Re: What is the difference between GNU groff and Mac OS X groff

[Michail Vidiassov]

Dear All,

>>> What options are needed to make GNU groff behave the same as
>>> Mac OS X groff?

>> Do
>>   export GROFF_NO_SGR=yes
>> in the shell and then try your groff command again.

> OK. This works. Thanks.
> So, that is the change between 1.19.2 and 1.22.4?

It is not a change in groff itself, it is a result of an Apple patch
to default groff settings to "Disable SGR support in grotty(1)"

https://opensource.apple.com/source/groff/groff-41/patches/tmac__troffrc.diff.auto.html

Michail

PS.  Other Apple patches
https://opensource.apple.com/source/groff/groff-41/patches/
PPS. Let it be in the mail list archive for the record.