From f2d7b705af5a6ef93c93623327e7381deee8b232 Mon Sep 17 00:00:00 2001
From: Jaime Valdemoros <jaimevg1123@gmail.com>
Date: Tue, 16 Jan 2018 22:25:51 +0000
Subject: [PATCH] Pull out default preprocessors into function

---
 src/book/mod.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/book/mod.rs b/src/book/mod.rs
index 8a9ddd01..bc366e39 100644
--- a/src/book/mod.rs
+++ b/src/book/mod.rs
@@ -333,6 +333,10 @@ fn determine_renderers(config: &Config) -> Vec<Box<Renderer>> {
     renderers
 }
 
+fn default_preprocessors() -> Vec<Box<Preprocessor>> {
+    vec![Box::new(LinkPreprocessor::new())]
+}
+
 /// Look at the `MDBook` and try to figure out what preprocessors to run.
 fn determine_preprocessors(config: &Config) -> Result<Vec<Box<Preprocessor>>> {
 
@@ -340,7 +344,7 @@ fn determine_preprocessors(config: &Config) -> Result<Vec<Box<Preprocessor>>> {
         Some(ref p) => p,
         // If no preprocessor field is set, default to the LinkPreprocessor. This allows you
         // to disable the LinkPreprocessor by setting "preprocess" to an empty list.
-        None => return Ok(vec![Box::new(LinkPreprocessor::new())])
+        None => return Ok(default_preprocessors())
     };
 
     let mut preprocessors: Vec<Box<Preprocessor>> = Vec::new();