Hi Michael,

I… took some time trying to find out the revision which breaks the debugging 
facility. After many rounds of binary searching, I found that, until the 
following revision

        e5fc0f365922cfd11ec32c4531983d20892777a6 (Improving naming of 
bit-vector signed division constants…) on Sep 11, 2017

the debugging facility still works, then after the next revision it’s broken:

        69125acadde5cf629e4b9d5604bc33b226c57b5d (Merge branch 
'heaps-reworked’) on Sep 13, 2017

many revisions after e5fc0f36 is not buildable under Poly/ML 5.7 (until 
c52815a4 “Comment out optional(?) code that doesn't work/exist under poly5.7…”) 
so I used Poly/ML 5.6 to confirm above broken revisions.

I’ll try to dig into your branch 'heaps-reworked’ to further find out the exact 
changes related to the breaks of debugging facility.

Could you please make some efforts to fix this issue? I think HOL should be 
considered as a normal Poly/ML with theorem proving built in, and in theory HOL 
executions can be used for developing any SML-based applications, and the the 
debugging facility is very important for large complex applications.

Regards,

Chun

> Il giorno 26 apr 2018, alle ore 01:22, michael.norr...@data61.csiro.au ha 
> scritto:
> 
> The REPL (allows great interactive unit-testing) and annotation with print 
> statements.
> 
> Michael
> 
> On 25/4/18, 03:36, "Mario Xerxes Castelán Castro" <marioxcc...@yandex.com> 
> wrote:
> 
>    What do you use for debugging, or instead of debugging?
> 
>    On 19/04/18 23:02, michael.norr...@data61.csiro.au wrote:
>> I've never used the Poly/ML debugger. The HOL4 REPL is a custom piece of 
>> code (handling the lexing of “...” forms, for example), so I guess this 
>> interferes with what the debugger wants to do.  If you wanted to use the 
>> debugger, you might be able to get things to work by manually use-ing the 
>> HOL SML sources into the standard poly REPL.
>    --
>    Do not eat animals; respect them as you respect people.
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> 
> 
> 
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