Recent versions of ESP-IDF have a bug in which the Backtrace: line is
malformed.
Old/Good: Backtrace: 0xN:0xM 0xN:0xM 0xN:0xM ...
New/Bad: Backtrace:0xN:0xM0xN:0xM 0xN:0xM ...
I issued https://github.com/espressif/esp-idf/pull/9138 against
ESP-IDF to fix the underlying problem, but it is unclear when or if
that PR will be accepted, especially since the monitor program in
ESP-IDF is immune to the problem.
By using a decoding technique similar to the one in ESP-IDF's monitor,
either backtrace format can be accepted.
Supersedes #687 , which does not quite work, in that it misses one of
the entries.
Mitch Bradley
6b942d9a45