From 9e1c42a992f1204420ac587e956584928445c911 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Mon, 27 Apr 2026 20:12:29 +0300
Subject: [PATCH] matrixfmt: fix trimming all-space entity string

---
 pkg/connector/matrixfmt/html.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/connector/matrixfmt/html.go b/pkg/connector/matrixfmt/html.go
index 95c535eb..be76ec4b 100644
--- a/pkg/connector/matrixfmt/html.go
+++ b/pkg/connector/matrixfmt/html.go
@@ -108,6 +108,10 @@ func (es *EntityString) TrimSpace() *EntityString {
 		}
 		break
 	}
+	if cutStart == len(es.String) {
+		DebugLog("  -> ALLSPACE\n")
+		return &EntityString{}
+	}
 	for cutEnd = len(es.String) - 1; cutEnd >= 0; cutEnd-- {
 		switch es.String[cutEnd] {
 		case '\t', '\n', '\v', '\f', '\r', ' ', 0x85, 0xA0: