diff --git a/lexers/embedded/rust.xml b/lexers/embedded/rust.xml
index 2ae11b4..f2d7a52 100644
--- a/lexers/embedded/rust.xml
+++ b/lexers/embedded/rust.xml
@@ -218,9 +218,6 @@
       <rule pattern="(DoubleEndedIterator|ExactSizeIterator|IntoIterator|PartialOrd|PartialEq|ToString|Iterator|ToOwned|Default|Result|String|FnOnce|Extend|Option|FnMut|Unpin|Sized|AsRef|AsMut|Clone|None|From|Into|Sync|drop|Send|Drop|Copy|Some|Ord|Err|Box|Vec|Eq|Ok|Fn)\b">
         <token type="NameBuiltin"/>
       </rule>
-      <rule pattern="(is_powerpc64_feature_detected|is_aarch64_feature_detected|is_powerpc_feature_detected|is_mips64_feature_detected|is_mips_feature_detected|is_x86_feature_detected|is_arm_feature_detected|debug_assert_ne|debug_assert_eq|format_args_nl|concat_idents|unimplemented|include_bytes|compile_error|debug_assert|thread_local|trace_macros|macro_rules|format_args|module_path|unreachable|include_str|option_env|global_asm|log_syntax|stringify|assert_ne|assert_eq|llvm_asm|eprintln|include|matches|println|writeln|format|column|assert|concat|eprint|write|panic|print|file|todo|line|env|dbg|vec|cfg|asm)!">
-        <token type="NameFunctionMagic"/>
-      </rule>
       <rule pattern="::\b">
         <token type="Text"/>
       </rule>
@@ -297,6 +294,13 @@
       <rule pattern="\b(r#)?_?([A-Z][A-Z0-9_]*){2,}\b">
         <token type="NameConstant"/>
       </rule>
+      <rule pattern="([a-zA-Z_]\w*!)(\s*)(\(|\[|\{)">
+        <bygroups>
+          <token type="NameFunctionMagic"/>
+          <token type="TextWhitespace"/>
+          <token type="Punctuation"/>
+        </bygroups>
+      </rule>
       <rule pattern="(r#)?[a-zA-Z_]\w*">
         <token type="Name"/>
       </rule>
diff --git a/lexers/testdata/rust/proc_macros.actual b/lexers/testdata/rust/proc_macros.actual
new file mode 100644
index 0000000..5e56e20
--- /dev/null
+++ b/lexers/testdata/rust/proc_macros.actual
@@ -0,0 +1,14 @@
+use smallvec::{smallvec, SmallVec};
+
+lazy_static::lazy_static! {
+    static ref ONE: usize = 1;
+}
+
+fn main() {
+    pretty_assertions::assert_eq!(*ONE, *ONE);
+    let _: SmallVec<[_; 16]> = smallvec![1, 2, 3];
+
+    // And some builtin ones
+    println!("Hello, world!");
+    panic!();
+}
diff --git a/lexers/testdata/rust/proc_macros.expected b/lexers/testdata/rust/proc_macros.expected
new file mode 100644
index 0000000..55947a3
--- /dev/null
+++ b/lexers/testdata/rust/proc_macros.expected
@@ -0,0 +1,92 @@
+[
+  {"type":"Keyword","value":"use"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Name","value":"smallvec"},
+  {"type":"Text","value":"::"},
+  {"type":"Punctuation","value":"{"},
+  {"type":"Name","value":"smallvec"},
+  {"type":"Punctuation","value":","},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Name","value":"SmallVec"},
+  {"type":"Punctuation","value":"};"},
+  {"type":"TextWhitespace","value":"\n\n"},
+  {"type":"Name","value":"lazy_static"},
+  {"type":"Text","value":"::"},
+  {"type":"NameFunctionMagic","value":"lazy_static!"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Punctuation","value":"{"},
+  {"type":"TextWhitespace","value":"\n    "},
+  {"type":"Keyword","value":"static"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Keyword","value":"ref"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"NameConstant","value":"ONE"},
+  {"type":"Text","value":": "},
+  {"type":"KeywordType","value":"usize"},
+  {"type":"Text","value":" "},
+  {"type":"Operator","value":"="},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"LiteralNumberInteger","value":"1"},
+  {"type":"Punctuation","value":";"},
+  {"type":"TextWhitespace","value":"\n"},
+  {"type":"Punctuation","value":"}"},
+  {"type":"TextWhitespace","value":"\n\n"},
+  {"type":"Keyword","value":"fn"},
+  {"type":"Text","value":" "},
+  {"type":"NameFunction","value":"main"},
+  {"type":"Punctuation","value":"()"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Punctuation","value":"{"},
+  {"type":"TextWhitespace","value":"\n    "},
+  {"type":"Name","value":"pretty_assertions"},
+  {"type":"Text","value":"::"},
+  {"type":"NameFunctionMagic","value":"assert_eq!"},
+  {"type":"Punctuation","value":"("},
+  {"type":"Operator","value":"*"},
+  {"type":"NameConstant","value":"ONE"},
+  {"type":"Punctuation","value":","},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Operator","value":"*"},
+  {"type":"NameConstant","value":"ONE"},
+  {"type":"Punctuation","value":");"},
+  {"type":"TextWhitespace","value":"\n    "},
+  {"type":"KeywordDeclaration","value":"let"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Name","value":"_"},
+  {"type":"Text","value":": "},
+  {"type":"NameClass","value":"SmallVec"},
+  {"type":"Operator","value":"\u003c"},
+  {"type":"Punctuation","value":"["},
+  {"type":"Name","value":"_"},
+  {"type":"Punctuation","value":";"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"LiteralNumberInteger","value":"16"},
+  {"type":"Punctuation","value":"]"},
+  {"type":"Operator","value":"\u003e"},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"Operator","value":"="},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"NameFunctionMagic","value":"smallvec!"},
+  {"type":"Punctuation","value":"["},
+  {"type":"LiteralNumberInteger","value":"1"},
+  {"type":"Punctuation","value":","},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"LiteralNumberInteger","value":"2"},
+  {"type":"Punctuation","value":","},
+  {"type":"TextWhitespace","value":" "},
+  {"type":"LiteralNumberInteger","value":"3"},
+  {"type":"Punctuation","value":"];"},
+  {"type":"TextWhitespace","value":"\n\n    "},
+  {"type":"CommentSingle","value":"// And some builtin ones\n"},
+  {"type":"TextWhitespace","value":"    "},
+  {"type":"NameFunctionMagic","value":"println!"},
+  {"type":"Punctuation","value":"("},
+  {"type":"LiteralString","value":"\"Hello, world!\""},
+  {"type":"Punctuation","value":");"},
+  {"type":"TextWhitespace","value":"\n    "},
+  {"type":"NameFunctionMagic","value":"panic!"},
+  {"type":"Punctuation","value":"();"},
+  {"type":"TextWhitespace","value":"\n"},
+  {"type":"Punctuation","value":"}"},
+  {"type":"TextWhitespace","value":"\n"}
+]