fix: ide: do not highlight escapes in raw strings

Author: jhgg

crates/ide/src/syntax_highlighting.rs

@@ -422,7 +422,10 @@ fn traverse(
                         continue;
                     }
                     highlight_format_string(hl, &string, &expanded_string, range);
-                    highlight_escape_string(hl, &string, range.start());
+
+                    if !string.is_raw() {
+                        highlight_escape_string(hl, &string, range.start());
+                    }
                 }
             } else if ast::ByteString::can_cast(token.kind())
                 && ast::ByteString::can_cast(descended_token.kind())

crates/ide/src/syntax_highlighting/test_data/highlight_strings.html

@@ -159,6 +159,7 @@
 
     <span class="keyword">let</span> <span class="punctuation">_</span> <span class="operator">=</span> <span class="string_literal">"</span><span class="escape_sequence">\x28</span><span class="escape_sequence">\x28</span><span class="escape_sequence">\x00</span><span class="escape_sequence">\x63</span><span class="escape_sequence">\n</span><span class="string_literal">"</span><span class="semicolon">;</span>
     <span class="keyword">let</span> <span class="punctuation">_</span> <span class="operator">=</span> <span class="string_literal">b"</span><span class="escape_sequence">\x28</span><span class="escape_sequence">\x28</span><span class="escape_sequence">\x00</span><span class="escape_sequence">\x63</span><span class="escape_sequence">\n</span><span class="string_literal">"</span><span class="semicolon">;</span>
+    <span class="keyword">let</span> <span class="punctuation">_</span> <span class="operator">=</span> <span class="string_literal">r"\\"</span><span class="semicolon">;</span>
 
     <span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="escape_sequence">\x41</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> A <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>
     <span class="macro">println</span><span class="macro_bang">!</span><span class="parenthesis">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">ничоси</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="comma">,</span> ничоси <span class="operator">=</span> <span class="numeric_literal">92</span><span class="parenthesis">)</span><span class="semicolon">;</span>

crates/ide/src/syntax_highlighting/tests.rs

@@ -505,6 +505,7 @@ fn main() {
 
     let _ = "\x28\x28\x00\x63\n";
     let _ = b"\x28\x28\x00\x63\n";
+    let _ = r"\\";
 
     println!("{\x41}", A = 92);
     println!("{ничоси}", ничоси = 92);