Add a new %n$ option to change the order of the parameters as
done in the ksh93 builtin printf (among others).
For example:
%printf '%2$1d %1$s\n' one 2 three 4
2 one
4 three
The feature was written by Garret D'Amore under a
BSD license for Nexenta/illumos.
Reference:
http://garrett.damore.org/2010/10/new-implementation-of-printf.html
PR: bin/152934
Obtained from: Illumos
MFC after: 2 weeks
This means these features do not work as expected with multibyte characters.
This perhaps less than ideal behaviour matches printf(3) and is specified by
POSIX.
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.
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
Also add $FreeBSD$ to a few files to keep svn happy.
Discussed with: imp, rwatson
This was removed in 2001 but I think it is appropriate to add it back:
* I do not want to encourage people to write fragile and non-portable echo
commands by making printf much slower than echo.
* Recent versions of Autoconf use it a lot.
* Almost no software still wants to support systems that do not have
printf(1) at all.
* In many other shells printf is already a builtin.
Side effect: printf is now always the builtin version (which behaves
identically to /usr/bin/printf) and cannot be overridden via PATH (except
via the undocumented %builtin mechanism).
Code size increases about 5K on i386. Embedded folks might want to replace
/usr/bin/printf with a hard link to /usr/bin/alias.
Octal escape sequences are expanded to bytes, not characters, and multiple
are required for a multibyte character.
The valid escape sequences in %b strings are slightly different from the
escape sequences in the format string.
When L is omitted, double precision is used, so printf(1) gives
reproducable results. When L is specified, long double precision is
used, which may improve precision, depending on the machine.
processing them.
- \c escape to immediately stop output (similar to echo's \c)
- \0NNN should be allowed for octal character escapes (instead of just \NNN)
- %b conversion, which is like %s but interprets \n \t etc. inside the
string is missing.
And I may not be any poet, but in lieu of an in-tree regression test:
ref5% ./printf '%s%b%b%c%s%d\n' 'PR' '\0072' '\t' '3' '56' 0x10
PR: 35616
Submitted by: tjr
MFC after: 1 week
used so often that it's worth keeping it as a builtin.
Now that all the printf invocations from within the system startup
scripts, we can safely remove it.
Urged by: sheldonh :)
No MFC is planned so far because it may break compatibility and
violate POLA.
commit and those which cause ugly nroff output have been fixed, since
the purpose of the style guideline which they contravene is to reduce
the sizes of deltas.
Reported by: bde
* Consistently misspell built-in as builtin.
* Add a builtin(1) manpage and create builtin(1) MLINKS for all shell
builtin commands for which no standalone utility exists. These MLINKS
replace those that were created for csh(1).
* Add appropriate xrefs for builtin(1) to the csh(1) and sh(1) manpages,
as well as to the manpages of standalone utilities which are supported
as shell builtin commands in at least one of the shells. In such
manpages, explain that similar functionality may be provided as a
shell builtin command.
* Improve sh(1)'s description of the cd builtin command. Csh(1) already
describes it adequately. Replace the cd(1) manpage with a builtin(1)
MLINKS link.
* Clean up some mdoc problems: use Xr instead of literal "foo(n)"; use
Ic instead of Xr for shell builtin commands.
* Undo English contractions.
Reviewed by: mpp, rgrimes
track.
The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;
.\" $Id$
.\"
If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.
Approved by: bde
