Jambunathan K <kjambunathan@gmail.com> writes:

> Stefan Monnier <monnier@iro.umontreal.ca> writes:
>
>>> 2. M-x debbugs-gnu
>>>    There is no way I can C-s C-j to the second or third candidates.
>>>    I normally use debbbugs-gnu-search which is the second candidate.
>>
>> Better ask this elsewhere, I'm not up to speed on debbugs-gnu.
>
> I am attaching screenshot of minibuffer. 
>
>     1. M-x debbugs-gnu
>     2. Immediately cycle with C-s
>
> Cycling may happen internally but the UI presents the "most-is-exact"
> always at the head.  This is a definite bug.

The case to be handled is "Complete, but not unique".  

The attached patch fixes the issue by sneaking a Ctrl-M in to the try
try completion field.

Attachments: 
M-x debbugs-gnu RET with icomplete-mode on.

icomplete-1.png:  
        Note the ^M and the empty first entry

icomplete-2.png:  
        After a C-s.  Note the ^M indicator and empty entry pushed to
        the last.

icomplete-3.png:
        This is the second invocation of M-x debbugs-gnu RET.  Note that
        the entry from the recent history is at the head.  Also note ^M
        and the empty entries.