一个InProceedings编译后不显示`[C]`

[CSGrandeur]

编译环境

宏包版本：gbt7714 v1.0.9 标注样式：numbers,2005 目录下只放了gbt7714-2005-unsrt.bst和gbt7714.sty，并在自己的cls文件中

\RequirePackage[numbers,2005]{gbt7714}

环境：TexLive2017，XeLaTeX编译

描述问题

一个InProceedings编译后不显示[C]

bib 数据库代码：

@InProceedings{Gu2014Weighted,
  author    = {Gu, Shuhang and Zhang, Lei and Zuo, Wangmeng and Feng, Xiangchu},
  title     = {Weighted Nuclear Norm Minimization with Application to Image Denoising},
  booktitle = {Proceedings of the 2014 IEEE Conference on Computer Vision and Pattern Recognition},
  year      = {2014},
  series    = {CVPR '14},
  publisher = {IEEE Computer Society},
  isbn      = {978-1-4799-5118-5},
  pages     = {2862--2869},
  doi       = {10.1109/CVPR.2014.366},
  url       = {https://doi.org/10.1109/CVPR.2014.366},
  acmid     = {2680015},
  address   = {Washington, DC, USA},
  numpages  = {8},
}

代码来自：https://dl.acm.org/citation.cfm?id=2680015

截图：

[zepinglee]

初步测试是 series = {CVPR '14}, 这一行导致的，应该是 bst 的 bug

[zepinglee]

Fixed in 2276bdd .