From ac34921d3b4b41f332343edb8eed980c6cf66563 Mon Sep 17 00:00:00 2001
From: Alex-Wengg <hanweng9@gmail.com>
Date: Thu, 9 Jul 2026 15:04:23 -0400
Subject: [PATCH] feat(tn/en/word): align symbol names with NeMo symbol.tsv
 (+1)
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Add the missing symbol→word mappings from NeMo's whitelist/symbol.tsv
(§→section, ™→trademark, ®→registered trademark, ©→copyright, ^→circumflex,
|→vertical bar, °/º→degree, _→underscore, *→asterisk, ~→tilde) and correct
"=" to "equal sign". Split "§" interior so "§-" → "section-".

en TN punctuation_match_input 6->7. No regressions.
---
 src/lib.rs                |  2 +-
 src/tn/en/word.rs         | 14 ++++++++++++--
 tests/parity_baseline.tsv |  2 +-
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index f43e983..0eea6de 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1064,7 +1064,7 @@ fn is_split_punct(c: char) -> bool {
 fn is_interior_hard(c: char) -> bool {
     matches!(
         c,
-        '!' | '?' | '(' | ')' | '[' | ']' | '{' | '}' | '\'' | '\u{2013}'
+        '!' | '?' | '(' | ')' | '[' | ']' | '{' | '}' | '\'' | '\u{2013}' | '§'
     )
 }
 
diff --git a/src/tn/en/word.rs b/src/tn/en/word.rs
index ebda7bb..6604a25 100644
--- a/src/tn/en/word.rs
+++ b/src/tn/en/word.rs
@@ -10,7 +10,7 @@
 
 use super::spell_digits;
 
-/// Spoken name for a standalone symbol.
+/// Spoken name for a standalone symbol (NeMo whitelist/symbol.tsv).
 fn symbol_word(c: char) -> Option<&'static str> {
     Some(match c {
         '$' => "dollar",
@@ -23,8 +23,18 @@ fn symbol_word(c: char) -> Option<&'static str> {
         '/' => "slash",
         '&' => "and",
         '+' => "plus",
-        '=' => "equals",
+        '=' => "equal sign",
         '@' => "at",
+        '_' => "underscore",
+        '*' => "asterisk",
+        '~' => "tilde",
+        '^' => "circumflex",
+        '|' => "vertical bar",
+        '§' => "section",
+        '™' => "trademark",
+        '®' => "registered trademark",
+        '©' => "copyright",
+        '°' | 'º' => "degree",
         _ => return None,
     })
 }
diff --git a/tests/parity_baseline.tsv b/tests/parity_baseline.tsv
index 46ff06d..83bf0c0 100644
--- a/tests/parity_baseline.tsv
+++ b/tests/parity_baseline.tsv
@@ -59,7 +59,7 @@ en	tn	money	71	71
 en	tn	normalize_with_audio	40	58
 en	tn	ordinal	27	27
 en	tn	punctuation	43	63
-en	tn	punctuation_match_input	6	13
+en	tn	punctuation_match_input	7	13
 en	tn	range	20	20
 en	tn	roman	4	4
 en	tn	serial	29	32