From c4fe39376cba7a27388b7c9b2cce1e8b0bb3baa4 Mon Sep 17 00:00:00 2001
From: Dane Strandboge <136023093+DStrand1@users.noreply.github.com>
Date: Mon, 24 Feb 2025 08:51:00 -0600
Subject: [PATCH] fix(internal): Fix plural acronyms in SnakeCase function
 (#16530)

---
 internal/internal.go      | 11 +++++++++--
 internal/internal_test.go |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/internal/internal.go b/internal/internal.go
index 9344593b2..aa50ddaad 100644
--- a/internal/internal.go
+++ b/internal/internal.go
@@ -112,8 +112,15 @@ func SnakeCase(in string) string {
 
 	var out []rune
 	for i := 0; i < length; i++ {
-		if i > 0 && unicode.IsUpper(runes[i]) && ((i+1 < length && unicode.IsLower(runes[i+1])) || unicode.IsLower(runes[i-1])) {
-			out = append(out, '_')
+		if i > 0 && unicode.IsUpper(runes[i]) {
+			prevLower := unicode.IsLower(runes[i-1])
+			nextLower := i+1 < length && unicode.IsLower(runes[i+1])
+			// Special case for plural acronyms
+			nextPlural := i+1 < length && runes[i+1] == 's'
+
+			if prevLower || (nextLower && !nextPlural) {
+				out = append(out, '_')
+			}
 		}
 		out = append(out, unicode.ToLower(runes[i]))
 	}
diff --git a/internal/internal_test.go b/internal/internal_test.go
index f75f9b010..9834f66ea 100644
--- a/internal/internal_test.go
+++ b/internal/internal_test.go
@@ -34,6 +34,7 @@ var tests = []SnakeTest{
 	{"LinuxMOTD", "linux_motd"},
 	{"OMGWTFBBQ", "omgwtfbbq"},
 	{"omg_wtf_bbq", "omg_wtf_bbq"},
+	{"ConsumedLCUs", "consumed_lcus"},
 }
 
 func TestSnakeCase(t *testing.T) {