Starting lilypond 2.21.0 [location.ly]...
Processing `/home/mn/src/lp/test/location.ly'
Parsing...
#<location /home/mn/src/lp/test/location.ly:9:2>
#<location /home/mn/src/lp/test/location.ly:7:1>
Success: compilation successfully completed
Completed successfully in 0.7".

Starting lilypond 2.21.0 [location.ly]...
Processing `/home/mn/src/lp/test/location.ly'
Parsing...
#<location  (position unknown)>
#<location /home/mn/src/lp/test/location.ly:7:1>
Success: compilation successfully completed
Completed successfully in 0.8".

Starting lilypond 2.21.1 [location.ly]...
Processing `/home/mn/src/lp/test/location.ly'
Parsing...
#<location /home/mn/src/lp/test/location.ly:9:2>
#<location /home/mn/src/lp/test/location.ly:7:1>
Success: compilation successfully completed
Completed successfully in 0.7".