From d4fd8d01eb9b57f1ee7b770ca24fc5e121b49edc Mon Sep 17 00:00:00 2001
From: Asko Nomm <asko@bien.ee>
Date: Sun, 10 Apr 2022 05:16:34 +0200
Subject: Fix #9: Underscores in links get rendered into

---
 src/clarktown/parsers.clj                | 12 ++++++------
 src/clarktown/parsers/link_and_image.clj | 12 +++++++++---
 2 files changed, 15 insertions(+), 9 deletions(-)

(limited to 'src/clarktown')

diff --git a/src/clarktown/parsers.clj b/src/clarktown/parsers.clj
index b5b6132..cd909b3 100644
--- a/src/clarktown/parsers.clj
+++ b/src/clarktown/parsers.clj
@@ -20,26 +20,26 @@
    {:matcher horizontal-line-block/is?
     :renderers [horizontal-line-block/render]}
    {:matcher heading-block/is?
-    :renderers [bold/render
+    :renderers [link-and-image/render
+                bold/render
                 italic/render
                 inline-code/render
                 strikethrough/render
-                link-and-image/render
                 heading-block/render]}
    {:matcher quote-block/is?
     :renderers [quote-block/render]}
    {:matcher code-block/is?
     :renderers [code-block/render]}
    {:matcher list-block/is?
-    :renderers [bold/render
+    :renderers [link-and-image/render
+                bold/render
                 italic/render
                 inline-code/render
                 strikethrough/render
-                link-and-image/render
                 list-block/render]}
-   {:renderers [bold/render
+   {:renderers [link-and-image/render
+                bold/render
                 italic/render
                 inline-code/render
                 strikethrough/render
-                link-and-image/render
                 paragraph-block/render]}])
diff --git a/src/clarktown/parsers/link_and_image.clj b/src/clarktown/parsers/link_and_image.clj
index 3dbbac7..fb8ad31 100644
--- a/src/clarktown/parsers/link_and_image.clj
+++ b/src/clarktown/parsers/link_and_image.clj
@@ -3,18 +3,24 @@
     [clojure.string :as string]))
 
 
+(defn encode-href
+  [href]
+  (-> href
+      (string/replace "_" "&#95;")))
+
+
 (defn render
   "Renders all occurring links and images."
   [block _]
   (loop [block block
-         matches (-> (re-seq #"\!?\[(\w+( \w+|\.|\,)*)\]\((.*?)\)" block)
+         matches (-> (re-seq #"\!?\[(\w+( \w+)*)\]\((.*?)\)" block)
                      distinct)]
     (if (empty? matches)
       block
       (let [[whole-match label _ href] (first matches)
             image? (string/starts-with? whole-match "!")
-            image (str "<img src=\"" href "\" alt=\"" label "\">")
-            link (str "<a href=\"" href "\">" label "</a>")]
+            image (str "<img src=\"" (encode-href href) "\" alt=\"" label "\">")
+            link (str "<a href=\"" (encode-href href) "\">" label "</a>")]
         (recur (if image?
                  (string/replace block whole-match image)
                  (string/replace block whole-match link))
-- 
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