关于 \newcommand 的问题

[Alpha1022]

如果我写

$$
\newcommand{\lcm}{\operatorname{lcm}}
\newcommand{\type}{\text{type}}
\newcommand{\ffrac}[2]{\left\lfloor\frac{#1}{#2}\right\rfloor}
\prod_{i=1}^{A}\prod_{j=1}^{B}\prod_{k=1}^{C}\left(\frac{\lcm(i,j)}{\gcd(i,k)}\right)^{f(\type)} = \prod_{i=1}^{A}\prod_{j=1}^{B}\prod_{k=1}^{C}\left(\frac{ij}{\gcd(i,j)\gcd(i,k)}\right)^{f(\type)}
$$

的话会报错为

$ hexo g
INFO  Start processing
FATAL Something's wrong. Maybe you can find the solution here: http://hexo.io/docs/troubleshooting.html
Template render error: (unknown path)
  Error: expected end of comment, got end of file
    at Object._prettifyError (D:\blog\node_modules\nunjucks\src\lib.js:36:11)
    at Template.render (D:\blog\node_modules\nunjucks\src\environment.js:526:21)
    at Environment.renderString (D:\blog\node_modules\nunjucks\src\environment.js:364:17)
    at D:\blog\node_modules\hexo\lib\extend\tag.js:62:48
    at tryCatcher (D:\blog\node_modules\bluebird\js\release\util.js:16:23)
    at Function.Promise.fromNode.Promise.fromCallback (D:\blog\node_modules\bluebird\js\release\promise.js:180:30)
    at Tag.render (D:\blog\node_modules\hexo\lib\extend\tag.js:62:18)
    at Object.onRenderEnd (D:\blog\node_modules\hexo\lib\hexo\post.js:282:20)
    at D:\blog\node_modules\hexo\lib\hexo\render.js:65:19
    at tryCatcher (D:\blog\node_modules\bluebird\js\release\util.js:16:23)
    at Promise._settlePromiseFromHandler (D:\blog\node_modules\bluebird\js\release\promise.js:512:31)
    at Promise._settlePromise (D:\blog\node_modules\bluebird\js\release\promise.js:569:18)
    at Promise._settlePromise0 (D:\blog\node_modules\bluebird\js\release\promise.js:614:10)
    at Promise._settlePromises (D:\blog\node_modules\bluebird\js\release\promise.js:694:18)
    at _drainQueueStep (D:\blog\node_modules\bluebird\js\release\async.js:138:12)
    at _drainQueue (D:\blog\node_modules\bluebird\js\release\async.js:131:9)
    at Async._drainQueues (D:\blog\node_modules\bluebird\js\release\async.js:147:5)
    at Immediate.Async.drainQueues (D:\blog\node_modules\bluebird\js\release\async.js:17:14)
    at processImmediate (internal/timers.js:456:21)

删掉 \newcommand 然后手动替换就可以了？请问如何解决？

[Alpha1022]

解决了，貌似是 {# 的问题，加个空格就好了