Add support for the base keyword argument to Dir.[].

Author: nirvdrum

CHANGELOG.md

@@ -35,7 +35,7 @@ Compatibility:
 
 * Yield different number of arguments for `Hash#each` and `Hash#each_pair` based
   on the block arity like MRI (#1629).
-* Add support for the `base` keyword argument to `Dir.glob`.
+* Add support for the `base` keyword argument to `Dir.{[], glob}`.
 
 # 1.0 RC 14
 

spec/tags/core/dir/element_reference_tags.txt

@@ -4,9 +4,3 @@ fails:Dir.[] matches non-dotfiles with '*'
 fails:Dir.[] matches non-dotfiles in the current directory with '**'
 fails:Dir.[] recursively matches any nondot subdirectories with '**/'
 fails:Dir.[] matches dot or non-dotfiles with '{,.}*'
-fails:Dir.[] :base option passed matches entries only from within the specified directory
-fails:Dir.[] :base option passed accepts both relative and absolute paths
-fails:Dir.[] :base option passed returns [] if specified path does not exist
-fails:Dir.[] :base option passed returns [] if specified path is a file
-fails:Dir.[] :base option passed handles '' as current directory path
-fails:Dir.[] :base option passed handles nil as current directory path

src/main/ruby/core/dir.rb

@@ -209,14 +209,14 @@ def home(user=nil)
       PrivateFile.expand_path("~#{user}")
     end
 
-    def [](*patterns)
+    def [](*patterns, base: nil)
       if patterns.size == 1
         pattern = Truffle::Type.coerce_to_path(patterns[0], false)
         return [] if pattern.empty?
         patterns = glob_split pattern
       end
 
-      glob patterns
+      glob patterns, base: base
     end
 
     def glob(pattern, flags=0, base: nil, &block)