document that \r and \t are disallowed

Finishes ninja-build#394.
cjhopman · Aug 10, 2012 · 49dd59d · 49dd59d
1 parent a9b7ae4
commit 49dd59d
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/doc/manual.asciidoc b/doc/manual.asciidoc
@@ -524,7 +524,9 @@ Lexical syntax
 
 Ninja is mostly encoding agnostic, as long as the bytes Ninja cares
 about (like slashes in paths) are ASCII.  This means e.g. UTF-8 or
-ISO-8859-1 input files ought to work.
+ISO-8859-1 input files ought to work.  (To simplify some code, tabs
+and carriage returns are currently disallowed; this could be fixed if
+it really mattered to you.)
 
 Comments begin with `#` and extend to the end of the line.