only try regex if word doesn't start with -

Since our predicates start with -, this sounds like a good heuristic to
prevent something like "raidgrep -- -player" from silently succeeding
but not doing what the user had intended. In this case, we want the
parse error to show and not treat "-player" as a regex.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index 66b2880..3164bd4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -262,7 +262,7 @@ fn single(opt: &Opt) -> Result<()> {
     if opt.expression.len() == 1 {
         let line = &opt.expression[0];
         let maybe_filter = build_filter(line);
-        if maybe_filter.is_err() {
+        if maybe_filter.is_err() && !line.starts_with('-') {
             let maybe_regex = Regex::new(line);
             if let Ok(rgx) = maybe_regex {
                 let filter = filters::player::any(