Re: [PATCH] fast-import: add ignore non-existent files option.

"Shawn O. Pearce" [off-list ref] writes:

OK, that argument makes sense.  Then I wonder if more specific
error ignoring would be better:

  --ignore-error=already-deleted
  --ignore-error=already-deleted,missing-mark,missing-copy-source

I'm not really fond of turning an existing error condition that
exists to catch broken frontends into a generic tolerant flag.
But being able to selectively turn it off while leaving other
errors as errors isn't entirely unreasonable.

I think selective loosening of consistency check makes sense very much,
but I have been wondering if these should be command line options.

The only example we saw so far is about output from one exporter.  Perhaps
it should be given to fast-import as initial set of commands ("#pragma"!)
that describes the nature of the input file?