suggestion regarding the error message when using alr with: "underscores" are also allowed

[kwolcott]

suggestion regarding the error message when using alr with: "underscores" are also allowed

alr --no-color with gnatcoll-gmp
ERROR: Invalid name 'gnatcoll-gmp': Identifiers must be lowercase ASCII alphanumerical. You can see the complete identifier naming rules with 'alr help identifiers'
hamming: alr help

The following works:
hamming: alr --no-color with gnatcoll_gmp

[Fabien-Chouteau]

Indeed we can have a special handling for - because people are likely to use it.