i can haz font data

i can haz font data

ooo that's a finicky parser tho

Early days.  It's all good.

(But damn those Rust tracebacks, what a useless pile of text.  i know
the problem is in the parser!?  why is it showing me all the rust
internal crap and none of the actual stack trace of the ncc code?  I
mean, look at this thing:

    sforman@bock:~/src/Joypy/implementations/uvm-ncc % setenv RUST_BACKTRACE full
    sforman@bock:~/src/Joypy/implementations/uvm-ncc % gmake
    cd /home/sforman/src/uvm/ncc ; cargo run /home/sforman/src/Joypy/implementations/uvm-ncc/xerblin.c
        Finished dev [unoptimized + debuginfo] target(s) in 0.01s
         Running `target/debug/ncc /home/sforman/src/Joypy/implementations/uvm-ncc/xerblin.c`
    thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: ParseError { msg: "expected identifier", line_no: 139, col_no: 20 }', src/main.rs:98:43
    stack backtrace:
       0:          0x10d741f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h919bef3d5abebde9
       1:          0x10ee08e - core::fmt::write::h6413343c5226105f
       2:          0x10bce85 - std::io::Write::write_fmt::had0ddcb25461208f
       3:          0x10d71d5 - std::sys_common::backtrace::print::h5ed9962f90e9b258
       4:          0x10c6eff - std::panicking::default_hook::{{closure}}::h3978a8a8f5c1f893
       5:          0x10c6b91 - std::panicking::default_hook::h0cdbdd5201407347
       6:          0x10c75bb - std::panicking::rust_panic_with_hook::h15bc8b6da20c2af3
       7:          0x10d7777 - std::panicking::begin_panic_handler::{{closure}}::h082a693f9436206b
       8:          0x10d756c - std::sys_common::backtrace::__rust_end_short_backtrace::h56343aa2331ff455
       9:          0x10c7142 - rust_begin_unwind
      10:          0x10ed3d3 - core::panicking::panic_fmt::hf18d1d226927e137
      11:          0x10efa93 - core::result::unwrap_failed::ha5725a0b4539229c
      12:          0x105b505 - core::result::Result<T,E>::unwrap::h0f336a18a308049e
                                   at /wrkdirs/usr/ports/lang/rust/work/rustc-1.66.0-src/library/core/src/result.rs:1113:23
      13:          0x1068314 - ncc::main::h189929cbc5450262
                                   at /usr/home/sforman/src/uvm/ncc/src/main.rs:98:20
      14:          0x10611cb - core::ops::function::FnOnce::call_once::h8146a3c8fa28ca14
                                   at /wrkdirs/usr/ports/lang/rust/work/rustc-1.66.0-src/library/core/src/ops/function.rs:251:5
      15:          0x106e13e - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e9f285841c55b79
                                   at /wrkdirs/usr/ports/lang/rust/work/rustc-1.66.0-src/library/std/src/sys_common/backtrace.rs:121:18
      16:          0x1069fa1 - std::rt::lang_start::{{closure}}::h8ca60a785648e691
                                   at /wrkdirs/usr/ports/lang/rust/work/rustc-1.66.0-src/library/std/src/rt.rs:166:18
      17:          0x10c1514 - std::rt::lang_start_internal::hadf3843363799440
      18:          0x1069f7a - std::rt::lang_start::h3ee6ffb894d9f1d3
                                   at /wrkdirs/usr/ports/lang/rust/work/rustc-1.66.0-src/library/std/src/rt.rs:165:17
      19:          0x10684ee - main
      20:          0x104f472 - _start
                                   at /usr/src/lib/csu/amd64/crt1.c:76:7
    gmake: *** [GNUmakefile:11: /home/sforman/src/uvm/ncc/out.asm] Error 101

There's ONE LINE from the ncc source: uvm/ncc/src/main.rs:98:20 which is a call
to parse_unit, but it's the following unwrap that seems to be causing the error
message?