fix(ofm): allow wikilink alias to be empty (#1984)

Emile Bangma

2025-05-19 fec0a62b74e45acfe28861ee6eddf493a2be5f74

 quartz/plugins/transformers/ofm.ts

@@ -113,9 +113,9 @@
// \[\[               -> open brace
// ([^\[\]\|\#]+)     -> one or more non-special characters ([,],|, or #) (name)
// (#[^\[\]\|\#]+)?   -> # then one or more non-special characters (heading link)
// (\\?\|[^\[\]\#]+)? -> optional escape \ then | then one or more non-special characters (alias)
// (\\?\|[^\[\]\#]+)? -> optional escape \ then | then zero or more non-special characters (alias)
export const wikilinkRegex = new RegExp(
  /!?\[\[([^\[\]\|\#\\]+)?(#+[^\[\]\|\#\\]+)?(\\?\|[^\[\]\#]+)?\]\]/g,
  /!?\[\[([^\[\]\|\#\\]+)?(#+[^\[\]\|\#\\]+)?(\\?\|[^\[\]\#]*)?\]\]/g,
)

// ^\|([^\n])+\|\n(\|) -> matches the header row
@@ -222,7 +222,7 @@
                let [rawFp, rawHeader, rawAlias] = capture
                const fp = rawFp?.trim() ?? ""
                const anchor = rawHeader?.trim() ?? ""
                const alias = rawAlias?.slice(1).trim() ?? ""
                const alias: string | undefined = rawAlias?.slice(1).trim()

                // embed cases
                if (value.startsWith("!")) {
@@ -464,6 +464,30 @@
                  })
                }

                // For the rest of the MD callout elements other than the title, wrap them with
                // two nested HTML <div>s (use some hacked mdhast component to achieve this) of
                // class `callout-content` and `callout-content-inner` respectively for
                // grid-based collapsible animation.
                if (calloutContent.length > 0) {
                  node.children = [
                    node.children[0],
                    {
                      data: { hProperties: { className: ["callout-content"] }, hName: "div" },
                      type: "blockquote",
                      children: [
                        {
                          data: {
                            hProperties: { className: ["callout-content-inner"] },
                            hName: "div",
                          },
                          type: "blockquote",
                          children: [...calloutContent],
                        },
                      ],
                    },
                  ]
                }

                // replace first line of blockquote with title and rest of the paragraph text
                node.children.splice(0, 1, ...blockquoteContent)

@@ -485,21 +509,6 @@
                    "data-callout-metadata": calloutMetaData,
                  },
                }

                // Add callout-content class to callout body if it has one.
                if (calloutContent.length > 0) {
                  const contentData: BlockContent | DefinitionContent = {
                    data: {
                      hProperties: {
                        className: "callout-content",
                      },
                      hName: "div",
                    },
                    type: "blockquote",
                    children: [...calloutContent],
                  }
                  node.children = [node.children[0], contentData]
                }
              }
            })
          }