Use the same options like m4 (-g turns on GNU, -G turns off GNU) Suggested
by uwe@

Add -G to support GNU extensions

sed(1): Don't force a newline on last line, if input stream doesn't have one

While here, change how we check if the current line is the last one.
Before, we just checked if there were more files after the current one.
Now, we check the actual content of those files: they files may not have
a line at all. This matches the definition of the "last line" by the
Open Group.

The new behavior is closer to GNU sed.

From FreeBSD (9dd857db3dc558dc61dc8674d204ebc83cac0739), requested by mrg@

add an abort for a case that can't happen

branches: 1.34.16;
The latest refactoring changes broke sed -i:
cd /tmp; echo foo > test; sed -i.orig s,fo,ba, test
Back them out until they are fixed.

Close files opened at processing time within processing phase.

Move data I/O file pointers into processing part.

Improve modularity of "sed" source:
- move program source input subroutines into compiler part;
- move data I/O subroutines into processor part.

restore sccsid[]'s per core@'s decision

typo

CID 10006930: Prevent outfile overwrite resource leak.

Fix usage. The man page is incorrect with respect to -I and -i and need
fixing, but my troff foo is not there.

Sync usage with manpage.

add -u (unbuffered output) after GNU sed.

usage is __dead. Kill useless sccsid.

Prefer setvbuf for those who have it.

Merge our changes.

branches: 1.21.12; 1.21.22;
Merge the following revisions from OpenBSD to let sed(1) handle
arbitrarily long lines (closes our PR bin/42261).
openbsd/usr.bin/sed/extern.h 1.5
openbsd/usr.bin/sed/main.c 1.13-1.15
openbsd/usr.bin/sed/misc.c 1.8
openbsd/usr.bin/sed/compile.c 1.25-1.28
openbsd/usr.bin/sed/defs.h 1.4

Fix WARNS=4 issues (-Wcast-qual -Wsign-compare)

branches: 1.19.6;
Add a -r flag that is an alias for -E, for compatibility with gnu sed.

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

branches: 1.17.20;
Make TOOL_SED, to allow using our own sed in cases where the host's version
is busted in some way.

The TOOL_SED doesn't use TIOCGWINSIZE, and has some changes to include
nbtool_config.h in a cross build environment.

Combined with some other changes (not yet committed), this allows cross
compiling m68k code on Solaris 10/amd64.

branches: 1.16.6;
Usage: Options before arguments; add -E. From Kouichirou Hiratsuka in PR 26255.

call setprogname(), replace a 'sed' with getprogname().

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Remove #if __STDC__. De-__P() and ANSIfy.

Fix format string in usage. bin/16869 by Julio Merino.

Add a -E flag to ed(1) and sed(1) so that they can use extended
regular expressions instead of just basic regular expressions.

WARNSify, fix .Nm usage, deprecate register, getopt returns -1 not EOF

RCS ID police

Use an integer instead of a char with getc() and ungetc() in mf_fgets()
so that it works with compilers that default to unsigned chars
Note: getc() and ungetc() are prototyped to use ints rather than
chars.

Fixed typo in usage string.

RCS id's

update from Diomidis Spinellis <dspin@leon.nrcps.ariadne-t.gr>

rename fgetline() and sharpen axe for bostic...

update for fgetline

Add RCS identifiers.

branches: 1.1.1;
added Berkeley sed with mods to use GNU regex

sed(1): Don't force a newline on last line, if input stream doesn't have one

While here, change how we check if the current line is the last one.
Before, we just checked if there were more files after the current one.
Now, we check the actual content of those files: they files may not have
a line at all. This matches the definition of the "last line" by the
Open Group.

The new behavior is closer to GNU sed.

From FreeBSD (9dd857db3dc558dc61dc8674d204ebc83cac0739), requested by mrg@

add an abort for a case that can't happen

branches: 1.34.16;
The latest refactoring changes broke sed -i:
cd /tmp; echo foo > test; sed -i.orig s,fo,ba, test
Back them out until they are fixed.

Close files opened at processing time within processing phase.

Move data I/O file pointers into processing part.

Improve modularity of "sed" source:
- move program source input subroutines into compiler part;
- move data I/O subroutines into processor part.

restore sccsid[]'s per core@'s decision

typo

CID 10006930: Prevent outfile overwrite resource leak.

Fix usage. The man page is incorrect with respect to -I and -i and need
fixing, but my troff foo is not there.

Sync usage with manpage.

add -u (unbuffered output) after GNU sed.

usage is __dead. Kill useless sccsid.

Prefer setvbuf for those who have it.

Merge our changes.

branches: 1.21.12; 1.21.22;
Merge the following revisions from OpenBSD to let sed(1) handle
arbitrarily long lines (closes our PR bin/42261).
openbsd/usr.bin/sed/extern.h 1.5
openbsd/usr.bin/sed/main.c 1.13-1.15
openbsd/usr.bin/sed/misc.c 1.8
openbsd/usr.bin/sed/compile.c 1.25-1.28
openbsd/usr.bin/sed/defs.h 1.4

Fix WARNS=4 issues (-Wcast-qual -Wsign-compare)

branches: 1.19.6;
Add a -r flag that is an alias for -E, for compatibility with gnu sed.

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

branches: 1.17.20;
Make TOOL_SED, to allow using our own sed in cases where the host's version
is busted in some way.

The TOOL_SED doesn't use TIOCGWINSIZE, and has some changes to include
nbtool_config.h in a cross build environment.

Combined with some other changes (not yet committed), this allows cross
compiling m68k code on Solaris 10/amd64.

branches: 1.16.6;
Usage: Options before arguments; add -E. From Kouichirou Hiratsuka in PR 26255.

call setprogname(), replace a 'sed' with getprogname().

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Remove #if __STDC__. De-__P() and ANSIfy.

Fix format string in usage. bin/16869 by Julio Merino.

Add a -E flag to ed(1) and sed(1) so that they can use extended
regular expressions instead of just basic regular expressions.

WARNSify, fix .Nm usage, deprecate register, getopt returns -1 not EOF

RCS ID police

Use an integer instead of a char with getc() and ungetc() in mf_fgets()
so that it works with compilers that default to unsigned chars
Note: getc() and ungetc() are prototyped to use ints rather than
chars.

Fixed typo in usage string.

RCS id's

update from Diomidis Spinellis <dspin@leon.nrcps.ariadne-t.gr>

rename fgetline() and sharpen axe for bostic...

update for fgetline

Add RCS identifiers.

branches: 1.1.1;
added Berkeley sed with mods to use GNU regex

add an abort for a case that can't happen

The latest refactoring changes broke sed -i:
cd /tmp; echo foo > test; sed -i.orig s,fo,ba, test
Back them out until they are fixed.

Close files opened at processing time within processing phase.

Move data I/O file pointers into processing part.

Improve modularity of "sed" source:
- move program source input subroutines into compiler part;
- move data I/O subroutines into processor part.

restore sccsid[]'s per core@'s decision

typo

CID 10006930: Prevent outfile overwrite resource leak.

Fix usage. The man page is incorrect with respect to -I and -i and need
fixing, but my troff foo is not there.

Sync usage with manpage.

add -u (unbuffered output) after GNU sed.

usage is __dead. Kill useless sccsid.

Prefer setvbuf for those who have it.

Merge our changes.

branches: 1.21.12; 1.21.22;
Merge the following revisions from OpenBSD to let sed(1) handle
arbitrarily long lines (closes our PR bin/42261).
openbsd/usr.bin/sed/extern.h 1.5
openbsd/usr.bin/sed/main.c 1.13-1.15
openbsd/usr.bin/sed/misc.c 1.8
openbsd/usr.bin/sed/compile.c 1.25-1.28
openbsd/usr.bin/sed/defs.h 1.4

Fix WARNS=4 issues (-Wcast-qual -Wsign-compare)

branches: 1.19.6;
Add a -r flag that is an alias for -E, for compatibility with gnu sed.

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

branches: 1.17.20;
Make TOOL_SED, to allow using our own sed in cases where the host's version
is busted in some way.

The TOOL_SED doesn't use TIOCGWINSIZE, and has some changes to include
nbtool_config.h in a cross build environment.

Combined with some other changes (not yet committed), this allows cross
compiling m68k code on Solaris 10/amd64.

branches: 1.16.6;
Usage: Options before arguments; add -E. From Kouichirou Hiratsuka in PR 26255.

call setprogname(), replace a 'sed' with getprogname().

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Remove #if __STDC__. De-__P() and ANSIfy.

Fix format string in usage. bin/16869 by Julio Merino.

Add a -E flag to ed(1) and sed(1) so that they can use extended
regular expressions instead of just basic regular expressions.

WARNSify, fix .Nm usage, deprecate register, getopt returns -1 not EOF

RCS ID police

Use an integer instead of a char with getc() and ungetc() in mf_fgets()
so that it works with compilers that default to unsigned chars
Note: getc() and ungetc() are prototyped to use ints rather than
chars.

Fixed typo in usage string.

RCS id's

update from Diomidis Spinellis <dspin@leon.nrcps.ariadne-t.gr>

rename fgetline() and sharpen axe for bostic...

update for fgetline

Add RCS identifiers.

branches: 1.1.1;
added Berkeley sed with mods to use GNU regex