[PATCH v1] adding word_regex for go language

Go programming language is one of the promissing language now. Adding built-in driver for the same. This patch contains word_regex for go. As the language specification this has alpha-numeric and under-score for identifiers. It covers all types of number system decimal, octal, hexadecimal. Also can specify signed or usigned number by using "u or U", long number by using "l or L" and exponent term by using "e or E". The following lines cover all types of operator ex. arithmatic, logical, bitwise, assignment etc.. 

Signed-off-by: sourav mondal <redacted>
---

I'm working on go language patterns and will send it soon.
thanks & regards 
sourav

 userdiff.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/userdiff.c b/userdiff.c
index 2f8e078..99f5539 100644
--- a/userdiff.c
+++ b/userdiff.c

@@ -148,6 +148,13 @@ PATTERNS("csharp",
 	 "[a-zA-Z_][a-zA-Z0-9_]*"
 	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
 	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
+PATTERNS("go",
+	  /* word_regex */
+	 "[a-zA-Z_][a-zA-Z0-9]*"/* identifiers */
+	 "|[0-9eE]+[lL]?[uU]?|0[xX]?[0-9a-fA-F]+[uU]?[lL]?" /* numbers */
+	 "|[-+*/%<>&|!^=]="/* operators */
+	 "|--|\\+\\+|&&|<<=|>>=|\\|\\|"
+),
 IPATTERN("css",
 	 "![:;][[:space:]]*$\n"
 	 "^[_a-z0-9].*$",

-- 
2.9.3