Fixed a format issue.

2 files changed, 5 insertions, 2 deletions

diff --git a/makefile b/makefile
index 83f9c5d..99028e4 100644
--- a/makefile
+++ b/makefile
@@ -12,7 +12,7 @@ SRC_PATH = ./src
 LIBS =
 # General compiler flags
 COMPILE_FLAGS = -Wall -Wextra
-CXXFLAGS = -std=c++17 -DYUE_UTF8_IMPL
+CXXFLAGS = -std=c++20 -DYUE_UTF8_IMPL
 # Additional release-specific flags
 RCOMPILE_FLAGS = -DNDEBUG -O3
 # Additional debug-specific flags
diff --git a/src/yuescript/yue_ast.cpp b/src/yuescript/yue_ast.cpp
index 9c398c8..3953f97 100644
--- a/src/yuescript/yue_ast.cpp
+++ b/src/yuescript/yue_ast.cpp
@@ -790,6 +790,7 @@ static bool isInBlockExp(ast_node* node, bool last = false) {
         return false;
 }
 std::string Comprehension_t::to_string(void* ud) const {
+        auto info = reinterpret_cast<YueFormat*>(ud);
         if (items.size() != 2 || !ast_is<CompFor_t>(items.back())) {
                 if (items.size() == 1) {
                         str_list temp;
@@ -799,6 +800,9 @@ std::string Comprehension_t::to_string(void* ud) const {
                         if (temp.size() > 0) {
                                 temp.front().insert(0, temp.front()[0] == '[' ? " "s : ""s);
                         }
+                        if (std::string_view{temp.front().c_str(), 3} == "for"sv) {
+                                return "[\n"s + info->ind() + join(temp, ", "sv) + '\n' + info->ind() + ']';
+                        }
                         return '[' + join(temp, ", "sv) + ",]"s;
                 } else {
                         bool hasInBlockExp = false;
@@ -809,7 +813,6 @@ std::string Comprehension_t::to_string(void* ud) const {
                                 }
                         }
                         if (hasInBlockExp) {
-                                auto info = reinterpret_cast<YueFormat*>(ud);
                                 str_list temp;
                                 temp.emplace_back("["s);
                                 info->pushScope();