[bug #44714] compatibility mode: .do request and macro expansion via \* collide

[G. Branden Robinson]

Follow-up Comment #1, bug #44714 (project groff):


[comment #0 original submission:]
> Consider the following snippet.
> 
> 
> .de1 aa
> .  tm compatibility mode = '\\n(.C'
> ..
> .
> .cp 1
> .
> .do tm
> \*(aa\
> 
> 
> The expected output is
> 
> 
> compatibility mode = '0'
> 
> 
> since macro `.aa` is defined with `.de1`.  However, due to a bug in troff
you get
> 
> 
> compatibility mode = '1'
> 
> 
> instead.

I don't understand why '.do tm' is going to the next input line to collect
arguments.  'tm' is not documented in CSTR #54 as behaving this way.

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