use tr to trim whitespace instead

fish_prompt.fish

@@ -777,11 +777,11 @@ function __bobthefish_prompt_rubies -S -d 'Display current Ruby information'
     else if type -q chruby # chruby is implemented as a function, so omitting the -f is intentional
         set ruby_version $RUBY_VERSION
     else if type -fq asdf
-        asdf current ruby 2>/dev/null | read -l asdf_ruby_version asdf_provenance
+        asdf current ruby 2>/dev/null | tr -s " " | read -l asdf_ruby_version asdf_provenance
         or return
 
         # If asdf changes their ruby version provenance format, update this to match
-        [ "$asdf_provenance" = "   (set by $HOME/.tool-versions)" ]
+        [ "$asdf_provenance" = "(set by $HOME/.tool-versions)" ]
         and return
 
         set ruby_version $asdf_ruby_version