Delete obsolete /* ARGSUSED */ lint comments.

ok miod@ millert@

Put the hardcoded '\n' character which is found throughout mg into a
buffer specific variable. The diff should not produce any behavourial
changes in mg.

Remove NULL-checks before free().

Clean up the includes in mg.
This does the following:
Moves all POSIX headers from sysdef.h into the individual .c files so that
each file now only includes what it needs. All headers are properly sorted.
Moves the remainder of sysdef.h to other files (mostly def.h) and deletes
sysdef.h now that it's no longer contains anything.
Tweak a comment that references sysdef.h so that it no longer does that.
ok florian@

Change the internal name of the newline function to deconflict with a
function of the same name in term.h. This is the first step towards
cleaning up mg's includes. No user-visible changes.
ok florian@

Add some missing dobeeps.
ok florian@

When killing lines using ^U <n> ^K, count the characters exactly (for
both forwards and backwards cases, though the forward case is better
tested. This is required because the actual character deleter
function (ldelete) requires an exact count. If it runs short, it will
not put the deletion into the kill buffer. This is complicated by how
mg internals consider newline's as counted characters even though they
do not occur in the buffers... and then there is the no newline at EOF
fiasco....

emacs handles the undo of a region kill (C-w) differently than a line kill
(C-k) with respect to cursor position. The former leaves the cursor at the end,
the latter at the beginning of the region.

emacs is wacky.

Make mg undo do the same. ok deraadt

Rename w_flag to w_rflag. This is not a general purpose
flag: it is for redisplay options only. I need an additional all-purpose
flag, so renaming removes the desire to wrongly overload the existing one.

Turdshine. No functional chage.

Expose the undo commands as proper mg functions.
This should have no functional change on undo, but it does facilitate
testing undo behavior.

spacing

Fix a needless inversion of flag names; i.e. change them from the
negative to the positive. undo_boundary_enable(TRUE) makes a LOT more
sense than undo_no_boundary(FALSE).
While here, whack a global, and fix a bug noted by otto:
undoing a file insertion sometimes left stray characters around.
ok beck@, otto@

Rename the header line of a buffer to b_headp, from the remarkably
unintuitive b_linep. No binary change.

Make Window Flags more mnemonic (and less dumb); i.e.
WFHARD -> WFFULL (Redraw full window)
WFFORCE -> WFFRAME (Reframe window).
No binary change

Clean up the ugly casted frees. In one case, this meant eliminating a nasty
struct/union/casting nightmare when building the list of names for filename
completion. In particular, be consistent about strduping and freeing
the list data.

Move kill-related commands to their own file.
This will help move to a kill-ring.

Put the hardcoded '\n' character which is found throughout mg into a
buffer specific variable. The diff should not produce any behavourial
changes in mg.

Remove NULL-checks before free().

Clean up the includes in mg.
This does the following:
Moves all POSIX headers from sysdef.h into the individual .c files so that
each file now only includes what it needs. All headers are properly sorted.
Moves the remainder of sysdef.h to other files (mostly def.h) and deletes
sysdef.h now that it's no longer contains anything.
Tweak a comment that references sysdef.h so that it no longer does that.
ok florian@

Change the internal name of the newline function to deconflict with a
function of the same name in term.h. This is the first step towards
cleaning up mg's includes. No user-visible changes.
ok florian@

Add some missing dobeeps.
ok florian@

When killing lines using ^U <n> ^K, count the characters exactly (for
both forwards and backwards cases, though the forward case is better
tested. This is required because the actual character deleter
function (ldelete) requires an exact count. If it runs short, it will
not put the deletion into the kill buffer. This is complicated by how
mg internals consider newline's as counted characters even though they
do not occur in the buffers... and then there is the no newline at EOF
fiasco....

emacs handles the undo of a region kill (C-w) differently than a line kill
(C-k) with respect to cursor position. The former leaves the cursor at the end,
the latter at the beginning of the region.

emacs is wacky.

Make mg undo do the same. ok deraadt

Rename w_flag to w_rflag. This is not a general purpose
flag: it is for redisplay options only. I need an additional all-purpose
flag, so renaming removes the desire to wrongly overload the existing one.

Turdshine. No functional chage.

Expose the undo commands as proper mg functions.
This should have no functional change on undo, but it does facilitate
testing undo behavior.

spacing

Fix a needless inversion of flag names; i.e. change them from the
negative to the positive. undo_boundary_enable(TRUE) makes a LOT more
sense than undo_no_boundary(FALSE).
While here, whack a global, and fix a bug noted by otto:
undoing a file insertion sometimes left stray characters around.
ok beck@, otto@

Rename the header line of a buffer to b_headp, from the remarkably
unintuitive b_linep. No binary change.

Make Window Flags more mnemonic (and less dumb); i.e.
WFHARD -> WFFULL (Redraw full window)
WFFORCE -> WFFRAME (Reframe window).
No binary change

Clean up the ugly casted frees. In one case, this meant eliminating a nasty
struct/union/casting nightmare when building the list of names for filename
completion. In particular, be consistent about strduping and freeing
the list data.

Move kill-related commands to their own file.
This will help move to a kill-ring.

Remove NULL-checks before free().

Clean up the includes in mg.
This does the following:
Moves all POSIX headers from sysdef.h into the individual .c files so that
each file now only includes what it needs. All headers are properly sorted.
Moves the remainder of sysdef.h to other files (mostly def.h) and deletes
sysdef.h now that it's no longer contains anything.
Tweak a comment that references sysdef.h so that it no longer does that.
ok florian@

Change the internal name of the newline function to deconflict with a
function of the same name in term.h. This is the first step towards
cleaning up mg's includes. No user-visible changes.
ok florian@

Add some missing dobeeps.
ok florian@

When killing lines using ^U <n> ^K, count the characters exactly (for
both forwards and backwards cases, though the forward case is better
tested. This is required because the actual character deleter
function (ldelete) requires an exact count. If it runs short, it will
not put the deletion into the kill buffer. This is complicated by how
mg internals consider newline's as counted characters even though they
do not occur in the buffers... and then there is the no newline at EOF
fiasco....

emacs handles the undo of a region kill (C-w) differently than a line kill
(C-k) with respect to cursor position. The former leaves the cursor at the end,
the latter at the beginning of the region.

emacs is wacky.

Make mg undo do the same. ok deraadt

Rename w_flag to w_rflag. This is not a general purpose
flag: it is for redisplay options only. I need an additional all-purpose
flag, so renaming removes the desire to wrongly overload the existing one.

Turdshine. No functional chage.

Expose the undo commands as proper mg functions.
This should have no functional change on undo, but it does facilitate
testing undo behavior.

spacing

Fix a needless inversion of flag names; i.e. change them from the
negative to the positive. undo_boundary_enable(TRUE) makes a LOT more
sense than undo_no_boundary(FALSE).
While here, whack a global, and fix a bug noted by otto:
undoing a file insertion sometimes left stray characters around.
ok beck@, otto@

Rename the header line of a buffer to b_headp, from the remarkably
unintuitive b_linep. No binary change.

Make Window Flags more mnemonic (and less dumb); i.e.
WFHARD -> WFFULL (Redraw full window)
WFFORCE -> WFFRAME (Reframe window).
No binary change

Clean up the ugly casted frees. In one case, this meant eliminating a nasty
struct/union/casting nightmare when building the list of names for filename
completion. In particular, be consistent about strduping and freeing
the list data.

Move kill-related commands to their own file.
This will help move to a kill-ring.