2 files changed, 12 insertions, 0 deletions
diff --git a/src/fexpr/grammar.lalrpop b/src/fexpr/grammar.lalrpop
index 580fa1b..bca7691 100644
--- a/src/fexpr/grammar.lalrpop
+++ b/src/fexpr/grammar.lalrpop
@@ -68,6 +68,7 @@ LogPredicate: Box<dyn filters::log::LogFilter> = {
     "-fractal" => filters::log::game_mode([GameMode::Fractal].into()),
     "-strike" => filters::log::game_mode([GameMode::Strike].into()),
     "-wvw" => filters::log::game_mode([GameMode::WvW].into()),
+    "-gamemode" <Comma<GameMode>> => filters::log::game_mode(<>),
 
     "-include" => filters::constant(true),
     "-exclude" => filters::constant(false),
@@ -155,6 +156,15 @@ Encounter: Encounter = {
     }),
 }
 
+GameMode: GameMode = {
+    <l:@L> <w:word> =>? w.parse().map_err(|_| ParseError::User {
+        error: FError {
+            location: l,
+            kind: FErrorKind::GameMode,
+        }
+    }),
+}
+
 PlayerClass: PlayerClass = {
     <l:@L> <w:word> =>? w.parse().map_err(|_| ParseError::User {
         error: FError {
diff --git a/src/fexpr/mod.rs b/src/fexpr/mod.rs
index 0fe2acf..6eeb753 100644
--- a/src/fexpr/mod.rs
+++ b/src/fexpr/mod.rs
@@ -51,6 +51,8 @@ pub enum FErrorKind {
     Boss,
     #[error("invalid class name")]
     Class,
+    #[error("invalid game mode")]
+    GameMode,
 }
 
 /// Shortcut to create a new parser and parse the given input.