Handle commits on a per-directory basis instead handling all of them at
once in local setup. Also added '!' to reuse typed log message for all
following directories.

ok joris

Properly build up path to description files (descr entry in RCS files if
you add a file with -m message).

ok joris

Full support of branches added. We lacked proper support of multiple
branch entry points in one revision as well as branches which started from
other branches.

ok joris

proper repository locking:
- all read operations now look for a lock, and wait if present but never
try to lock the tree themselfs anymore.
- all write operations lock the tree where needed.
- comm

proper repository locking:
- all read operations now look for a lock, and wait if present but never
try to lock the tree themselfs anymore.
- all write operations lock the tree where needed.
- commit locks all relevant directories before even attempting to start.

show more ...

prevent file races

ok tobias@

With latest buf cleanup, rcs_rev_getbuf won't return NULL anymore.

OK joris@

Cleanup buf implementation:

* Don't check for NULL on buffer creation, because it calls fatal() when
something's wrong.
* All buffers are supposed to expand if there is no space left in them,
so

Cleanup buf implementation:

* Don't check for NULL on buffer creation, because it calls fatal() when
something's wrong.
* All buffers are supposed to expand if there is no space left in them,
so zap flags as well.
* Remove code that is now dead.

OK joris@

> Inspired by a diff from Igor Zinovik about unchecked return value.

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do not allow commits to files that have a sticky date set

CVSROOT/modules:

correct -i and -o usage

-i runs the program specified on commit
-o runs the program specified on checkout

Added -k flag support for all commands which support it.

OK joris@

free RCSNUM's when we are done with them;

ok tobias@

Replaced the unused cvs_command variable cmd_req with cmd_flags, which states
if the current command is supposed to use a working directory or if it is a
repository-only command (as of now checkout -

Replaced the unused cvs_command variable cmd_req with cmd_flags, which states
if the current command is supposed to use a working directory or if it is a
repository-only command (as of now checkout -p, rtag, rlog).

Makes the code simpler, easier to read and automagically fixes some issues
we encountered with these commands (for example if a working directory
exists, or "." operations are performed).

OK joris@, niallo@

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Properly free dynamically allocated memory. Also skip needless checks.

> Diff from Igor Zinovik

Zapped some variables which made the source harder to read (and to verify).

> Diff from Igor Zinovik

checkout's options -m and -F are mutually exclusive. Also watch out to
properly free arguments if options are supplied multiple times.

OK ray@

> Diff from Igor Zinovik

Properly handle -R -- although it is default, it may be overwritten mit -l
in front of it.

OK joris@, xsa@

> Diff from Igor Zinovik

Revision buffers are supposed to be of size CVS_REV_BUFSZ (32) instead
of 24.

OK xsa@

> Diff from Igor Zinovik.

Typos fixed.

OK xsa@

> Diff from Igor Zinovik.

Our keyword expansion had a big flaw, due to this construction:
if (!(mode & RCS_KWEXP_NONE))

RCS_KWEXP_NONE is defined to 0, so expansion happened always.

Left shifted all RCS_KWEXP defines and lo

Our keyword expansion had a big flaw, due to this construction:
if (!(mode & RCS_KWEXP_NONE))

RCS_KWEXP_NONE is defined to 0, so expansion happened always.

Left shifted all RCS_KWEXP defines and looked carefully at hard-coded values
throughout the code.

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RCS files without head keyword mustn't segfault our implementation. Only
command that supports such files is "cvs status", therefore properly handle
them in all other commands, too.

do not try to reset the default branch if the RCS file
does not exist, fixes a segfault when commiting a new file.

found by tobias@ who is going to make a nice little regression test for this.

reset the default branch early on so rcs_head_get() does not screw us up
and returns a possibly wrong revision as 'current revision'.

noticed by tobias@ his regress testing

unused vars

add support to commit modified files to branches.

make sure when running update -r on existing files to overwrite
the sticky directory tag with it. since -r gets priority.