I use pdb with gud to debug python scripts. I am just wondering if there is way to highlight the lines with breakpoints? For example, in some screenshots of gud-gdb, some people seem to have red circles to the left of lines with breakpoints. How to achieve that with pdb? And is there a way to list all breakpoints (like the breakpoints buffer of gud-gdb)?
I actually tried realgud once, and it did have this feature. However, realgud is lacking documentation, and I find it extremely confusing to use. I have very limited knowledge of elisp, so I cannot figure out what is going on without a more detailed guide.
By the way, why gud with pdb does not have the function gud-until?