From 65d79295eceb8f8f63da9062b13bfb6dff5029c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B7=E7=94=B5=E8=8A=BD=E8=A1=A3?=
 <zhangyanghaha0407@outlook.com>
Date: Fri, 9 Oct 2026 06:38:35 -0400
Subject: [PATCH] ElyMark: short table rows compare padded, as GFM reads them
 (R2.13)

---
 apps/ely-mark/web/src/tables.js | 7 ++++++-
 tests/scripts/mark-session.sh   | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/apps/ely-mark/web/src/tables.js b/apps/ely-mark/web/src/tables.js
index 2693483..0563a67 100644
--- a/apps/ely-mark/web/src/tables.js
+++ b/apps/ely-mark/web/src/tables.js
@@ -22,7 +22,12 @@ export function canon(text) {
   let out = text
   // Later tables first, so earlier offsets hold.
   for (const table of tables.reverse()) {
-    const rows = table.children.map((row) => row.children.map((node) => cell(text, node)).join('|'))
+    const width = table.children[0].children.length
+    // GFM fills a short row with empty cells.
+    const rows = table.children.map((row) => {
+      const cells = row.children.map((node) => cell(text, node))
+      return [...cells, ...Array(Math.max(0, width - cells.length)).fill('')].join('|')
+    })
     const shape = [table.align.join(','), ...rows].join('\n')
     out = `${out.slice(0, table.position.start.offset)}\u0000${shape}\u0000${out.slice(table.position.end.offset)}`
   }
diff --git a/tests/scripts/mark-session.sh b/tests/scripts/mark-session.sh
index 0b03f59..f3d11ae 100755
--- a/tests/scripts/mark-session.sh
+++ b/tests/scripts/mark-session.sh
@@ -131,6 +131,7 @@ check quoted.md $'> |alpha|beta|\n> |---|---|\n> |1|2|\n' 'keystroke "x"' $'> |x
 check listed.md $'- item\n\n  |alpha|beta|\n  |---|---|\n  |1|2|\n' 'keystroke "x"' $'- xitem\n\n  |alpha|beta|\n  |-|-|\n  |1|2|\n'
 # Items open with a paragraph; a leading table stays raw.
 check leading.md $'- |alpha|beta|\n  |---|---|\n' 'keystroke "x"' $'x- |alpha|beta|\n  |---|---|\n'
+check short.md $'|a|b|c|\n|-|-|-|\n|1|2|\n' 'keystroke "x"' $'|xa|b|c|\n|-|-|-|\n|1|2||\n'
 # Cells Milkdown would rewrite keep the table raw.
 check wikicell.md $'|a|[[Wiki Link]]|\n|-|-|\n|1|2|\n' 'keystroke "x"' $'x|a|[[Wiki Link]]|\n|-|-|\n|1|2|\n'
 # Deleting forward at a hidden definition moves nothing.