From 7bd511c31cb5d923eecd4a47c34bb43c5ab1c2b3 Mon Sep 17 00:00:00 2001
From: Bryce Kwon <bryce@brycekwon.com>
Date: Sat, 7 Nov 2026 10:14:17 -1000
Subject: Run each standalone Lua version once

A plain lua is usually one of the versioned names again, as lua and
lua5.5 are here, so every 5.5 check ran twice, while names such as
lua54 and lua-5.4 were never looked for. A test now names the version
that ran, since "under lua" did not say which one it was.
---
 tests/extensions/lib.sh | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

(limited to 'tests/extensions/lib.sh')

diff --git a/tests/extensions/lib.sh b/tests/extensions/lib.sh
index 4ca7522..d490655 100644
--- a/tests/extensions/lib.sh
+++ b/tests/extensions/lib.sh
@@ -8,18 +8,40 @@
 EXTENSIONS_DIRECTORY=$(cd "$TEST_OUTPUT_DIRECTORY/../custom/extensions" && pwd)
 EXT_TEST_DIRECTORY=$(cd "$TEST_OUTPUT_DIRECTORY/extensions" && pwd)
 
+# Prints the version an interpreter reports, LuaJIT by its own name rather
+# than the 5.1 it is compatible with, or the name it was given when it does
+# not run.
+lua_version() {
+	"$1" -e 'io.write(jit and jit.version or _VERSION)' 2>/dev/null ||
+		printf '%s' "$1"
+}
+
 # The interpreters on the path whose version the extensions claim, 5.1 to
 # 5.5 with LuaJIT counting as 5.1, so no script is failed on a version it
-# never claimed to run on.
+# never claimed to run on. Systems spell a versioned name in one of three
+# ways, and a plain lua is usually one of those again, so each version runs
+# once, under the first name found for it.
 interpreters=
-for ext_lua_bin in luajit lua5.1 lua5.2 lua5.3 lua5.4 lua5.5 lua
+ext_lua_versions=
+for ext_lua_bin in luajit lua5.1 lua51 lua-5.1 lua5.2 lua52 lua-5.2 \
+	lua5.3 lua53 lua-5.3 lua5.4 lua54 lua-5.4 lua5.5 lua55 lua-5.5 lua
 do
 	command -v "$ext_lua_bin" >/dev/null 2>&1 || continue
-	case "$("$ext_lua_bin" -e 'io.write(_VERSION)' 2>/dev/null)" in
-	"Lua 5."[1-5])
-		interpreters="$interpreters $ext_lua_bin"
+	ext_lua_version=$(lua_version "$ext_lua_bin")
+	case "$ext_lua_version" in
+	"Lua 5."[1-5]|"LuaJIT 2."*)
+		;;
+	*)
+		continue
+		;;
+	esac
+	case "$ext_lua_versions" in
+	*"|$ext_lua_version|"*)
+		continue
 		;;
 	esac
+	ext_lua_versions="$ext_lua_versions|$ext_lua_version|"
+	interpreters="$interpreters $ext_lua_bin"
 done
 test -n "$interpreters" ||
 	say 'no standalone lua on the path, unit checks skipped'
-- 
cgit 2.12.1