try to fix tbcode (#14010)...
try to fix tbcode (#14010)
Instead of using the heuristic of where the function is defined we will
now try to count the number of line in the files where the function are
defined.
Unfortunately the way stackdata parses things, the time depends on the
size of the file as it does not do partial highlighting.
So if the functions we are using are defined before the threshold we
still go through the slow path.
Now we try to :
1) not look at the IPython stacks
2) for files we can, open and count the number of lines as a proxy (and
cache it).
3) if any of those _files_ are too long, go through fast code.
