Add ruby-standard formatter

apheleia.el

@@ -129,6 +129,8 @@
     (purs-tidy . (npx "purs-tidy" "format"))
     (rubocop . ("rubocop" "--stdin" filepath "--auto-correct"
                 "--stderr" "--format" "quiet" "--fail-level" "fatal"))
+    (ruby-standard . ("standardrb" "--stdin" filepath "--fix" "--stderr"
+                      "--format" "quiet" "--fail-level" "fatal"))
     (shfmt . ("shfmt"
               "-filename" filepath
               "-ln" (cl-case (bound-and-true-p sh-shell)

test/formatters/installers/ruby-standard.bash

@@ -0,0 +1,3 @@
+apt-get install -y ruby ruby-dev gcc
+
+gem install standard

test/formatters/samplecode/ruby-standard/in.rb

@@ -0,0 +1 @@
+../prettier-ruby/in.rb

test/formatters/samplecode/ruby-standard/out.rb

@@ -0,0 +1,16 @@
+d = [30644250780, 9003106878,
+  30636278846, 66641217692, 4501790980,
+  671_24_603036, 131_61973916, 66_606629_920,
+  30642677916, 30643069058]; a, s = [], $*[0]
+s.each_byte { |b|
+  a << ("%036b" % d[b
+   .chr.to_i]).scan(/\d{6}/)
+}
+a.transpose.each { |a|
+  a.join.each_byte { |i|
+    print (i == 49) ? \
+             ($*[1] || "#") \
+               :32.chr
+  }
+  puts
+}