According to the new benchmarks, this leads a 5% speed improvement when
reading small strings, and a 27% improvement when reading large strings.
* libguile/read.c (READER_STRING_BUFFER_SIZE): Change to 128; update
comment to mention codepoints.
(scm_read_string): Make `str' a list of strings, instead of a string.
Store characters read in buffer `c_str'. Cons to STR when C_STR is
full, and concatenate/reverse at the end.
* benchmark-suite/benchmarks/read.bm (small, large): New variables.
Set %DEFAULT-PORT-ENCODING to "UTF-8".
("read")["small strings", "large strings"]: New benchmarks.
* benchmark-suite/benchmarks/bytevectors.bm: Add "coding: latin1"
comment where Guile will find it.
* benchmark-suite/benchmarks/chars.bm: Ditto.
* benchmark-suite/benchmarks/srfi-13.bm: Ditto.
* benchmark-suite/benchmarks/read.bm ("read"): Divide numbers of
iterations by 10, so that the benchmarks complete within a few
minutes.
* benchmark-suite/lib.scm (benchmark): Use `run-benchmark' in macro
definition, not `,run-benchmark'.
* benchmark-suite/benchmarks/0-reference.bm,
benchmark-suite/benchmarks/continuations.bm,
benchmark-suite/benchmarks/if.bm,
benchmark-suite/benchmarks/logand.bm: Add define-module.
* benchmark-suite/results/neil-arudy: New file, containing benchmark
results from my computer.
