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The kernel script scripts/kconfig/merge_config.sh uses cp -T.
(Also sort the options into alphabetical order while adding -T, so that
eyeball binary search actually works when trying to find an option! Oddly,
they all show in reverse order because there's a bug in the help text
generator, but that's a problem for another day...)
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This isn't in POSIX, but Debian and macOS' cal(1)s both do this, and
it's annoying to have to run date(1) separately.
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This is false on ILP32 targets with 64-bit time_t.
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bionic works around the fact that you can't use an O_PATH fd with
fgetxattr(2), but glibc doesn't.
Fixes https://github.com/landley/toybox/issues/158.
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Basic readelf(1) implementation, with output close enough to the binutils
version to be usable with scripts that expect the binutils version. This
started as an implementation of nm(1) until I realized that I almost always
want readelf instead, and that you actually have to do much of the work
needed for readelf just to implement nm. Arguably nm (being part of POSIX)
belongs in toybox while readelf doesn't. An argument could also be made that
neither really belongs in toybox, belonging in a separate set of development
tools (such as binutils or the LLVM binutils).
Doesn't support most of the architecture-specific stuff, most notably
relocations, but is aware of things like ARM exidx sections and the common
register state notes in core dumps for the "big four" architectures: arm,
arm64, x86, and x86-64.
Doesn't support symbol versions (but probably should).
Doesn't support section groups or the -t "section details" (which is a long
form of -S "section headers" that I've never seen used in practice and which
isn't part of -a). Doesn't support dumping unwind info or the hash table
bucket histograms.
Reuses the table of ELF architectures from file(1).
Not fuzzed, but successfully parses all the ELF files in my Ubuntu 18.04
system's lib directories. Attempts to exit with an error when presented with
an invalid ELF file rather than struggle on as binutils seems to.
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Odd (and un-toyboxy) that we advertise the locale-specific output
formats but not the ISO ones :-)
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This doesn't (yet) add shell builtin awareness to time, kill, or pwd,
just lets them run in the shell process.
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Clear the last byte of the allocated buffer.
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Add basic smoketest while we're at it.
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POSIX only mentions -i/stdin, but GNU patch -- and Larry Wall's patch 1.3,
found via https://en.wikipedia.org/wiki/Patch_(Unix) -- also support
supplying the name of the file to patch and the name of the patch file
as optional arguments.
The AOSP build makes use of this syntax to patch snakeyaml to remove
references to java.beans.* stuff.
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The Mac iconv_open(3) doesn't follow Unicode TR#22 rules for charset
alias matching that bionic and glibc do (and, strictly, POSIX doesn't
say you have to even though it's obviously a good idea), so we have
to say exactly "UTF-8" rather than "utf8".
Additionally, the 2006-era bash 3.2 on current versions of macOS
(because it was the last GPLv2 bash) seems to have bugs that cause
it to mangle UTF-8 input, so we can't reliably echo a UTF-8 sequence
into a file. Use \x in the tests to work around this.
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One is really "the command is too long for me to ever call it given
other constraints", so leave "argument too long" for the case where it's
actually an argument causing the issue.
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but the problem is some vertical sort arrangements are impossible, and that's
what it was testing for. For example, showing 29 entries in 9 columns with
horizontal sort requires 4 rows:
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
29 29 x x x x x x x
But with vertical sort that would be:
1 5 9 13 17 21 25 29 x
2 6 10 14 18 22 26 x x
3 7 11 15 19 23 27 x x
4 8 12 16 20 24 28 x x
It still doesn't fit in 3 rows (3x9=27) but with 4 rows the 7 leftover spaces
eats a whole column, so you _can't_ have 9 columns with vertical sort.
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in whitespace accounting, eliminate lastcol, same sort[next] in dt, don't
count trailing whitespace on last entry in row.
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glibc doesn't set errno when getpw* fails, so the perror_exit() looked
fine. bionic sets ENOENT and the trailing "No such file or directory"
looks silly, so switch to error_exit().
Additionally, the default format tests fail on Android because of
SELinux (but for a different reason than usual!). There's no id
--no-context flag, so use sed to just throw away any SELinux context.
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The previous patch broke -nG, so move the -G code back to showone()
which handles -n.
Add the missing tests for the various uses of -n.
Also refactor the code to avoid the need to test optflags directly.
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variable declarations go at the start of blocks, and remove specific
people's names from todo items (anybody can do any todo).
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Handle unknown groups (fixes #117).
Fix -G to show *all* groups, not just all supplementary groups.
Fix -Z output to not include "context=".
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Fall back to converting the "name" to an integer and calling getpwuid().
We need to update `username` for the later call to getgrouplist().
Also fix the separator printing logic to avoid a trailing ',' on `id 0`.
Switch to FLAG() and move some declarations down to where they can be
initialized, both for clarity.
Also add simple tests. Sadly, there's no always-present user that is in
multiple groups.
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When in modes `-C` and `-x` we need to remove the trailing whitespace
on each line. This is the behavior of other `ls` commands.
Other `ls` commands will print the last filename and then print a
newline. Prior to this patch we would print the last filename, followed
by two spaces, and then print a newline.
Previously, we would get to the end of the loop and print the padding.
I couldn't figure out a way to determine when the program had reached
the end of a line. So I piggybacked off of the newline code.
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slash
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the -0 "argument too long" issue.
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but --restrict checking should run on the path up to the last component
before unlinking so tar can't be tricked into deleting random files off
the system.
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Reason: unicolumns() does not print combining characters correctly
Combining characters follow the character which they modify.
https://www.cl.cam.ac.uk/~mgk25/unicode.html#comb
xterm renders cut test1.txt -C -1 now correctly
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And a few small cleanups while I was there.
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back when they haven't specified -s, add tests.
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checked relative to the current directory, not from where the symlink lives.
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(it returns a malloc), and doesn't match the object lifetime of getbasename()
(which always returns some or all of its argument string). The dirname() in
libc modifies its argument string, but that's what posix says to do:
https://pubs.opengroup.org/onlinepubs/9699919799.2008edition/functions/dirname.html
so I guess we can live with it.
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We need two spaces between filenames because that is the convention
followed by other implementations. More importantly, if we do not have
two spaces, certain Unicode file names cause filenames to run together.
In Unicode, combining characters come before the character they modify.
If a filename ends in a combining character, the combining character
attaches to the space that follows it, causing the space not to be
visible. Having a two-space gap stops the above issue from happening.
For context and a bit more information, see mailing list link below.
https://www.mail-archive.com/toybox@lists.landley.net/msg05986.html
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Inline array becomes garbage outside the if.
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