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14e192e5ba
This is similar to the --ftrace (c function call trace) flag, except
it's less noisy since it only logs system calls to stderr. Having this
flag is valuable because (1) system call tracing tells us a lot about
the behavior of complex programs and (2) it's usually very hard to get
system call tracing on various operating systems, e.g. strace, ktrace,
dtruss, truss, nttrace, etc. Especially on Apple platforms where even
with the special boot trick, debuggers still aren't guaranteed to work.
make -j8 o//examples
o//examples/hello.com --strace
This is enabled by default in MODE=, MODE=opt, and MODE=dbg. In MODE=dbg
extra information will be printed.
make -j8 MODE=dbg o/dbg/examples
o/dbg/examples/hello.com --strace |& less
This change also changes:
- Rename IsText() → _istext()
- Rename IsUtf8() → _isutf8()
- Fix madvise() on Windows NT
- Fix empty string case of inet_ntop()
- vfork() wrapper now saves and restores errno
- Update xsigaction() to yoink syscall support
37 lines
1.4 KiB
Text
37 lines
1.4 KiB
Text
Lu = Letter, uppercase
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Ll = Letter, lowercase
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Lt = Letter, titlecase
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Lm = Letter, modifier
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Lo = Letter, other
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Mn = Mark, nonspacing
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Mc = Mark, spacing combining
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Me = Mark, enclosing
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Nd = Number, decimal digit
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Nl = Number, letter
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No = Number, other
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Pc = Punctuation, connector
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Pd = Punctuation, dash
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Ps = Punctuation, open
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Pe = Punctuation, close
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Pi = Punctuation, initial quote (may behave like Ps or Pe depending on usage)
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Pf = Punctuation, final quote (may behave like Ps or Pe depending on usage)
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Po = Punctuation, other
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Sm = Symbol, math
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Sc = Symbol, currency
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Sk = Symbol, modifier
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So = Symbol, other
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Zs = Separator, space
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Zl = Separator, line
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Zp = Separator, paragraph
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Cc = Other, control
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Cf = Other, format
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Cs = Other, surrogate
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Co = Other, private use
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Cn = Other, not assigned (including noncharacters)
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W Wide Naturally wide character, e.g. Hiragana.
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Na Narrow Naturally narrow character, e.g. ISO Basic Latin alphabet.
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F Fullwidth Wide variant with compatibility normalisation to naturally narrow character, e.g. fullwidth Latin script.
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H Halfwidth Narrow variant with compatibility normalisation to naturally wide character, e.g. half-width kana. Includes U+20A9 (₩) as an exception.
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A Ambiguous Characters included in East Asian DBCS codes but also in European SBCS codes, e.g. Greek alphabet. Duospaced behaviour can consequently vary.
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N Neutral Characters which do not appear in East Asian DBCS codes, e.g. Devanagari.
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