Re: [Bug-ed] Different behavior GNU ed and oed

[Alexander Jones]

On Thursday, February 28, 2019 4:29:24 PM CST Bjoern Wibben wrote:
> Hi there,
> 
> I found a different behavior between ed and oed.
> 
> Have a look at the output below:
> 
> oed (https://github.com/ibara/oed <https://github.com/ibara/oed>):
> 
> ~$ oed
> 
> :a
> 
> this
> is
> a
> test
> tester
> .
> 
> :g/test/s/^/#/g
> :,n
> 
> 1       this
> 2       is
> 3       a
> 4       #test
> 5       #tester
> 
> :Q
> 
> GNU ed 1.14.2 and 1.15:
> 
> ~$ ged
> 
> :a
> 
> this
> is
> a
> test
> tester
> .
> 
> :g/test/s/^/#/g
> 
> ?
> 
> :H
> 
> infinite substitution loop
> 
> :Q
> 
> As you can see oed is doing the substitution while GNU ed is not.
> GNU ed will do the substitution if you skip the last g.
> 
> 
> Best regards,
> 
> Bjoern
> 
> ---
> Bjoern M. Wibben
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This is a problem with 's', not with 'g'. A command like '4s/^/#/g' also fails 
with the same error. It seems to be an issue with using '^' by itself, as 
something like '4s/^t/#t/g' works.

Alexander