Merge pull request rust-lang#48 from VinithKrishnan/master

Added links to descriptions of XID_start and XID_continue in identifiers section.

Author: steveklabnik

src/identifiers.md

@@ -4,21 +4,25 @@ An identifier is any nonempty Unicode[^non_ascii_idents] string of the following
 
 Either
 
-   * The first character has property `XID_start`
-   * The remaining characters have property `XID_continue`
+   * The first character has property [`XID_start`]
+   * The remaining characters have property [`XID_continue`]
 
 Or
 
    * The first character is `_`
    * The identifier is more than one character, `_` alone is not an identifier
-   * The remaining characters have property `XID_continue`
+   * The remaining characters have property [`XID_continue`]
 
 that does _not_ occur in the set of [keywords].
 
-> **Note**: `XID_start` and `XID_continue` as character properties cover the
+> **Note**: [`XID_start`] and [`XID_continue`] as character properties cover the
 > character ranges used to form the more familiar C and Java language-family
 > identifiers.
 
+
+   
+[`XID_start`]:  http://unicode.org/cldr/utility/list-unicodeset.jsp?a=%5B%3AXID_Start%3A%5D&abb=on&g=&i=
+[`XID_continue`]: http://unicode.org/cldr/utility/list-unicodeset.jsp?a=%5B%3AXID_Continue%3A%5D&abb=on&g=&i=
 [keywords]: ../grammar.html#keywords
 [^non_ascii_idents]: Non-ASCII characters in identifiers are currently feature
   gated. This is expected to improve soon.