'typeset' and family accept invalid identifiers

• Relator: mcdutchie
• Dono: magicant
• Tipo: Bugs
• Estado: Aberto [Owner assigned]
• Componente: shell-main
• Marcos: (Nenhum)
• Prioridade: 5 - Medium
• Gravidade: 5 - Medium
• Resolução: Nenhum
• Arquivo: Nenhum

Details Responder

$ readonly a\ b=c
$ readonly a\ b=d
readonly: $a b is read-only
$ echo ${a b}
syntax error: invalid character ` ' in parameter expansion

If that is an invalid expansion, then 'readonly' should not have succeeded either.

$ export a\ b=c
$ env | grep ^a\ b=
a b=c

Allowing identifiers with spaces to be exported also does not seem like a good thing.

Ticket History (2/2 Histories)

2019-07-10 04:51 Updated by: mcdutchie

• New Ticket "'typeset' and family accept invalid identifiers" created

2019-07-11 00:52 Updated by: magicant

Comentário Responder

But GNU's env command supports space-including variable names and POSIX does not seem to disallow such behavior.

$ env 'a b=c' printenv 'a b'
c

I would rather think the shell should support parameter expansion with arbitrary names, if anything should be fixed.