broken out from compile-internal.
Don't change window height if it is the frame root window.
(compile-internal): Call it.
(compilation-goto-locus): Call it.
Use any visible frame already showing the compilation buffer.
Test only its nilness.
(compile-goto-error): Pass (consp ARGP) to compile-reinitialize-errors
instead of ARGP itself.
(next-error): Code broken out into two new functions; call them.
(compilation-next-error-locus): New function; bulk of code from next-error.
Silently skip errors whose source loci are markers in killed buffers.
(compilation-goto-locus): New function, final code from next-error.
Element lists can now contain a 4th elt giving subexpr for the column.
(next-error): Handle error records with column numbers.
(compilation-parse-errors): Parse column numbers when the alist elt
specifies it. Use string-to-int instead of read for numbers from buffer
text.
absolute file names culled from error msgs.
(compile-abbreviate-directory): Prepend comint-file-name-prefix (if boundp)
to DIR before other processing.
(compilation-forget-errors): Reset compilation-parsing-end to 1 here.
(compile-reinitialize-errors): Don't reset compilation-parsing-end after
calling compilation-forget-errors.
Comment out gratuitous switch-to-buffer call; what was the rationale for it?
Don't check compilation-parsing-end (removed local AT-START); instead
always append to compilation-old-error-list, it will be nil if at start.
If compilation-error-list is non-nil before calling the parser, restore its
previous value afterwards; it still indicates the current error position.
Subtract the length of the existing compilation-error-list from
FIND-AT-LEAST when calling the parser.
(compilation-parse-errors): Don't check LIMIT-SEARCH at end of loop.
Inside check it inside each case of the cond; in error case we must discard
the last new error before stopping (just as for FIND-AT-LEAST).
Use floating-point in buffer percentage calculation, to avoid integer
overflow.
FILE) if it's not a marker. The conversion to using a string containing an
expanded file name was never finished, and anyway it utterly broke
compilation-search-path and few other things.
(next-error): Expect them that way.
(compilation-parse-errors): Make them that way.
(compile-file-of-error): Function removed.
(compilation-error-filedata, compilation-error-filedata-file-name): New
defsubsts.
(compilation-next-file): Use them instead of compile-file-of-error.
