @@ TEST(Scanner, Basic) {
 
       CHECK_SEMANTIC_VALUE("label", TokenType::LABEL, "label"),
       CHECK_SEMANTIC_VALUE("label123", TokenType::LABEL, "label123"),
+      // \xA0 is white space in UTF-8 too
+      CHECK_SEMANTIC_VALUE("\xA0"
+                           "abc",
+                           TokenType::LABEL,
+                           "abc"),
 
       CHECK_SEMANTIC_VALUE("123", TokenType::INTEGER, 123),
       CHECK_SEMANTIC_VALUE("0x123", TokenType::INTEGER, 0x123),

From 8e3e733e72f8f5b96a90fa6a4c0d3e66fd9d53b3 Mon Sep 17 00:00:00 2001
From: Shylock Hg <33566796+Shylock-Hg@users.noreply.github.com>
Date: Wed, 30 Nov 2022 18:08:14 +0800
Subject: [PATCH 2/2] Fix typo.

---
 src/parser/scanner.lex | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/parser/scanner.lex b/src/parser/scanner.lex
index 828a5c7b949..a6fedde4a68 100644
--- a/src/parser/scanner.lex
+++ b/src/parser/scanner.lex
@@ -35,8 +35,8 @@ static constexpr size_t MAX_STRING = 4096;
 %x LB_STR
 %x COMMENT
 
-black_without_newline       ([ \t\r\xa0])
-blank                       ({black_without_newline}|[\n])
+blank_without_newline       ([ \t\r\xa0])
+blank                       ({blank_without_newline}|[\n])
 
 blanks                      ({blank}+)
 
@@ -517,7 +517,7 @@ LABEL_FULL_WIDTH            {CN_EN_FULL_WIDTH}{CN_EN_NUM_FULL_WIDTH}*
                                 throw GraphParser::syntax_error(*yylloc, "Don't allow DOT in label:");
                             }
 
-{black_without_newline}     { }
+{blank_without_newline}     { }
 \n                          {
                                 yylineno++;
                                 yylloc->lines(yyleng);