Chet, the sample was run in normal, not POSIX, mode. So it allows '1a' but disallows '1'. Pretty odd.
On 20.01.2019 23:55, Chet Ramey wrote:
> On 1/20/19 10:46 AM, Andrey Butirsky wrote:
>> `1' is not a valid identifier, still:
>> $ function 1 () { :; }
>> bash: `1': not a valid identifier
>>
>> So that is pretty messy..
> In posix mode, bash restricts function names to be valid shell identifiers,
> as the standard specifies.
>
