nl(1): Capsicumise the utility

Signed-off-by: Faraz Vahedi <kfv@kfv.io>
Reviewed by: markj, oshogbo
MFC after: 1 week
Pull Request: https://github.com/freebsd/freebsd-src/pull/1465

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals.

Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

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Remove $FreeBSD$: alt one-line .c pattern

Remove /^\s*__RCSID\("\$FreeBSD\$"\);\n/

spdx: The BSD-2-Clause-NetBSD identifier is obsolete, drop -NetBSD

The SPDX folks have obsoleted the BSD-2-Clause-NetBSD identifier. Catch
up to that fact and revert to their recommended match of BS

spdx: The BSD-2-Clause-NetBSD identifier is obsolete, drop -NetBSD

The SPDX folks have obsoleted the BSD-2-Clause-NetBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

various: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

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Merge ^/head r303250 through r304235.

Remove another occurence of _WITH_GETLINE

MFC @ r266724

An SVM update will follow this.

IFC @266473

Merge from head

Treat the '-' as meaning standard input.

Obtained from: NetBSD

IFC @230489 (pending review).

IFC @ r226824

Make nl(1) build with WARNS=6.

Obtained from: NetBSD

IFH@204581

The NetBSD Foundation has granted permission to remove clause 3 and 4
from their software.

Obtained from: NetBSD

Merge from head

Update the projects tree to a newer FreeBSD current.

Use getline() instead of fgets(). This enables nl(1) to handle
arbitrarily long lines and embedded NULs. The new functionality is
nugatory, but adding it is a simple way to improve the exposure of
ge

Use getline() instead of fgets(). This enables nl(1) to handle
arbitrarily long lines and embedded NULs. The new functionality is
nugatory, but adding it is a simple way to improve the exposure of
getline() in -CURRENT.

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Avoid 'bogus' uninitialized warning by initializing rather than
playing cute games. It is much simpler, clearer and easier to follow
and understand. Besides, gcc4 likes it better.

Remove unused variables.

Add support for multibyte characters.

Tidy up usage message.

Remove local prototypes for main().

The XCU issue 5 requirement of accepting the file operand intermingled
with options has been withdrawn in issue 6, to which nl(1) now conforms.