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Detect confusing unicode characters and show the alternative

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Ravi Shankar
2015-11-15 02:37:49 +05:30
parent 929ca3cb51
commit 7f63c7cf4c
4 changed files with 211 additions and 1 deletions
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4
src/libsyntax/parse/lexer/mod.rs
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@@ -26,6 +26,7 @@ use std::rc::Rc;
pub use ext::tt::transcribe::{TtReader, new_tt_reader, new_tt_reader_with_doc_flag};
pub mod comments;
mod unicode_chars;
pub trait Reader {
fn is_eof(&self) -> bool;
@@ -1224,7 +1225,8 @@ impl<'a> StringReader<'a> {
c => {
let last_bpos = self.last_pos;
let bpos = self.pos;
panic!(self.fatal_span_char(last_bpos, bpos, "unknown start of token", c));
unicode_chars::check_for_substitution(&self, c);
panic!(self.fatal_span_char(last_bpos, bpos, "unknown start of token", c))
}
}
}