Add macro '%-x**' containing all occurrences of the flag '-x<arg>' or…

… '-x <arg>'.

Flags are added to this macro with the flag and argument
in the original notation and separated from previous by spaces.

Fix #546

docs/manual/macros.md

@@ -39,7 +39,8 @@ macros are available:
 	%**	all arguments (including any processed flags)
 	%#	the number of arguments
 	%{-f}	if present at invocation, the flag f itself (including the argument)
-	%{-f*}	if present at invocation, the argument to flag f
+	%{-f*}	if present at invocation, the argument to the last occurence of flag f
+	%{-f**}	if present at invocation, all occurrences of flag f (flag and argument, space separated) (rpm >= 4.18)
 	%1, %2	the arguments themselves (after getopt(3) processing)
 ```
 

rpmio/macro.c

@@ -859,6 +859,21 @@ static int mbopt(int c, const char *oarg, int oint, void *data)
 	pushMacro(mb->mc, name, NULL, oarg, mb->level, ME_AUTO | ME_LITERAL);
 	free(name);
     }
+
+    rasprintf(&name, "-%c**", c);
+    rpmMacroEntry *mep = findEntry(mb->mc, name, 0, NULL);
+    if (mep && oarg)
+	rasprintf(&body, "%s -%c%s%s", (*mep)->body, c, fill, oarg);
+    else if (mep)
+	rasprintf(&body, "%s -%c", (*mep)->body, c);
+    else if (oarg)
+	rasprintf(&body, "-%c%s%s", c, fill, oarg);
+    else
+	rasprintf(&body, "-%c", c);
+    pushMacro(mb->mc, name, NULL, body, mb->level, ME_AUTO | ME_LITERAL);
+    free(name);
+    free(body);
+
     return 0;
 }