[Sbcl-devel] PATCH provide info more reliably when infinite error nesting happen

[Attila L. <att...@gm...>]

FYI, i've created a pull request on github:

https://github.com/sbcl/sbcl/pull/3

Added an EMERGENCY-BEST-EFFORT keyword argument to PRINT-BACKTRACE,
disabled by default. The debugger calls PRINT-BACKTRACE with the
flag on only when it gets nested, so that e.g. errors from printing
the backtrace also land in a (nested) debugger, but only when
coming from the first level of the debugger.

Make ERROR-ERROR try to print more info on the way down into
nesting and use this new keyword.

-- 
• attila lendvai
• PGP: 963F 5D5F 45C7 DFCD 0A39
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