From cb1b9806c30d37a25096d918e3e8bd261893c46d Mon Sep 17 00:00:00 2001
From: Arpad Ryszka <arpio@squareroundforest.org>
Date: Sat, 22 Nov 2025 17:10:39 +0100
Subject: [PATCH] don't use delimiters for top level choice items

---
 html.go          |  8 +++++++-
 html_test.go     | 20 ++++++++++++++++++++
 markdown.go      |  1 +
 markdown_test.go | 20 ++++++++++++++++++++
 runoff.go        |  1 +
 runoff_test.go   | 20 ++++++++++++++++++++
 teletype.go      |  1 +
 teletype_test.go | 20 ++++++++++++++++++++
 8 files changed, 90 insertions(+), 1 deletion(-)

diff --git a/html.go b/html.go
index dadd4a3..2beb9a7 100644
--- a/html.go
+++ b/html.go
@@ -153,7 +153,13 @@ func htmlSequence(s SyntaxItem) string {
 }
 
 func htmlChoice(s SyntaxItem) string {
-	ss := htmlSyntaxItems(s.choice)
+	items := make([]SyntaxItem, len(s.choice))
+	copy(items, s.choice)
+	for i := range items {
+		items[i].topLevel = s.topLevel
+	}
+
+	ss := htmlSyntaxItems(items)
 	if s.topLevel {
 		return strings.Join(ss, "\n")
 	}
diff --git a/html_test.go b/html_test.go
index eeb987e..590159b 100644
--- a/html_test.go
+++ b/html_test.go
@@ -1562,6 +1562,26 @@ lines.</p>
 			}
 		})
 
+		t.Run("top level choice with sequence item", func(t *testing.T) {
+			doc := textfmt.Doc(
+				textfmt.Syntax(
+					textfmt.Choice(
+						textfmt.Symbol("foo"),
+						textfmt.Sequence(textfmt.Symbol("bar"), textfmt.Symbol("baz")),
+					),
+				),
+			)
+
+			var b bytes.Buffer
+			if err := textfmt.HTMLFragment(&b, doc); err != nil {
+				t.Fatal(err)
+			}
+
+			if b.String() != "<pre>\nfoo\nbar baz\n</pre>\n" {
+				t.Fatal(b.String())
+			}
+		})
+
 		t.Run("choice", func(t *testing.T) {
 			doc := textfmt.Doc(
 				textfmt.Syntax(
diff --git a/markdown.go b/markdown.go
index 3b79d31..6087a73 100644
--- a/markdown.go
+++ b/markdown.go
@@ -293,6 +293,7 @@ func renderMDChoice(w io.Writer, s SyntaxItem) {
 		}
 
 		item.delimited = false
+		item.topLevel = s.topLevel
 		renderMDSyntaxItem(w, item)
 	}
 
diff --git a/markdown_test.go b/markdown_test.go
index c92ab77..fd3d305 100644
--- a/markdown_test.go
+++ b/markdown_test.go
@@ -1706,6 +1706,26 @@ textfmt supports the following entries:
 			}
 		})
 
+		t.Run("top level choice with sequence item", func(t *testing.T) {
+			doc := textfmt.Doc(
+				textfmt.Syntax(
+					textfmt.Choice(
+						textfmt.Symbol("foo"),
+						textfmt.Sequence(textfmt.Symbol("bar"), textfmt.Symbol("baz")),
+					),
+				),
+			)
+
+			var b bytes.Buffer
+			if err := textfmt.Markdown(&b, doc); err != nil {
+				t.Fatal(err)
+			}
+
+			if b.String() != "```\nfoo\nbar baz\n```\n" {
+				t.Fatal(b.String())
+			}
+		})
+
 		t.Run("choice", func(t *testing.T) {
 			doc := textfmt.Doc(
 				textfmt.Syntax(
diff --git a/runoff.go b/runoff.go
index 86aa4a0..e9ac7c8 100644
--- a/runoff.go
+++ b/runoff.go
@@ -456,6 +456,7 @@ func renderRoffChoice(w io.Writer, s SyntaxItem) {
 		}
 
 		item.delimited = false
+		item.topLevel = s.topLevel
 		renderRoffSyntaxItem(w, item)
 	}
 
diff --git a/runoff_test.go b/runoff_test.go
index 9ebf358..7da0f71 100644
--- a/runoff_test.go
+++ b/runoff_test.go
@@ -2637,6 +2637,26 @@ and silver birch\~\~\~\~ | their canopies creating\~ | and shadow on the
 			}
 		})
 
+		t.Run("top level choice with sequence item", func(t *testing.T) {
+			doc := textfmt.Doc(
+				textfmt.Syntax(
+					textfmt.Choice(
+						textfmt.Symbol("foo"),
+						textfmt.Sequence(textfmt.Symbol("bar"), textfmt.Symbol("baz")),
+					),
+				),
+			)
+
+			var b bytes.Buffer
+			if err := textfmt.Runoff(&b, doc); err != nil {
+				t.Fatal(err)
+			}
+
+			if b.String() != ".nf\nfoo\nbar baz\n.fi\n" {
+				t.Fatal(b.String())
+			}
+		})
+
 		t.Run("choice", func(t *testing.T) {
 			doc := textfmt.Doc(
 				textfmt.Syntax(
diff --git a/teletype.go b/teletype.go
index c177e5d..1d8a783 100644
--- a/teletype.go
+++ b/teletype.go
@@ -347,6 +347,7 @@ func renderTTYChoice(w io.Writer, s SyntaxItem) {
 		}
 
 		item.delimited = false
+		item.topLevel = s.topLevel
 		renderTTYSyntaxItem(w, item)
 	}
 
diff --git a/teletype_test.go b/teletype_test.go
index d8295b8..d3cf6f0 100644
--- a/teletype_test.go
+++ b/teletype_test.go
@@ -2276,6 +2276,26 @@ and silver birch     | their canopies creating  | and shadow on the
 			}
 		})
 
+		t.Run("top level choice with sequence item", func(t *testing.T) {
+			doc := textfmt.Doc(
+				textfmt.Syntax(
+					textfmt.Choice(
+						textfmt.Symbol("foo"),
+						textfmt.Sequence(textfmt.Symbol("bar"), textfmt.Symbol("baz")),
+					),
+				),
+			)
+
+			var b bytes.Buffer
+			if err := textfmt.Teletype(&b, doc); err != nil {
+				t.Fatal(err)
+			}
+
+			if b.String() != "foo\nbar baz\n" {
+				t.Fatal(b.String())
+			}
+		})
+
 		t.Run("choice", func(t *testing.T) {
 			doc := textfmt.Doc(
 				textfmt.Syntax(