Add --append-git-log option

Closes #118
Fixes #117

README.md

@@ -41,6 +41,7 @@ Options:
       --include-branch [branch]       # one or more branches to include commits from, comma separated
       --release-summary               # display tagged commit message body as release summary
       --handlebars-setup [file]       # handlebars setup file
+      --append-git-log [string]       # string to append to git log command
       --stdout                        # output changelog to stdout
   -V, --version                       # output the version number
   -h, --help                          # output usage information

src/commits.js

@@ -21,7 +21,7 @@ const MERGE_PATTERNS = [
 export async function fetchCommits (remote, options, branch = null, onProgress) {
   const command = branch ? `git log ${branch}` : 'git log'
   const format = await getLogFormat()
-  const log = await cmd(`${command} --shortstat --pretty=format:${format}`, onProgress)
+  const log = await cmd(`${command} --shortstat --pretty=format:${format} ${options.appendGitLog}`, onProgress)
   return parseCommits(log, remote, options)
 }
 

src/run.js

@@ -15,7 +15,8 @@ const DEFAULT_OPTIONS = {
   commitLimit: 3,
   backfillLimit: 3,
   tagPrefix: '',
-  sortCommits: 'relevance'
+  sortCommits: 'relevance',
+  appendGitLog: ''
 }
 
 const PACKAGE_FILE = 'package.json'
@@ -44,6 +45,7 @@ async function getOptions (argv) {
     .option('--include-branch <branch>', 'one or more branches to include commits from, comma separated', str => str.split(','))
     .option('--release-summary', 'use tagged commit message body as release summary')
     .option('--handlebars-setup <file>', 'handlebars setup file')
+    .option('--append-git-log <string>', 'string to append to git log command')
     .option('--stdout', 'output changelog to stdout')
     .version(version)
     .parse(argv)

src/utils.js

@@ -18,7 +18,7 @@ export function formatBytes (bytes) {
 
 // Simple util for calling a child process
 export function cmd (string, onProgress) {
-  const [ cmd, ...args ] = string.split(' ')
+  const [ cmd, ...args ] = string.trim().split(' ')
   return new Promise((resolve, reject) => {
     const child = spawn(cmd, args)
     let data = ''