From 81e3b8dd7624f57292f5c1884a81c80187f51a5a Mon Sep 17 00:00:00 2001
From: Rick Sherman <rick@shermdog.com>
Date: Tue, 7 Jan 2020 17:33:07 -0600
Subject: [PATCH] Allow spaces after filter pipes in Jinja lexer (#1385)

This commit allows for optional spaces after filter pipes in the Jinja lexer.
---
 lib/rouge/lexers/jinja.rb | 2 +-
 spec/visual/samples/jinja | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/rouge/lexers/jinja.rb b/lib/rouge/lexers/jinja.rb
index 815f14927a..bf5bf97267 100644
--- a/lib/rouge/lexers/jinja.rb
+++ b/lib/rouge/lexers/jinja.rb
@@ -57,7 +57,7 @@ def self.word_operators
 
       state :filter do
         # Filters are called like variable|foo(arg1, ...)
-        rule %r/(\|)(\w+)/ do
+        rule %r/(\|\s*)(\w+)/ do
           groups Operator, Name::Function
         end
       end
diff --git a/spec/visual/samples/jinja b/spec/visual/samples/jinja
index c1d31905da..1c9e61f7e0 100644
--- a/spec/visual/samples/jinja
+++ b/spec/visual/samples/jinja
@@ -12,7 +12,9 @@
 
 {# A comment #}
 
-Hello {{ user.name|capitalize }} !
+Hello {{ user.name|capitalize | upper }} !
+
+Cool list filter {{ listx | join(', ') }}
 
 {% if user.admin is true %}
   <span>You're an admin !</span>