[slime-devel] swank.lisp *sldb-printer-settings*

[Madhu]

This issue crops up, for example, when debugging huge strings (imagine
huge text files slurped into strings), and is caused by the
interactions of *PRINT-PRETTY* and *PRINT-LINES*: *PRINT-LINES* is in
effect only if *PRINT-PRETTY* is non-NIL

Currently swank.lisp defines

|(defvar *sldb-printer-bindings*
|  `((*print-pretty*           . NIL)
[...]
|    (*print-lines*            . 200)
|    (*print-escape*           . t))
|  "A set of printer variables used in the debugger.")

So effectively *PRINT-LINES* is not obeyed, and slime prints huge
strings (containing newlines) through emacs, causing much burden on
all systems.

I suggest changing the binding for *PRINT-PRETTY* in
*SLDB-PRINTER-BINDINGS* to T if nothing else depends on it.

--
Madhu