From a12d76afdb51e0de3adf5fdaef63e5f20077ff97 Mon Sep 17 00:00:00 2001
From: Callum Barker <64287849+cbarkr@users.noreply.github.com>
Date: Thu, 13 Jun 2024 19:47:22 +0000
Subject: [PATCH] fix: fix explorer view gradient positioning on mobile (fixes #906) (#1206)

---
 quartz/plugins/transformers/ofm.ts |   51 +++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/quartz/plugins/transformers/ofm.ts b/quartz/plugins/transformers/ofm.ts
index 3b76f25..414d8f6 100644
--- a/quartz/plugins/transformers/ofm.ts
+++ b/quartz/plugins/transformers/ofm.ts
@@ -99,20 +99,32 @@
 
 export const arrowRegex = new RegExp(/(-{1,2}>|={1,2}>|<-{1,2}|<={1,2})/, "g")
 
-// !?                -> optional embedding
-// \[\[              -> open brace
-// ([^\[\]\|\#]+)    -> one or more non-special characters ([,],|, or #) (name)
-// (#[^\[\]\|\#]+)?  -> # then one or more non-special characters (heading link)
-// (\|[^\[\]\#]+)? -> \| then one or more non-special characters (alias)
+// !?                 -> optional embedding
+// \[\[               -> 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)
 export const wikilinkRegex = new RegExp(
   /!?\[\[([^\[\]\|\#\\]+)?(#+[^\[\]\|\#\\]+)?(\\?\|[^\[\]\#]+)?\]\]/,
   "g",
 )
+
+// ^\|([^\n])+\|\n(\|) -> matches the header row
+// ( ?:?-{3,}:? ?\|)+  -> matches the header row separator
+// (\|([^\n])+\|\n)+   -> matches the body rows
+export const tableRegex = new RegExp(
+  /^\|([^\n])+\|\n(\|)( ?:?-{3,}:? ?\|)+\n(\|([^\n])+\|\n?)+/,
+  "gm",
+)
+
+// matches any wikilink, only used for escaping wikilinks inside tables
+export const tableWikilinkRegex = new RegExp(/(!?\[\[[^\]]*?\]\])/, "g")
+
 const highlightRegex = new RegExp(/==([^=]+)==/, "g")
 const commentRegex = new RegExp(/%%[\s\S]*?%%/, "g")
 // from https://github.com/escwxyz/remark-obsidian-callout/blob/main/src/index.ts
-const calloutRegex = new RegExp(/^\[\!(\w+)\]([+-]?)/)
-const calloutLineRegex = new RegExp(/^> *\[\!\w+\][+-]?.*$/, "gm")
+const calloutRegex = new RegExp(/^\[\!(\w+)\|?(.+?)?\]([+-]?)/)
+const calloutLineRegex = new RegExp(/^> *\[\!\w+\|?.*?\][+-]?.*$/, "gm")
 // (?:^| )              -> non-capturing group, tag should start be separated by a space or be the start of the line
 // #(...)               -> capturing group, tag itself must start with #
 // (?:[-_\p{L}\d\p{Z}])+       -> non-capturing group, non-empty string of (Unicode-aware) alpha-numeric characters and symbols, hyphens and/or underscores
@@ -169,6 +181,21 @@
           src = src.toString()
         }
 
+        // replace all wikilinks inside a table first
+        src = src.replace(tableRegex, (value) => {
+          // escape all aliases and headers in wikilinks inside a table
+          return value.replace(tableWikilinkRegex, (value, ...capture) => {
+            const [raw]: (string | undefined)[] = capture
+            let escaped = raw ?? ""
+            escaped = escaped.replace("#", "\\#")
+            // escape pipe characters if they are not already escaped
+            escaped = escaped.replace(/((^|[^\\])(\\\\)*)\|/g, "$1\\|")
+
+            return escaped
+          })
+        })
+
+        // replace all other wikilinks
         src = src.replace(wikilinkRegex, (value, ...capture) => {
           const [rawFp, rawHeader, rawAlias]: (string | undefined)[] = capture
 
@@ -176,18 +203,13 @@
           const anchor = rawHeader?.trim().replace(/^#+/, "")
           const blockRef = Boolean(anchor?.startsWith("^")) ? "^" : ""
           const displayAnchor = anchor ? `#${blockRef}${slugAnchor(anchor)}` : ""
-          let displayAlias = rawAlias ?? rawHeader?.replace("#", "|") ?? ""
+          const displayAlias = rawAlias ?? rawHeader?.replace("#", "|") ?? ""
           const embedDisplay = value.startsWith("!") ? "!" : ""
 
           if (rawFp?.match(externalLinkRegex)) {
             return `${embedDisplay}[${displayAlias.replace(/^\|/, "")}](${rawFp})`
           }
 
-          //transform `[[note#^block_ref|^block_ref]]` to `[[note#^block_ref\|^block_ref]]`, display correctly in table.
-          if (displayAlias && displayAlias.startsWith("|")) {
-            displayAlias = `\\${displayAlias}`
-          }
-
           return `${embedDisplay}[[${fp}${displayAnchor}${displayAlias}]]`
         })
       }
@@ -405,7 +427,7 @@
 
               const match = firstLine.match(calloutRegex)
               if (match && match.input) {
-                const [calloutDirective, typeString, collapseChar] = match
+                const [calloutDirective, typeString, calloutMetaData, collapseChar] = match
                 const calloutType = canonicalizeCallout(typeString.toLowerCase())
                 const collapse = collapseChar === "+" || collapseChar === "-"
                 const defaultState = collapseChar === "-" ? "collapsed" : "expanded"
@@ -467,6 +489,7 @@
                     className: classNames.join(" "),
                     "data-callout": calloutType,
                     "data-callout-fold": collapse,
+                    "data-callout-metadata": calloutMetaData,
                   },
                 }
               }

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