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* build: Move feature test macros to prelude.hTavian Barnes2024-08-281-1/+0
| | | | | | This replaces the explicit CPPFLAGS list in flags.mk with just `-include src/prelude.h`, shortening our compiler command lines and allowing them to be easily documented.
* prelude: Split bfs-specific utilities into new bfs.h headerTavian Barnes2024-08-281-0/+3
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* prelude: Rely more on __has_include()Tavian Barnes2024-08-281-3/+3
| | | | | Rather than a bunch of manual fallback macros, just provide a fallback definition that returns false.
* prelude: Define __SANITIZE_*__Tavian Barnes2024-08-281-3/+3
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* Update opengroup.org links to POSIX 2024Tavian Barnes2024-08-021-2/+2
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* bfstd: New xstrtoll() wrapperTavian Barnes2024-06-041-0/+29
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* Make ELOOP an error again, except for -xtype.3.3.1Tavian Barnes2024-06-031-1/+1
| | | | | | | | | | POSIX requires an error if (for example) -L encounters a symlink loop. The GNU find change was restricted to -xtype, so add a manual ELOOP test to eval_xtype() for compatibility. This reverts commit 470589cbd9ca3e73d8c01ac3a96cbc065179dcc5. Link: https://savannah.gnu.org/bugs/?19605
* bfstd: Treat ELOOP like ENOENTTavian Barnes2024-05-271-1/+1
| | | | | | | GNU findutils just made the same change, so looping symlinks will be considered broken rather than a hard error. Link: https://savannah.gnu.org/bugs/?51926
* bfstd: New helper for open(ctermid())Tavian Barnes2024-05-251-0/+10
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* Stop using %mTavian Barnes2024-05-201-0/+4
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* Work around https://github.com/llvm/llvm-project/issues/88163Tavian Barnes2024-05-161-0/+15
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* build: Add checks for strtofflags() and string_to_flags()Tavian Barnes2024-05-071-7/+9
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* printf: Refactor %y/%Y implementationTavian Barnes2024-04-241-34/+34
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* config: Check for strerror_[lr]()Tavian Barnes2024-04-191-22/+20
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* config: Check for pipe2()Tavian Barnes2024-04-191-1/+1
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* config: Check for confstr()Tavian Barnes2024-04-191-5/+5
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* config: Check for program_invocation_short_nameTavian Barnes2024-04-191-3/+3
| | | | | | This lets us pick it up on musl too, since there's no __MUSL__ macro. Link: https://wiki.musl-libc.org/faq#Q:-Why-is-there-no-%3Ccode%3E__MUSL__%3C/code%3E-macro?
* Rename config.h to prelude.hTavian Barnes2024-04-191-1/+1
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* bfstd: Escape ASCII tildesTavian Barnes2024-03-261-1/+1
| | | | | | | | The POSIX spec [1] lists some characters that may need to be escaped. Unfortunately, the document uses ˜ (U+02DC SMALL TILDE) instead of ~ (U+007E TILDE), and I copy-pasted from it. [1]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_02
* bfstd: Add an ASCII fast path to xstrwidth()Tavian Barnes2024-03-211-1/+10
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* bfstd: New asciilen() functionTavian Barnes2024-03-211-25/+43
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* bfstd: Check that wcwidth() is positiveTavian Barnes2024-03-201-2/+6
| | | | | wcwidth() returns -1 for non-printable characters, but terminals typically don't print anything for them, so treat them as 0.
* Re-run include-what-you-useTavian Barnes2024-03-111-3/+3
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* stat: Use errno_is_like(ENOSYS) for EPERM kludgeTavian Barnes2024-02-281-0/+4
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* bfstd: Don't shadow FreeBSD's fflags_tTavian Barnes2024-02-011-4/+4
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* ioq: Use the negative errno conventionTavian Barnes2024-01-131-0/+9
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* bfstd: New {error,errno}_is_like() functionsTavian Barnes2024-01-131-2/+21
| | | | | | | We used to have is_nonexistence_error() to consistently treat ENOENT and ENOTDIR the same. Recently, we started considering EFAULT the same as ENAMETOOLONG on DragonFly BSD to work around a kernel bug. Unify both of these behind a more generic interface.
* bfstd: Fix fflags type on OpenBSDTavian Barnes2024-01-021-2/+8
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* bfstd: New xwcwidth() wrapperTavian Barnes2023-12-161-1/+1
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* bfstd: Wrap is[w]{alpha,digit,...}()Tavian Barnes2023-12-091-31/+12
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* bfstd: Work around more instances of llvm/llvm-project#65532Tavian Barnes2023-11-231-14/+19
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* Initial support for Cosmopolitan LibcTavian Barnes2023-11-101-1/+1
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* bfstd: Expose rlim_cmp()Tavian Barnes2023-11-061-0/+33
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* bfstd: New xwaitpid() wrapperTavian Barnes2023-10-311-0/+9
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* Use {0} to initialize mbstate_t rather than memset()Tavian Barnes2023-10-271-10/+5
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* bfstd: Expose xmbrtowc() and use it in eval_status()Tavian Barnes2023-10-271-13/+13
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* bfstd: Only free the locale if we dup'd it successfullyTavian Barnes2023-10-261-3/+3
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* wordesc: Don't allow braces in bare wordsTavian Barnes2023-10-181-1/+1
| | | | Things like {a,b} should be quoted to avoid brace expansion.
* bfstd: Actually use the copied localeTavian Barnes2023-10-121-1/+1
| | | | This fixes a segfault in xstrerror() when using musl.
* bfstd: Add a thread-safe wrapper for strerror()Tavian Barnes2023-10-051-0/+43
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* thread: s/call_once/invoke_once/Tavian Barnes2023-10-031-1/+1
| | | | call_once() is a reserved identifier from C11.
* bfstd: Work around a FreeBSD-specific msan issueTavian Barnes2023-09-061-4/+23
| | | | Link: https://github.com/llvm/llvm-project/issues/65532
* bfstd: Skip a whole loop in dollar_quote() if possibleTavian Barnes2023-09-061-2/+1
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* bfstd: Fix printable_len() off-by-oneTavian Barnes2023-09-061-2/+2
| | | | | | | If xmbrtowc() fails, or if xiswprint() is false, then we shouldn't include that wide char in the printable length. Fixes: 19c96abe0a1ee56cf206fd5e87defb1fd3e0daa5
* bfstd: Fix an OOB string index in xmbrtowc()Tavian Barnes2023-09-061-6/+2
| | | | | | | | | | | | | | | | | | | | | | This bug could be reproduced with something like $ bfs -samefile $'\xFA\xFA' bfs: error: bfs: dstrnescat@src/dstring.c:252: wordesc() result truncated or worse, with -DNDEBUG, $ bfs -samefile $'.....................\xFA\xFA' bfs: error: bfs -samefile $'.....................\xFA\xFA\x00\x55\x53\x45\x52\x3D\x74\x61\x76\x69\x61\x6E\x61\x74\x6F\x72 bfs: error: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ bfs: error: No such file or directory. which prints the memory after the end of the string (in this case, the environment variable USER=tavianator). The bug was caused by the line `*i += len`, which was intended to be `*i = len`. But actually, the right behaviour seems to be `*i += 1`. Fixes: 19c96abe0a1ee56cf206fd5e87defb1fd3e0daa5
* bfstd: Don't label a declarationTavian Barnes2023-08-081-1/+1
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* bfstd: Check multiple chars at once for isascii()Tavian Barnes2023-08-071-3/+20
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* bfstd: Speed up wordesc() by caching isprint()/isspace()Tavian Barnes2023-08-071-2/+29
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* bfstd: Add an ASCII fast path to wordesc()Tavian Barnes2023-07-131-59/+100
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* bfstd: Support wordesc() without allocatingTavian Barnes2023-07-131-38/+54
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