Re: Bad substitution breaks conditional statement

[Lawrence Velázquez]

> On Oct 13, 2020, at 4:42 PM, Martin Schulte <gnu@schrader-schulte.de> wrote:
> 
> Hi Chet, hi all!
> 
>> In general, variable expansion errors cause posix-mode shells to exit and
>> bash default mode shells to abort execution of the current command and
>> return to the top level, whether that is the command line or the next
>> command in the script. This aborts lists and other compound commands.
>> Bash has always behaved this way.
>> 
>> However, invalid parameter transformation operators are not considered
>> fatal errors, even in posix mode. Maybe they should be.
> 
> Yes, please :-)
> 
> Or no error at all.

Why should invalid parameter transformation operators be treated
differently from other invalid parameter expansions?

vq