return a Vector from keys(::RegexMatch)

correct test of RegexMatch keys

Author: oxinabox

base/regex.jl

@@ -141,7 +141,7 @@ end
 
 function keys(m::RegexMatch)
     idx_to_capture_name = PCRE.capture_names(m.regex.regex)
-    return ntuple(length(m.captures)) do i
+    return map(eachindex(m.captures)) do i
         # If the capture group is named, return it's name, else return it's index
         get(idx_to_capture_name, i, i)
     end

test/regex.jl

@@ -81,7 +81,7 @@
         @test !haskey(m, "foo")
         @test (m[:a], m[2], m["b"]) == ("x", "y", "z")
         @test sprint(show, m) == "RegexMatch(\"xyz\", a=\"x\", 2=\"y\", b=\"z\")"
-        @test keys(m) = (:a, 2, :b)
+        @test keys(m) == [:a, 2, :b]
     end
 
     # Backcapture reference in substitution string