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Using strlen in strndup will walk past the first
n bytes up to the terminator, which may not be
present. This is not what we want.
While we're here, do some cleanups.
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strndup is part of POSIX.1, so APE should provide it.
This patch adds it, so need to patch it out of fewer
programs going forward.
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Our ctype.h mistakenly ommitted isblank. Add it in.
While we're here, the make the 'isfoo()' functions
are broken: they're offsetting into the array, and
don't work with negative character values.
Sync the function bodies with the macros, and make
them produce correct results.
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We're missing type flags for:
hh: char
ll: vlong
z: size_t
t: ptrdiff_t
j: intmax_t
The lack of '%lld' was causing us to fail when parsing
timezone files. This brings us in line with the specifiers
in the C99 standard, section 7.19.6.2p11
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q
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For ape, we never enabled warnings in cflags.
Turning it on brings up a lot of warnings. Most are noise,
but a few caught unused variables and trunctaions of pointers.
to smaller integers (int, long).
A few warnings remain.
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including <string.h> should be enougth to make strdup()
available.
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writing /env in putenv() doesnt work. exec will create
new enviroment anyway. we have to modify environ array!
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