From d97ff917bd7d8b5b2fb37193dd44dcfa5fd72843 Mon Sep 17 00:00:00 2001
From: alexlamsl <alexlamsl@gmail.com>
Date: Wed, 7 Aug 2024 11:38:37 +0300
Subject: [PATCH] support `ascii_only` in template strings

closes #5910
---
 lib/output.js              |  4 +--
 test/compress/templates.js | 64 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 2 deletions(-)

diff --git a/lib/output.js b/lib/output.js
index 859ec28c2e..2982cc3f60 100644
--- a/lib/output.js
+++ b/lib/output.js
@@ -1788,12 +1788,12 @@ function OutputStream(options) {
         if (self.tag) self.tag.print(output);
         output.print("`");
         for (var i = 0; i < self.expressions.length; i++) {
-            output.print(self.strings[i]);
+            output.print(output.to_utf8(self.strings[i]));
             output.print("${");
             self.expressions[i].print(output);
             output.print("}");
         }
-        output.print(self.strings[i]);
+        output.print(output.to_utf8(self.strings[i]));
         output.print("`");
     });
     DEFPRINT(AST_BigInt, function(output) {
diff --git a/test/compress/templates.js b/test/compress/templates.js
index 4658f0d882..604f9dedf5 100644
--- a/test/compress/templates.js
+++ b/test/compress/templates.js
@@ -429,6 +429,70 @@ pure_funcs: {
     node_version: ">=4"
 }
 
+ascii_only: {
+    beautify = {
+        ascii_only: true,
+    }
+    options = {
+        templates: false,
+    }
+    input: {
+        console.log(`\ud801\udc37\ud801𐐷${42}\u{10437}`);
+    }
+    expect_exact: "console.log(`\\ud801\\udc37\\ud801\\ud801\\udc37${42}\\u{10437}`);"
+    expect_stdout: "𐐷\ud801𐐷42𐐷"
+    // non-BMP support is platform-dependent on Node.js v4
+    node_version: ">=6"
+}
+
+ascii_only_templates: {
+    beautify = {
+        ascii_only: true,
+    }
+    options = {
+        templates: true,
+    }
+    input: {
+        console.log(`\ud801\udc37\ud801𐐷${42}\u{10437}`);
+    }
+    expect_exact: "console.log(`\\ud801\\udc37\\ud801\\ud801\\udc37${42}\\ud801\\udc37`);"
+    expect_stdout: "𐐷\ud801𐐷42𐐷"
+    // non-BMP support is platform-dependent on Node.js v4
+    node_version: ">=6"
+}
+
+unicode: {
+    beautify = {
+        ascii_only: false,
+    }
+    options = {
+        templates: false,
+    }
+    input: {
+        console.log(`\ud801\udc37\ud801𐐷${42}\u{10437}`);
+    }
+    expect_exact: "console.log(`\\ud801\\udc37\\ud801𐐷${42}\\u{10437}`);"
+    expect_stdout: "𐐷\ud801𐐷42𐐷"
+    // non-BMP support is platform-dependent on Node.js v4
+    node_version: ">=6"
+}
+
+unicode_templates: {
+    beautify = {
+        ascii_only: false,
+    }
+    options = {
+        templates: true,
+    }
+    input: {
+        console.log(`\ud801\udc37\ud801𐐷${42}\u{10437}`);
+    }
+    expect_exact: "console.log(`𐐷\\ud801𐐷${42}𐐷`);"
+    expect_stdout: "𐐷\ud801𐐷42𐐷"
+    // non-BMP support is platform-dependent on Node.js v4
+    node_version: ">=6"
+}
+
 issue_4604: {
     options = {
         collapse_vars: true,