Fixes #379

trullock · Feb 4, 2024 · 9b3e7cb · 9b3e7cb
1 parent 76ec539
commit 9b3e7cb
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Showing 2 changed files with 16 additions and 4 deletions.
diff --git a/src/NUglify.Tests/Css/Bugs.cs b/src/NUglify.Tests/Css/Bugs.cs
@@ -151,15 +151,26 @@ public void Bug317()
 }").Code);
         }
 
-        [Test]
-        public void Bug343()
+        [Test]
+        public void Bug343()
         {
             Assert.AreEqual("body{border:0 none;border:0 none #f00}", Uglify.Css(@"
 body
 {
 	border: 0 none;
 	border: 0 none #f00;
-}").Code);
+}").Code);
+        }
+
+
+        [Test]
+        public void Bug379()
+        {
+	        Assert.AreEqual(".\\!inline-flex{display:inline-flex!important}", Uglify.Css(@"
+.\!inline-flex {
+    display: inline-flex!important
+}
+").Code);
         }
     }
 }
diff --git a/src/NUglify/Css/CssParser.cs b/src/NUglify/Css/CssParser.cs
@@ -4414,9 +4414,10 @@ bool Append(object obj, TokenType tokenType)
                         for (var ndx = firstIndex + 1; ndx < text.Length; ++ndx)
                         {
                             char nextChar = text[ndx];
+                            char? prevChar = text[ndx - 1];
 
                             // anything at or above 0x80, then it's okay and doesnt need to be escaped
-                            if (nextChar < 0x80)
+                            if (nextChar < 0x80 && prevChar != '\\')
                             {
                                 // only -, _, 0-9, a-z, A-Z are allowed without escapes
                                 // but we also want to NOT escape \ or space characters. If the identifier had