Re: 23.1.50; gdb mode screwup when setting breakpoint

[Dmitry Dzhus]

Miles Bader wrote:

> error in process filter: gdb-table-string: Symbol's function definition is 
> void: mapcar*

Yup, sorry about this. I've (finally) fixed this in trunk, so the code
doesn't use mapcar* anymore.

This function was utilized by small code which aligns text in columns.

I decided just to write a replacement for mapcar* which I think mimics
its notorious parent pretty closely, at least in my case.

Perhaps someone may have some comments about it:

    (defun gdb-mapcar* (function &rest seqs)
      "Apply FUNCTION to each element of SEQS, and make a list of the results.
    If there are several SEQS, FUNCTION is called with that many
    arugments, and mapping stops as sson as the shortest list runs
    out."
      (let ((shortest (apply #'min (mapcar #'length seqs))))
        (mapcar (lambda (i)
                  (apply function
                         (mapcar
                          (lambda (seq)
                            (nth i seq))
                          seqs)))
                (number-sequence 0 (1- shortest)))))

(docstring is just copied from cl's mapcar*).

I've grepped through other packages and discovered that there's a
gnus-mapcar macro (so big!) which seems to be a replacement for mapcar*
as well. I was thinking about defaliasing it and using for my code, but
fixme comment about gnus-mapcar in gnus-util.el says that

    ;; Fixme: This has only one use (in gnus-agent), which isn't worthwhile.

I'm not sure about its meaning, but probably it's safer to use a
homebrewn version in `gdb-mi.el`. Also having a debugger interface
depend on gnus-util package sounds weird.
-- 
Happy Hacking.

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