Re: [PATCH] gitk: fix the context menu not appearing in the presence of submodule diffs

> Currently, submodule diffs can cause the diff context menu to fail
> to appear because of a couple bugs in parseblobdiffline:
> 
> * it appends the submodule name to ctext_file_lines instead of
>   a line number, which breaks the binary search in find_ctext_fileinfo;
> 
> * it can desynchronize ctext_file_names and ctext_file_lines
>   by appending to the former but not the latter, which also breaks
>   find_ctext_fileinfo.
> 
> Fix both of these.
> 
> Note: a side effect of this patch is that the context menu also
> starts appearing when you right-click on submodule diffs (and not just
> regular diffs). The menu is non-functional in this case, though,
> since you can't run blame on submodules.
> 
> Signed-off-by: Роман Донченко <dpb@corrigendum.ru>