From 8f7c468bf851dbaba72bb230bae42034de7d2203 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20G=C3=B6m=C3=B6ri?= <gomoripeti@gmail.com>
Date: Tue, 25 Sep 2018 16:49:22 +0200
Subject: Document bit_size in match-specs and allow in fun2ms

It is already allowed in match-specs.
---
 erts/doc/src/match_spec.xml     | 7 +++++--
 lib/stdlib/src/ms_transform.erl | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/erts/doc/src/match_spec.xml b/erts/doc/src/match_spec.xml
index 5cd6dc1750..48e502739a 100644
--- a/erts/doc/src/match_spec.xml
+++ b/erts/doc/src/match_spec.xml
@@ -113,6 +113,7 @@
         <c><![CDATA[length]]></c> | <c><![CDATA[map_get]]></c> |
         <c><![CDATA[map_size]]></c> | <c><![CDATA[node]]></c> |
         <c><![CDATA[round]]></c> | <c><![CDATA[size]]></c> |
+        <c><![CDATA[bit_size]]></c> |
         <c><![CDATA[tl]]></c> | <c><![CDATA[trunc]]></c> |
         <c><![CDATA['+']]></c> | <c><![CDATA['-']]></c> |
         <c><![CDATA['*']]></c> | <c><![CDATA['div']]></c> |
@@ -194,6 +195,7 @@
         <c><![CDATA[length]]></c> | <c><![CDATA[map_get]]></c> |
         <c><![CDATA[map_size]]></c> | <c><![CDATA[node]]></c> |
         <c><![CDATA[round]]></c> | <c><![CDATA[size]]></c> |
+        <c><![CDATA[bit_size]]></c> |
         <c><![CDATA[tl]]></c> | <c><![CDATA[trunc]]></c> |
         <c><![CDATA['+']]></c> | <c><![CDATA['-']]></c> |
         <c><![CDATA['*']]></c> | <c><![CDATA['div']]></c> |
@@ -269,8 +271,9 @@
             other <c>false</c> to return <c><![CDATA[true]]></c>; otherwise
             <c><![CDATA['xor']]></c> returns false.</p>
         </item>
-        <tag><c>abs</c>, <c>element</c>, <c>hd</c>, <c>length</c>, <c>node</c>,
-          <c>round</c>, <c>size</c>, <c>tl</c>, <c>trunc</c>, <c>'+'</c>,
+        <tag><c>abs</c>, <c>element</c>, <c>hd</c>, <c>length</c>,
+          <c>map_get</c>, <c>map_size</c>, <c>node</c>, <c>round</c>,
+          <c>size</c>, <c>bit_size</c>, <c>tl</c>, <c>trunc</c>, <c>'+'</c>,
           <c>'-'</c>, <c>'*'</c>, <c>'div'</c>, <c>'rem'</c>, <c>'band'</c>,
           <c>'bor'</c>, <c>'bxor'</c>, <c>'bnot'</c>, <c>'bsl'</c>,
           <c>'bsr'</c>, <c>'>'</c>, <c>'>='</c>, <c>'&lt;'</c>, <c>'=&lt;'</c>,
diff --git a/lib/stdlib/src/ms_transform.erl b/lib/stdlib/src/ms_transform.erl
index 3845e35e9b..6d243e1bec 100644
--- a/lib/stdlib/src/ms_transform.erl
+++ b/lib/stdlib/src/ms_transform.erl
@@ -946,6 +946,7 @@ real_guard_function(node,0) -> true;
 real_guard_function(node,1) -> true;
 real_guard_function(round,1) -> true;
 real_guard_function(size,1) -> true;
+real_guard_function(bit_size,1) -> true;
 real_guard_function(map_size,1) -> true;
 real_guard_function(map_get,2) -> true;
 real_guard_function(tl,1) -> true;
-- 
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