bin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

bin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

bin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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sh: also auto-complete functions

Differential Revision: https://reviews.freebsd.org/D40619

sh: tab-complete aliases

Differential Revision: https://reviews.freebsd.org/D40619

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

sh: also auto-complete built-ins

Reported in a comment in PR 261728.

Reported by: Oleg
Reviewed by: jilles (previous version), bapt
Differential Revision: https://reviews.freebsd.org/D39839

sh: improve style

sh(1): fix history file write checking

We cannot just compare histsizeval() against 0, since that returns
a string pointer, which is always non-zero (non-null). The logic
in sethistsize() initialize

sh(1): fix history file write checking

We cannot just compare histsizeval() against 0, since that returns
a string pointer, which is always non-zero (non-null). The logic
in sethistsize() initializes the history size to 100 with values
that are non-number, and an empty string counts as that. Therefore,
the only time we want to not write into history with HISTSIZE val
set is when it's explicitly 0.

MFC after: 2 weeks

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sh(1): Allow non-printing characters in prompt strings

Introduce new prompt format characters:

- '\[' starts the sequence of non-printing chatacters
- '\]' ends the sequence of non-printing charact

sh(1): Allow non-printing characters in prompt strings

Introduce new prompt format characters:

- '\[' starts the sequence of non-printing chatacters
- '\]' ends the sequence of non-printing characters

Within these sequences, the following characters are now supported:

- '\a' emits ASCII BEL (0x07, 007) character
- '\e' emits ASCII ESC (0x1b, 033) character
- '\r' emits ASCII CR (0x0d, 015) character
- '\n' emits ASCII CRLF sequence

These can be used to embed ANSI sequences into prompt strings.

Example in .shrc:

PS1="\[\e[7m\]\u@\h\[\e[0m\]:\w \\$ "

This tries to maintain some degree of compatibility with GNU bash,
that uses GNU readline library (which behaves slightly different from
BSD editline): It has two "non-printing boundary" characters:

- RL_PROMPT_START_IGNORE (\001)
- RL_PROMPT_END_IGNORE (\002)

while BSD editline only has one (when using EL_PROMPT_ESC setting), so
for this purpose, ASCII \001 was chosen and both \[ and \] emits
this character.

And while here, enlarge PROMPTLEN from 128 to 192 characters.

Reviewed by: jilles
Approved by: jilles
Differential Revision: https://reviews.freebsd.org/D37701

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sh: accept fc options grouped behind one '-'

As per Utility Syntax Guidelines, accept both forms: -l -n and -ln.

To do that, anticipate the source string for the next option that will
be parsed by

sh: accept fc options grouped behind one '-'

As per Utility Syntax Guidelines, accept both forms: -l -n and -ln.

To do that, anticipate the source string for the next option that will
be parsed by nextopt(). It's not always *argptr, sometimes it is
nextopt_optptr.

To simplify the check for not_fcnumber, slightly modify nextopt() to
always nullify nextopt_optptr in cases where it would have been set
to point to a NUL character.

Reviewed by: jilles
Differential Revision: https://reviews.freebsd.org/D35836

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sh: fix autocompletion for commands that share name with a directory

Provide libedit a special function making it always add a space after
the autocompleted command. The default one adds a slash if

sh: fix autocompletion for commands that share name with a directory

Provide libedit a special function making it always add a space after
the autocompleted command. The default one adds a slash if the word is
also a name of a directory in the current working directory, but this is
wrong for commands.

Reviewed by: bapt, jilles
Differential Revision: https://reviews.freebsd.org/D34544

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sh: Add -o verify to use O_VERIFY when sourcing scripts

Add -o verify to sh to make it use O_VERIFY when
sourcing scripts and reading profiles.

Useful in conjunction with mac_veriexec to help prote

sh: Add -o verify to use O_VERIFY when sourcing scripts

Add -o verify to sh to make it use O_VERIFY when
sourcing scripts and reading profiles.

Useful in conjunction with mac_veriexec to help protect at
least some parts of the boot sequence, e.g., /etc/rc*.

Differential revision: https://reviews.freebsd.org/D30464
Reviewed by: jilles, sjg
Obtained from: Stormshield

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sh: try to avoid overwriting HISTFILE produced by other shells

If an attempt to load history from an existing history file was
unsuccessful, do not try to save command history to that file on exit.

sh: improve command completion

When there are many matches, find the longest common substring starting
from the beginning of each command and use that to replace input.

As an example: on my system,

sh: improve command completion

When there are many matches, find the longest common substring starting
from the beginning of each command and use that to replace input.

As an example: on my system, llv<tab> will be autocompleted to llvm-
and another <tab> will print all matching llvm commands.

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sh: reset sh bindings on bind -e, bind -v

Until this change, any bindings set in histedit() were lost on calls to
bindcmd().

Only bind -e and bind -v call libedit's keymacro_reset(). Currently you

sh: reset sh bindings on bind -e, bind -v

Until this change, any bindings set in histedit() were lost on calls to
bindcmd().

Only bind -e and bind -v call libedit's keymacro_reset(). Currently you
cannot fool libedit/map.c:map_bind() by trying something like bind -le
as when p[0] == '-', it does a switch statement on p[1].

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sh: remove emacs improvements that are now defaults in libedit

sh: improve command completion

When multiple matches are found, we keep the provided string on the
input line and print unique matches as suggestions.

But the multiple matches might be the same com

sh: improve command completion

When multiple matches are found, we keep the provided string on the
input line and print unique matches as suggestions.

But the multiple matches might be the same command found in different
directories, so we should deduplicate the matches first and then decide
whether to autocomplete the command or not, based on the number of
unique matches.

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sh: improve emacs mode

in emacs mode ^W should delete the previous word by default
Note that upstreaming this change directly into libedit is in process.

Reported by: manu
Reviewed by: jills, pstef

sh: improve emacs mode

in emacs mode ^W should delete the previous word by default
Note that upstreaming this change directly into libedit is in process.

Reported by: manu
Reviewed by: jills, pstef, manu
Differential Revision: https://reviews.freebsd.org/D29493

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sh: fix NO_HISTORY build

Move code added in b315a7296d2a ("autocomplete commands") to
conditionally compiled part under #ifndef NO_HISTORY.

Reported by: bdrewery
Fixes: b315a7296d2a

sh: implement persistent history storage

Implement persistent history storage:
the strategy is simple at start: loads the existing .sh_history file
at exit dump it.

The implementation respects the

sh: implement persistent history storage

Implement persistent history storage:
the strategy is simple at start: loads the existing .sh_history file
at exit dump it.

The implementation respects the HISTFILE variable and its POSIX
definition: ~/.sh_history is used if HISTFILE is not set.

to avoid sh to create the history file, set HISTSIZE to 0 or HISTFILE to
en empty value

Co-authored-by: pstef
Reviewed by: jilles
Differential Revision: https://reviews.freebsd.org/D29493

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sh: improve emacs mode

In emacs mode, force ^R to backware search the history
This behaviour is the default in emacs mode for most of the other shells

Note: Note that this can still be overridden v

sh: improve emacs mode

In emacs mode, force ^R to backware search the history
This behaviour is the default in emacs mode for most of the other shells

Note: Note that this can still be overridden via $EDITRC, ~/.editrc or a
bind command after set -o emacs.

MFC after: 1 week
Approved by: jilles
Reviewed by: jilles, arichardson, pstef
Differential Revision: https://reviews.freebsd.org/D29494

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sh(1): autocomplete commands

Without this patch, sh can autocomplete file names but not commands from
$PATH. Use libedit's facility to execute custom function for autocomplete,
but yield to the libr

sh(1): autocomplete commands

Without this patch, sh can autocomplete file names but not commands from
$PATH. Use libedit's facility to execute custom function for autocomplete,
but yield to the library's standard autocomplete function when cursor is
not at position 0.

Reviewed by: bapt
Differential Revision: https://reviews.freebsd.org/D29361

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Fix build with NO_HISTORY set

Reviewed by: jilles
Differential Revision: https://reviews.freebsd.org/D24458

Merge ^/head r352319 through r352435.

Do not use our custom completion function, it is not needed anymore