Add replaceText package option

README.md

@@ -222,7 +222,7 @@ Or, in your `package.json`:
 {
   "name": "my-awesome-package",
   "auto-changelog": {
-    "issueUrl": "https://issues.apache.org/jira/browse/",
+    "issueUrl": "https://issues.apache.org/jira/browse/{id}",
     "issuePattern": "[A-Z]+-\d+"
   }
 }
@@ -235,6 +235,22 @@ If you use a certain pattern before or after the issue number, like `fixes {id}`
 auto-changelog --issue-pattern "[Ff]ixes ([A-Z]+-\d+)"
 ```
 
+#### Replacing text
+
+To insert links or other markup to PR titles and commit messages that appear in the log, use the `replaceText` option in your `package.json`:
+
+```js
+{
+  "name": "my-awesome-package",
+  "auto-changelog": {
+    "replaceText": {
+      "(ABC-\\d+)": "[`$1`](https://issues.apache.org/jira/browse/$1)"
+    }
+  }
+}
+```
+
+Here, any time a pattern like `ABC-123` appears in your log, it will be replaced with a link to the relevant issue in Jira. Each pattern is applied using `string.replace(new RegExp(key, 'g'), value)`.
 
 ### Migrating to `1.x`
 

src/commits.js

@@ -1,6 +1,6 @@
 import semver from 'semver'
 
-import { cmd, isLink } from './utils'
+import { cmd, isLink, replaceText } from './utils'
 
 const COMMIT_SEPARATOR = '__AUTO_CHANGELOG_COMMIT_SEPARATOR__'
 const MESSAGE_SEPARATOR = '__AUTO_CHANGELOG_MESSAGE_SEPARATOR__'
@@ -57,10 +57,10 @@ function parseCommit (commit, remote, options = {}) {
     email,
     date: new Date(date).toISOString(),
     tag: getTag(refs, options),
-    subject: getSubject(message),
+    subject: replaceText(getSubject(message), options),
     message: message.trim(),
     fixes: getFixes(message, remote, options),
-    merge: getMerge(message, remote),
+    merge: getMerge(message, remote, options),
     href: getCommitLink(hash, remote),
     breaking: !!options.breakingPattern && new RegExp(options.breakingPattern).test(message),
     ...getStats(stats.trim())
@@ -128,16 +128,16 @@ function getFixPattern (options) {
   return DEFAULT_FIX_PATTERN
 }
 
-function getMerge (message, remote, mergeUrl) {
+function getMerge (message, remote, options = {}) {
   for (let pattern of MERGE_PATTERNS) {
     const match = message.match(pattern)
     if (match) {
       const id = /^\d+$/.test(match[1]) ? match[1] : match[2]
       const message = /^\d+$/.test(match[1]) ? match[2] : match[1]
       return {
         id,
-        message,
-        href: getMergeLink(id, remote, mergeUrl)
+        message: replaceText(message, options),
+        href: getMergeLink(id, remote)
       }
     }
   }

src/utils.js

@@ -36,3 +36,12 @@ export function isLink (string) {
 export function parseLimit (limit) {
   return limit === 'false' ? false : parseInt(limit, 10)
 }
+
+export function replaceText (string, options) {
+  if (!options.replaceText) {
+    return string
+  }
+  return Object.keys(options.replaceText).reduce((string, pattern) => {
+    return string.replace(new RegExp(pattern, 'g'), options.replaceText[pattern])
+  }, string)
+}

templates/compact.hbs

@@ -17,13 +17,13 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
     > {{niceDate}}
   {{/if}}
   {{#each merges}}
-    - {{message}}{{#if href}} [`#{{id}}`]({{href}}){{/if}}
+    - {{{message}}}{{#if href}} [`#{{id}}`]({{href}}){{/if}}
   {{/each}}
   {{#each fixes}}
-    - {{commit.subject}}{{#each fixes}}{{#if href}} [`#{{id}}`]({{href}}){{/if}}{{/each}}
+    - {{{commit.subject}}}{{#each fixes}}{{#if href}} [`#{{id}}`]({{href}}){{/if}}{{/each}}
   {{/each}}
   {{#each commits}}
-    - {{#if breaking}}**Breaking change:** {{/if}}{{subject}}{{#if href}} [`{{shorthash}}`]({{href}}){{/if}}
+    - {{#if breaking}}**Breaking change:** {{/if}}{{{subject}}}{{#if href}} [`{{shorthash}}`]({{href}}){{/if}}
   {{/each}}
 
 {{/each}}

templates/keepachangelog.hbs

@@ -15,19 +15,19 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
   {{#if merges}}
     ### Merged
     {{#each merges}}
-      - {{message}} {{#if href}}[`#{{id}}`]({{href}}){{/if}}
+      - {{{message}}} {{#if href}}[`#{{id}}`]({{href}}){{/if}}
     {{/each}}
 
   {{/if}}
   {{#if fixes}}
     ### Fixed
     {{#each fixes}}
-      - {{commit.subject}}{{#each fixes}} {{#if href}}[`#{{id}}`]({{href}}){{/if}}{{/each}}
+      - {{{commit.subject}}}{{#each fixes}} {{#if href}}[`#{{id}}`]({{href}}){{/if}}{{/each}}
     {{/each}}
 
   {{/if}}
   {{#commit-list commits heading='### Commits'}}
-    - {{#if breaking}}**Breaking change:** {{/if}}{{subject}} {{#if href}}[`{{shorthash}}`]({{href}}){{/if}}
+    - {{#if breaking}}**Breaking change:** {{/if}}{{{subject}}} {{#if href}}[`{{shorthash}}`]({{href}}){{/if}}
   {{/commit-list}}
 
 {{/each}}

test/commits.js

@@ -69,6 +69,17 @@ describe('parseCommits', () => {
     expect(result.filter(c => c.breaking)).to.have.length(1)
   })
 
+  it('supports replaceText option', async () => {
+    const gitLog = await readFile(join(__dirname, 'data', 'git-log.txt'), 'utf-8')
+    const options = {
+      replaceText: {
+        'breaking': '**BREAKING**'
+      }
+    }
+    const result = parseCommits(gitLog, remotes.github, options)
+    expect(result.filter(c => c.subject === 'Some **BREAKING** change')).to.have.length(1)
+  })
+
   it('invalid startingCommit throws an error', done => {
     const options = { startingCommit: 'not-a-hash' }
     readFile(join(__dirname, 'data', 'git-log.txt'), 'utf-8')
@@ -254,6 +265,20 @@ describe('getMerge', () => {
       })
     })
   })
+
+  it('supports replaceText option', () => {
+    const message = 'Merge pull request #3 from repo/branch\n\nPull request title'
+    const options = {
+      replaceText: {
+        '(..l)': '_$1_'
+      }
+    }
+    expect(getMerge(message, remotes.github, options)).to.deep.equal({
+      id: '3',
+      message: '_Pul_l request t_itl_e',
+      href: 'https://github.com/user/repo/pull/3'
+    })
+  })
 })
 
 describe('getSubject', () => {