src/usr.bin/printf/printf.c, branch upstream/10.1.0

MFC r264581, r264744:

2014-04-30T20:39:08Z

Various style(9) fixes and typos in printf, grep, sort and patch. #define should be followed by a tab.

POSIX requires that non-existent or null arguments be treated as if a

2012-12-18T21:02:38Z

zero argument were supplied. Add a regression test to catch this case as well. PR: bin/174521 Submitted by: Daniel Shahaf (pr) Submitted by: Mark Johnston (initial patch) Reviewed by: jilles Approved by: cperciva (implicit) MFC after: 3 weeks

sh: Prefer internal nextopt() to libc getopt().

2012-09-15T21:56:30Z

This reduces code duplication and code size. /usr/bin/printf is not affected. Side effect: different error messages when certain builtins are passed invalid options.

Style cleanups for printf.

2012-01-12T20:30:20Z

PR: bin/152934 Approved by: jhb (mentor) Obtained from: Illumos MFC after: 2 weeks

printf: Allow multibyte characters for ' form, avoid negative codes.

2011-05-28T11:37:47Z

Examples: LC_ALL=en_US.UTF-8 printf '%d\n' $(printf \'\\303\\244) LC_ALL=en_US.ISO8859-1 printf '%d\n' $(printf \'\\344) Both of these should print 228. Like some other shells, incomplete or invalid multibyte characters yield the value of the first byte without a warning. Note that there is no general way to go back from the character code to the character.

printf: Note that this is used both as a normal program and a shell builtin.

2011-03-01T21:47:06Z

printf: Do not use sh memory functions in sh builtin.

2010-12-29T21:38:00Z

These functions throw exceptions if they fail, possibly causing memory leaks. The normal out-of-memory handling suffices. The INTOFF around almost all of printf prevents memory leaks due to SIGINT.

sh: Make warnings in the printf builtin non-fatal, like in the program.

2010-12-20T23:06:57Z

The #define for warnx now behaves much like the libc function (except that it uses sh command name and output). Also, it now uses C99 __VA_ARGS__ so there is no need for three different macros for 0, 1 or 2 parameters.

Revert r216423 per request from Jilles.

2010-12-14T20:35:08Z

The new behavior prevents us from being able to bail out explicitly on unknown options that we have not implemented. BASH for instance have introduced a '-v' for printf(1) builtin and it seems to be bad to pretend that we supported it and have a script break silently.

When printf is being used as a sh(1) builtin, it can not call

2010-12-14T18:23:15Z

exit(3) as pointed out by jilles@ so revert to using return(), also change the return value back to 1 as requested by bde@. This is logically a revert of revision 216422.