Move gh check to the Haskell binary

app/Main.hs

@@ -19,10 +19,18 @@ main = do
         PackagistCommand packagistArguments ->
             latestPackagist packagistArguments
         TextCommand textArguments -> latestText textArguments
-        GhCommand ghArguments -> latestGitHub settings ghArguments (stripPrefix "v")
+        GhCommand ghArguments@GhArguments{ transform } ->
+            latestGitHub settings ghArguments $ chooseTransformFunction transform
 
     Text.IO.putStrLn $ fromMaybe "" latestVersion
   where
+    chooseTransformFunction (Just "php") = phpTransform
+    chooseTransformFunction (Just "rdiff-backup") = Text.stripPrefix "v"
+    chooseTransformFunction _ = stripPrefix "v"
     stripPrefix prefix string = Just
         $ fromMaybe string
         $ Text.stripPrefix prefix string
+    phpTransform version
+        | (majorPrefix, patchVersion) <- Text.breakOnEnd "." version
+        , majorPrefix == "php-8.2." = Just $ Text.drop (Text.length "php-") version
+        | otherwise = Nothing

app/SlackBuilder/CommandLine.hs

@@ -16,7 +16,7 @@ import Options.Applicative
     , info
     , fullDesc
     , subparser
-    , command
+    , command, optional
     )
 
 data SlackBuilderCommand
@@ -32,6 +32,7 @@ data PackagistArguments = PackagistArguments
 data GhArguments = GhArguments
     { owner :: Text
     , name :: Text
+    , transform :: Maybe Text
     } deriving (Eq, Show)
 
 newtype TextArguments = TextArguments Text
@@ -48,6 +49,7 @@ ghArguments :: Parser GhArguments
 ghArguments = GhArguments
     <$> argument str (metavar "OWNER")
     <*> argument str (metavar "NAME")
+    <*> optional (argument str (metavar "TRANSFORM"))
 
 slackBuilderParser :: ParserInfo SlackBuilderCommand
 slackBuilderParser = info slackBuilderCommand fullDesc