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-rw-r--r--src/libproc_macro_tokens/parse.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libproc_macro_tokens/parse.rs b/src/libproc_macro_tokens/parse.rs
index 9af8a68cdcf..5ab4fcd5dab 100644
--- a/src/libproc_macro_tokens/parse.rs
+++ b/src/libproc_macro_tokens/parse.rs
@@ -15,12 +15,12 @@ extern crate syntax;
 use syntax::parse::{ParseSess, filemap_to_tts};
 use syntax::tokenstream::TokenStream;
 
-/// Map a string to tts, using a made-up filename. For example, `lex(15)` will return a
+/// Map a string to tts, using a made-up filename. For example, `lex("15")` will return a
 /// TokenStream containing the literal 15.
 pub fn lex(source_str: &str) -> TokenStream {
     let ps = ParseSess::new();
     TokenStream::from_tts(filemap_to_tts(&ps,
-                                         ps.codemap().new_filemap("procmacro_lex".to_string(),
+                                         ps.codemap().new_filemap("<procmacro_lex>".to_string(),
                                                                   None,
                                                                   source_str.to_owned())))
 }