用于创建新帖子的 Rmarkdown 插件不起作用

Question

今天我想为我的网站创建一个新帖子（使用 blogdown 构建），但新帖子插件似乎不起作用。 当我选择“新帖子”或运行时

blogdown:::new_post_addin()

我收到一个错误：

Error in FUN(X[[i]], ...) : subscript out of bounds
In addition: Warning messages:
1: In value[[3L]](cond) :
  Cannot parse the YAML metadata in 'content/photo.md': Scanner error: while scanning an alias at line 3, column 1 did not find expected alphabetic or numeric character at line 3, column 2

2: In value[[3L]](cond) :
  Cannot parse the YAML metadata in 'content/research.md': Scanner error: while scanning an alias at line 4, column 1 did not find expected alphabetic or numeric character at line 4, column 2

我不确定附加警告是关于什么的，但我想关注主要错误。以下是 traceback() 返回的详细信息：

> traceback()
10: lapply(meta, `[[`, i)
9: unlist(lapply(meta, `[[`, i))
8: blogdown:::collect_yaml()
7: eval(exprs[i], envir)
6: eval(exprs[i], envir)
5: sys.source(pkg_file("scripts", file), envir = new.env(parent = globalenv()), 
       keep.source = FALSE)
4: xfun::in_dir(site_root(), expr)
3: in_root(sys.source(pkg_file("scripts", file), envir = new.env(parent = globalenv()), 
       keep.source = FALSE))
2: source_addin("new_post.R")
1: blogdown:::new_post_addin()

有趣的是，当我运行这个命令时：

blogdown::new_post(title, ext = '.md')

它工作正常，我可以创建一个新帖子。我更新了 blogdown 和 hugo 但无济于事。有人可以帮我理解这个错误是什么吗？其他插件（如插入图片）工作正常。

根据要求，Githup 存储库为 https://github.com/msmielak/msmielak.github.io，dput() 输出如下：

>dput(blogdown:::scan_yaml())
list(`content/about.md` = "<img align=\"right\" src=\"/./about_files/rsz_screenshot_2020-12-28_une_home.png\" alt=\"\" width=\"100px\"/>\n\n**2014-**\nPhD candidate at the School of Environmental and Rural Sciences University of New England in Armidale, Australia.", 
    `content/code.md` = NULL, `content/contact.md` = NULL, `content/photo.md` = NULL, 
    `content/post/2021-03-29-extracting-date-and-time-from-photo-using-ocr-engine-tesseract/index.md` = list(
        title = "Extracting date and time from camera trap photos using R and tesseract", 
        author = "", date = "2021-03-29", slug = list(), categories = c("code", 
        "R"), tags = c("R", "code", "camera trap", "OCR"), description = "", 
        featured = "", featuredalt = "", featuredpath = "", linktitle = ""), 
    `content/research.md` = NULL, `content/technology.md` = NULL)

Warning messages:
1: In value[[3L]](cond) :
  Cannot parse the YAML metadata in 'content/code.md': Parser error: did not find expected <document start> at line 3, column 67
2: In value[[3L]](cond) :
  Cannot parse the YAML metadata in 'content/photo.md': Scanner error: while scanning an alias at line 3, column 1 did not find expected alphabetic or numeric character at line 3, column 2

3: In value[[3L]](cond) :
  Cannot parse the YAML metadata in 'content/research.md': Scanner error: while scanning an alias at line 4, column 1 did not find expected alphabetic or numeric character at line 4, column 2

Answer 1

content/about.md 文件的 YAML 元数据似乎无效。通常 YAML 元数据应采用以下形式：

---
tag1: value1
tag2: value2
---

---

更新：使用 blogdown (>= v1.2.4) 的开发版，该错误将不再出现。更重要的是，blogdown::check_site() 可以检测到这个问题并建议用户修复有问题的 YAML 元数据。

remotes::install_github('rstudio/blogdown')