userdiff: update Ada patterns

- Allow extra space in "is new" and "is separate"
- Fix bug in word regex for numbers
Signed-off-by: NAdrian Johnson <ajohnson@redneon.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

t/t4034/ada/expect

@@ -4,7 +4,7 @@
 <BOLD>+++ b/post<RESET>
 <CYAN>@@ -1,13 +1,13 @@<RESET>
 Ada.Text_IO.Put_Line("Hello World<RED>!<RESET><GREEN>?<RESET>");
-1 1e<RED>-<RESET>10 16#FE12#E2 3.141_592 '<RED>x<RESET><GREEN>y<RESET>'
+1 <RED>1e-10<RESET><GREEN>1e10<RESET> 16#FE12#E2 3.141_592 '<RED>x<RESET><GREEN>y<RESET>'
 <RED>a<RESET><GREEN>x<RESET>+<RED>b a<RESET><GREEN>y x<RESET>-<RED>b<RESET>
 <RED>a<RESET><GREEN>y<RESET>
 <GREEN>x<RESET>*<RED>b a<RESET><GREEN>y x<RESET>/<RED>b<RESET>

userdiff.c

@@ -15,13 +15,13 @@ static int drivers_alloc;
 	  word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
 static struct userdiff_driver builtin_drivers[] = {
 IPATTERN("ada",
-	 "!^(.*[ \t])?(is new|renames|is separate)([ \t].*)?$\n"
+	 "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"
 	 "!^[ \t]*with[ \t].*$\n"
 	 "^[ \t]*((procedure|function)[ \t]+.*)$\n"
 	 "^[ \t]*((package|protected|task)[ \t]+.*)$",
 	 /* -- */
 	 "[a-zA-Z][a-zA-Z0-9_]*"
-	 "|[0-9][-+0-9#_.eE]"
+	 "|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?"
 	 "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),
 IPATTERN("fortran",
 	 "!^([C*]|[ \t]*!)\n"