问题描述
我正在使用Emacs 24.3.1.我安装了 MELPA 版本"rel =" noreferrer> plantuml-mode 通过
I am on Emacs 24.3.1. I installed the MELPA version of plantuml-mode via
package-install plantuml-mode .
当我尝试为缓冲区打开 plantuml-mode 时，出现以下错误:
When I try to turn on plantuml-mode for a buffer, I get the following error:
Wrong type argument: stringp, nil
尝试查找其他安装说明，我查看了 plantuml-mode.el 源代码中的注释"部分，但此处仅表示要 require 软件包，而我正在这样做.
Trying to find additional installation instructions I looked at the "Commentary" section in the plantuml-mode.el source, but there it only says to require the package, and I am doing that.
如何解决此问题?
推荐答案
经过进一步的挖掘，我找到了解决此问题的方法: plantuml-mode 将不会运行，除非变量plantuml-jar-path 设置为非 nil 值.在事后看来，这是相当明显的，但是由于没有被明确提及(至少在我找不到的任何地方)，它仍然很容易被理解.为了获得最佳结果，该变量应指向文件系统中 plantuml.jar 文件的位置.就我而言:
After a bit more digging I found the solution to this problem: plantuml-mode won't run unless the variable plantuml-jar-path is set to a non-nil value. Fairly obvious in hindsight, but still easy to get bit by since it isn't mentioned explicitly (at least not anywhere that I could find). For best results, the variable should point to the location of the plantuml.jar file in your file system. In my case:
(setq plantuml-jar-path "/opt/plantuml/plantuml.jar")
希望这可以在某些时候帮助别人.
Hope this helps someone else at some point.
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