For increased compatibility with GNU units: support a -v option which
produces more verbose output when spitting out the answer.
GNU -v does additional work in the version, information, and check output which
we do not (yet?) replicate.
The units program is likely little used. It is even less likely that a script
will want the units program to print out its version number by passing -v.
GNU units uses -V for version and -v for verbosity.
Increase compatibility between these two versions (written by the same author)
by switching our flag as well.
Take this opportunity to remove bogus information about the version number and
just call it 'FreeBSD units'.
Discussed with: cperciva, rwatson
than linear relations. We can now convert degC to degF.
586 units, 56 prefixes
You have: 24 degC
You want: degF
75.2
You have: degC
You want: K
(-> x*1 +273.15)
(<- y*1 -273.15)
1) Fix a bug where the recursion on prefixes where if recusrion failed
then the next attempt started too far along the string.
2) Up some internal limits that we were about to hit off.
3) Change the constness and signedness of some things and complete missing
prototypes.
4) Remove the readerror function 'cos it could print out the wrong
wrong file name. Replace it with more useful error messages.
5) Use sizeof when passing buffers to fgets.
6) Warn about empty prefix definitions.
Reviewed by: iedowse
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
