From ceb0d72396d6181104643b3ce403fddeb7391a98 Mon Sep 17 00:00:00 2001
From: mackie <macklinu@users.noreply.github.com>
Date: Thu, 25 Apr 2019 01:51:36 -0700
Subject: [PATCH] fix(gatsby-transformer-remark): fix excerpt generation -
 strip excessive white spaces, extract alt from images (#12878)

---
 .../src/__tests__/extend-node.js              | 19 +++++++++++++++++++
 .../src/extend-node-type.js                   | 10 +++++++---
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/packages/gatsby-transformer-remark/src/__tests__/extend-node.js b/packages/gatsby-transformer-remark/src/__tests__/extend-node.js
index 7933d6f9aeec7..572ca78baa5bf 100644
--- a/packages/gatsby-transformer-remark/src/__tests__/extend-node.js
+++ b/packages/gatsby-transformer-remark/src/__tests__/extend-node.js
@@ -378,6 +378,25 @@ Where oh [*where*](nick.com) **_is_** ![that pony](pony.png)?`,
     }
   )
 
+  bootstrapTest(
+    `excerpt does have missing words and extra spaces`,
+    `---
+title: "my little pony"
+date: "2017-09-18T23:19:51.246Z"
+---
+
+Where oh [*where*](nick.com) **_is_** ![that pony](pony.png)?`,
+    `excerpt
+      frontmatter {
+          title
+      }
+      `,
+    node => {
+      expect(node.excerpt).toMatch(`Where oh where is that pony?`)
+    },
+    {}
+  )
+
   bootstrapTest(
     `given raw html in the text body, this html is not escaped`,
     `---
diff --git a/packages/gatsby-transformer-remark/src/extend-node-type.js b/packages/gatsby-transformer-remark/src/extend-node-type.js
index f02da84ab1e7e..33442a3a9eb37 100644
--- a/packages/gatsby-transformer-remark/src/extend-node-type.js
+++ b/packages/gatsby-transformer-remark/src/extend-node-type.js
@@ -430,17 +430,21 @@ module.exports = (
       }
 
       const text = await getAST(markdownNode).then(ast => {
-        const excerptNodes = []
+        let excerptNodes = []
         visit(ast, node => {
           if (node.type === `text` || node.type === `inlineCode`) {
             excerptNodes.push(node.value)
           }
+          if (node.type === `image`) {
+            excerptNodes.push(node.alt)
+          }
           return
         })
+
         if (!truncate) {
-          return prune(excerptNodes.join(` `), pruneLength, `…`)
+          return prune(excerptNodes.join(``), pruneLength, `…`)
         }
-        return _.truncate(excerptNodes.join(` `), {
+        return _.truncate(excerptNodes.join(``), {
           length: pruneLength,
           omission: `…`,
         })