From 4768a4d8821008793ad1ede12a56346cb5f9bb67 Mon Sep 17 00:00:00 2001
From: Nalin Bhardwaj <nalinbhardwaj@users.noreply.github.com>
Date: Thu, 28 Sep 2017 23:10:31 +0530
Subject: [PATCH] fix file extension regex (#4510)

---
 lib/DDG/Goodie/Calculator.pm | 2 +-
 t/Calculator.t               | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/DDG/Goodie/Calculator.pm b/lib/DDG/Goodie/Calculator.pm
index 2fdd9c371..5647a196d 100644
--- a/lib/DDG/Goodie/Calculator.pm
+++ b/lib/DDG/Goodie/Calculator.pm
@@ -186,7 +186,7 @@ handle query => sub {
     return if $req->query_lc =~ /^0x/i; # hex maybe?
     return if $query =~ /\d+(?:X|x)\.?$/; # websites such as 1337X
     return if $query =~ /score$/;
-    return if $query =~ /^(?:\.\w+)/; # Probably looking at file extensions
+    return if ( $query =~ /^(?:\.\w+)/ && $query !~ $number_re); # Probably looking at file extensions
     return if $query =~ $network;    # Probably want to talk about addresses, not calculations.
     return if $query =~ m/^(\+?\d{1,2}(\s|-)?|\(\d{2})?\(?\d{3,4}\)?(\s|-)?\d{3}(\s|-)?\d{3,4}(\s?x\d+)?$/; # Probably are searching for a phone number, not making a calculation
     return if $query =~ m/^\(\d+\)\s+\d+\d+/;
diff --git a/t/Calculator.t b/t/Calculator.t
index c49372ade..5b4207fd7 100644
--- a/t/Calculator.t
+++ b/t/Calculator.t
@@ -387,6 +387,12 @@ ddg_goodie_test(
     'fact 20' => build_test(
         '20!'
     ),
+    '.32 * 100' => build_test(
+        '.32 * 100'
+    ),
+    '.7 + .32' => build_test(
+        '.7 + .32'
+    ),
 
     ## Trig testing
     'tan 45' => build_test(
@@ -551,6 +557,8 @@ ddg_goodie_test(
     '2/3/09' => undef,
     '21/12/2012' => undef,
     '12/21/2012' => undef,
+    '.7zip * 100' => undef,
+    '.tar64 + 0.3' => undef,
 );
 
 done_testing;