Re: [PATCH] Updated C# userdiff patterns.

> New keywords: foreach, break, in, try, finally, as, is, typeof, var,
> default, fixed, checked, unchecked, this, lock, readonly, unsafe,
> ref, out, base, null, delegate, continue.
> 
> Removed keywords: instanceof. It's only in Java.
> Moved keywords to happen before modifier parsing, as matching a keyword
> will stop modifiers from being matched.
> 
> Added method modifiers: extern, abstract.
> 
> Added properties modifiers: abstract.
> 
> Added parsing of events and delegates, which are like properties, but
> take an extra keyword.
> 
> The reasoning behind adding unsafe to keywords is being also a
> statement that can happen inline in code to mention blocks which are
> unsafe. Also, delegates are not necessarily declared in class bodies,
> but can also happen inline in other functions.
> 
> Keywords are based on MSDN docs.
> 
> Signed-off-by: Marius Ungureanu <marius.ungureanu@xamarin.com>

> ---
>  userdiff.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/userdiff.c b/userdiff.c
> index fad52d6..7612c5d 100644
> --- a/userdiff.c
> +++ b/userdiff.c
> @@ -133,14 +133,14 @@ PATTERNS("cpp",
>  	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lLuU]*"
>  	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*"),
>  PATTERNS("csharp",
> -	 /* Keywords */
> -	 "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"
>  	 /* Methods and constructors */
> -	 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"
> -	 /* Properties */
> -	 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"
> +	 "^[ \t]*(((abstract|extern|internal|new|override|private|protected|public|sealed|static|unsafe|virtual)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"
> +	 /* Properties, events, delegates */
> +	 "^[ \t]*(((abstract|internal|new|override|private|protected|public|sealed|static|unsafe|virtual)[ \t]+)*((delegate|event)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"
>  	 /* Type definitions */
> -	 "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n"
> +	 "^[ \t]*(((abstract|internal|new|override|partial|private|protected|public|sealed|static|unsafe)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n"
> +	 /* Keywords */
> +	 "!^[ \t]*(as|base|break|case|catch|checked|continue|default|delegate|do|else|finally|fixed|for|foreach|if|in|is|lock|new|null|out|readonly|ref|return|switch|this|throw|try|typeof|unchecked|unsafe|using|var|while)\n"
>  	 /* Namespace */
>  	 "^[ \t]*(namespace[ \t]+.*)$",
>  	 /* -- */