Re: Serious bugs in figured bass in Lilypond 2.7.17

[liang seng]

Hi, I'm able to isolate the problems to a couple of bars. Here is what the 
double extender lines is supposed to look like:

\version "2.7.17"

\relative {
<< \context Voice {
\clef bass
c,8 c c c c c c c c c c c   }
\context FiguredBass \figuremode {  \set useBassFigureExtenders = ##t
\set figuredBassAlterationDirection = #1
\set figuredBassPlusDirection = #1
<6 4 >2.. <6 4 >8 } >> }

As you can see, the two extender lines come out normally, but when I add 
figures after that, only one extender line came out:

\version "2.7.17"
\relative {
<< \context Voice {
\clef bass
c,8 c c c c c c c c c c c   }
\context FiguredBass \figuremode {  \set useBassFigureExtenders = ##t
\set figuredBassAlterationDirection = #1
\set figuredBassPlusDirection = #1
<6 4 >2.. <6 4 >8 <6\! 2++>4. <6 2++>8 } >> }

The second bar also highlighted the vertical misalignment of 2 extender 
lines. This, of course is caused by the addition of an accidental to the 
right of the lower figure which caused the lower extender line to shift the 
width of the accidental to the right. If there is only a way that we can 
introduce a gap to the right of the upper figure so that the upper extender 
line is also shifted to the right, and therefore keeping the vertical 
alignment intact.
The 2nd bar also shows that the double sharp beside "2" is too small. How 
can I enlarge it?