Handle nested quote blocks

autoload/elixir/indent.vim

@@ -379,7 +379,7 @@ endfunction
 " function, etc... so we need to first figure out what the innermost structure
 " is then forward execution to the proper handler
 function! elixir#indent#handle_inside_block(context)
-  let start_pattern = '\C\%(\<with\>\|\<if\>\|\<case\>\|\<cond\>\|\<try\>\|\<receive\>\|\<fn\>\|{\|\[\|(\)'
+  let start_pattern = '\C\%(\<with\>\|\<if\>\|\<case\>\|\<cond\>\|\<try\>\|\<receive\>\|\<fn\>\|\<quote\>\|{\|\[\|(\)'
   let end_pattern = '\C\%(\<end\>\|\]\|}\|)\)'
   " hack - handle do: better
   let block_info = searchpairpos(start_pattern, '', end_pattern, 'bnW', "line('.') == " . line('.') . " || elixir#indent#searchpair_back_skip() || getline(line('.')) =~ 'do:'", max([0, a:context.lnum - g:elixir_indent_max_lookbehind]))
@@ -394,6 +394,7 @@ function! elixir#indent#handle_inside_block(context)
     let never_match = ''
     let config = {
           \'f': {'aligned_clauses': s:keyword('end'), 'pattern_match_clauses': never_match},
+          \'q': {'aligned_clauses': s:keyword('end'), 'pattern_match_clauses': never_match},
           \'c': {'aligned_clauses': s:keyword('end'), 'pattern_match_clauses': never_match},
           \'t': {'aligned_clauses': s:keyword('end\|catch\|rescue\|after\|else'), 'pattern_match_clauses': s:keyword('catch\|rescue\|else')},
           \'r': {'aligned_clauses': s:keyword('end\|after'), 'pattern_match_clauses': s:keyword('after')},

spec/indent/quote_spec.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'Indenting quote statements' do
+  i <<~EOF
+  defmacro foo do
+    quote do
+      unquote(foo)
+    end
+  end
+  EOF
+
+  i <<~EOF
+  defmacro foo do
+    if 1 = 1 do
+      quote do
+        unquote(foo)
+      end
+    end
+  end
+  EOF
+end