fix fish completions with words containing -f

Author: azarmadr

src/completions.rs

@@ -94,10 +94,10 @@ export extern "just" [
 ]"#;
 
 const FISH_RECIPE_COMPLETIONS: &str = r#"function __fish_just_complete_recipes
-        if string match -rq '(-f|--justfile)\s*=?(?<justfile>[^\s]+)' -- (string split -- ' -- ' (commandline -pc))[1]
-          set -fx JUST_JUSTFILE "$justfile"
-        end
-        printf "%s\n" (string split " " (just --summary))
+    if string match -rq '\s(-f|--justfile)\s*=?(?<justfile>[^\s]+)' -- (string split -- ' -- ' (commandline -pc))[1]
+        set -fx JUST_JUSTFILE "$justfile"
+    end
+    printf "%s\n" (string split " " (just --summary))
 end
 
 # don't suggest files right off