Provided by: aegis_4.21-2_i386 bug

NAME

       aegis -MoVe_file_Undo - undo the rename a file as part of a change

SYNOPSIS

       aegis -MoVe_file_Undo [ option...  ] filename...
       aegis -MoVe_file_Undo -List [ option...  ]
       aegis -MoVe_file_Undo -Help

DESCRIPTION

       The aegis -MoVe_file_Undo command is used to reverse the effects of the
       aegis -MoVe_file command.  You only need to name one half of the
       rename, the other half will be determined automatically.  You may apply
       this command to whole directories.

       The named files will be removed from the development directory, and
       removed from the list of files in the change.

   File Name Interpretation
       The aegis program will attempt to determine the project file names from
       the file names given on the command line.  All file names are stored
       within aegis projects as relative to the root of the baseline directory
       tree.  The development directory and the integration directory are
       shadows of this baseline directory, and so these relative names apply
       here, too.  Files named on the command line are first converted to
       absolute paths if necessary.  They are then compared with the baseline
       path, the development directory path, and the integration directory
       path, to determine a baseline-relative name.  It is an error if the
       file named is outside one of these directory trees.

       The -BAse_RElative option may be used to cause relative filenames to be
       interpreted as relative to the baseline path; absolute filenames will
       still be compared with the various paths in order to determine a
       baseline-relative name.

       The relative_filename_preference in the user configuration file may be
       used to modify this default behavior.  See aeuconf(5) for more
       information.

   Process Side Effects
       This command will cancel any build or test registrations, because
       adding another file logically invalidates them.

   Notification
       The new_file_undo_command and remove_file_undo_command in the project
       config file are run, if set.  The project_file_command is also run, if
       set, and if there has been an integration recently.  See aepconf(5) for
       more information.

WHITEOUT

       Aegis provides you with what is often called a ‘‘view path’’ which
       indicates to development tools (compilers, build systems, etc) look
       first in the development directory, then in the branch baseline, and so
       on up to the trunk baseline.

       The problem with view paths is that in order to remove files, you need
       some kind of "whiteout" to say ‘‘stop looking, it’s been removed.’’

       When you user the aerm(1) or aemv(1) commands, this means "add
       information to this change which will remove the file from the baseline
       when this change is integrated".  I.e. while the change is in the being
       developed state, the file is only "removed" in the development
       directory - it’s still present in the baseline, and will be until the
       change is successfully integrated.

       When you use the aerm(1) or aemv(1) commands, Aegis will create a 1K
       file to act as the whiteout.  It’s contents are rather ugly so that if
       you compile or include the "removed" file accidentally, you get a fatal
       error.  This will remind you to remove obsolete references.

       When the change in integrated, the removed file is not copied/linked
       from the baseline to the integration directory, and is not copied from
       the development directory.  At this time it is physically gone (no
       whiteout).  It is assumed that because of the error inducing whiteout
       all old references were found and fixed while the change was in the
       being developed state.

   File Manifests
       When generating list of files to be compiled or linked, it is important
       that the file manifest be generated from information known by Aegis,
       rather than from the file system.  This is for several reasons:

       (a) Aegis knows exactly what (source) files are where, whereas
           everything else is inferring Aegis’ knowledge; and

       (b) looking in the file system is hard when the view path is longer
           that 2 directories (and Aegis’ branching method can make it
           arbitrarily long); and

       (c) The whiteout files, and anything else left ‘‘lying around’’, will
           confuse any method which interrogates the file system.

       The easiest way to use Aegis’ file knowledge is with something like an
       awk(1) script processing the Aegis file lists.  For example, you can do
       this with make(1) as follows:
              # generate the file manifest
              manifest.make.inc: manifest.make.awk
                   ( aegis -l cf -ter ; aegis -l pf -ter ) | \
                   awk -f manifest.make.awk > manifest.make.inc
              # now include the file manifest
              include manifest.make.inc
       Note: this would be inefficient of you did it once per directory, but
       there is nothing stopping you writing numerous assignments into the
       manifest.make.inc file, all in one pass.

       It is possible to do the same thing with Aegis’ report generator (see
       aer(1) for more information), but this is more involved than the awk(1)
       script.  However, with the information "straight from the horse’s
       mouth" as it were, it can also be much smarter.

       This file manifest would become out-of-date without an interlock to
       Aegis’ file operations commands.  By using the project-file_command and
       change_file_command fields of the project config file (see aepconf(5)
       for more information), you can delete this file at strategic times.
              /* run when the change file manifest is altered */
              change_file_command = "rm -f manifest.make.inc";
              /* run when the project file manifest is altered */
              project_file_command = "rm -f manifest.make.inc";
       The new file manifest will thus be re-built during the next aeb(1)
       command.

   Options and Preferences
       There is a -No-WhiteOut option, which may be used to suppress whiteout
       files when you use the aerm(1) and aemv(1) commands.  There is a
       corresponding -WhiteOut option, which is usually the default.

       There is a whiteout_preference field in the user preferences file (see
       aeuconf(5) for more information) if you want to set this option more
       permanently.

   Whiteout File Templates
       The whiteout_template field of the project config file may be used to
       produce language-specific error files.  If no whiteout template entry
       matches, a very ugly 1KB file will be produced - it should induce
       compiler errors for just about any language.

       If you want a more human-readable error message, entries such as
              whiteout_template =
              [
                   {
                   pattern = [ "*.[ch]" ];
                   body = "#error This file has been removed.";
                   }
              ];
       can be very effective (this example assumes gcc(1) is being used).

       If it is essential that no whiteout file be produced, say for C source
       files, you could use a whiteout template such as
              whiteout_template =
              [
                   { pattern = [ "*.c" ]; }
              ];
       because an absent body sub-field means generate no whiteout file at
       all.

       You may have more than one whiteout template entry, but note that the
       order of the entries is important.  The first entry which matches will
       be used.

   Notification
       On successful completion of this command, the notifications usually
       performed by the aermu(1), aenfu(1) and aentu(1) commands are run, as
       appropriate.  These include the project_file_command, new_file_undo_
       command, new_test_undo_command and remove_file_undo_command fields of
       the project config file.  See aepconf(5) for more information.

OPTIONS

       The following options are understood:

       -Change number
               This option may be used to specify a particular change within a
               project.  See aegis(1) for a complete description of this
               option.

       -Help
               This option may be used to obtain more information about how to
               use the aegis program.

       -List
               This option may be used to obtain a list of suitable subjects
               for this command.  The list may be more general than expected.

       -Not_Logging
               This option may be used to disable the automatic logging of
               output and errors to a file.  This is often useful when several
               aegis commands are combined in a shell script.

       -Project name
               This option may be used to select the project of interest.
               When no -Project option is specified, the AEGIS_PROJECT
               environment variable is consulted.  If that does not exist, the
               user’s $HOME/.aegisrc file is examined for a default project
               field (see aeuconf(5) for more information).  If that does not
               exist, when the user is only working on changes within a single
               project, the project name defaults to that project.  Otherwise,
               it is an error.

       -TERse
               This option may be used to cause listings to produce the bare
               minimum of information.  It is usually useful for shell
               scripts.

       -Verbose
               This option may be used to cause aegis to produce more output.
               By default aegis only produces output on errors.  When used
               with the -List option this option causes column headings to be
               added.

       -Verify_Symbolic_Links
               This option may be used to request that the symbolic links, or
               hard links, or file copies, in the work area be updated to
               reflect the current state of the baseline.  This is controlled
               by the development_directory_style field of the project
               configuration file.  Only files which are not involved in the
               change are updated.  See also the ‘‘symbolic_links_preference’’
               field of aeuconf(5).  This option is the default, if meaningful
               for your configuration.  The name is an historical accident,
               hard links and file copies are included.

       -Assume_Symbolic_Links
               This option may be used to request that no update of baseline
               mirror files take place.  This options is useful when you
               definitely know the files’ up-to-date-ness isn’t important
               right now; incorrect use of this option may have unanticipated
               build side-effects.  See also the ‘‘symbolic_links_preference’’
               field of aeuconf(5).  This option is the default, if not
               meaningful for your configuration.  The name is an historical
               accident, hard links and file copies are included.

       -Wait   This option may be used to require Aegis commands to wait for
               access locks, if they cannot be obtained immediately.  Defaults
               to the user’s lock_wait_preference if not specified, see
               aeuconf(5) for more information.

       -No_Wait
               This option may be used to require Aegis commands to emit a
               fatal error if access locks cannot be obtained immediately.
               Defaults to the user’s lock_wait_preference if not specified,
               see aeuconf(5) for more information.

       -WhiteOut
               This option may be used to request that deleted files be
               replaced by a ‘‘whiteout’’ file in the development directory.
               The idea is that compiling such a file will result in a fatal
               error, in order that all references may be found.  This is
               usually the default.

       -No_WhiteOut
               This option may be used to request that no ‘‘whiteout’’ file be
               placed in the development directory.

       See also aegis(1) for options common to all aegis commands.

       All options may be abbreviated; the abbreviation is documented as the
       upper case letters, all lower case letters and underscores (_) are
       optional.  You must use consecutive sequences of optional letters.

       All options are case insensitive, you may type them in upper case or
       lower case or a combination of both, case is not important.

       For example: the arguments "-project, "-PROJ" and "-p" are all
       interpreted to mean the -Project option.  The argument "-prj" will not
       be understood, because consecutive optional characters were not
       supplied.

       Options and other command line arguments may be mixed arbitrarily on
       the command line, after the function selectors.

       The GNU long option names are understood.  Since all option names for
       aegis are long, this means ignoring the extra leading ’-’.  The
       "--option=value" convention is also understood.

RECOMMENDED ALIAS

       The recommended alias for this command is
       csh%    alias aemvu ’aegis -mvu \!* -v’
       sh$     aemvu(){aegis -mvu "$@" -v}

ERRORS

       It is an error if the change is not in the being developed state.
       It is an error if the change is not assigned to the current user.
       It is an error if the file is not being moved by the change.

EXIT STATUS

       The aegis command will exit with a status of 1 on any error.  The aegis
       command will only exit with a status of 0 if there are no errors.

ENVIRONMENT VARIABLES

       See aegis(1) for a list of environment variables which may affect this
       command.  See aepconf(5) for the project configuration file’s project_
       specific field for how to set environment variables for all commands
       executed by Aegis.

SEE ALSO

       aecp(1) copy files into a change

       aedb(1) begin development of a change

       aemv(1) rename files as part of a change

       aenf(1) add files to be created by a change

       aenfu(1)
               remove files to be created by a change

       aerm(1) add files to be deleted by a change

       aermu(1)
               remove files to be deleted by a change

       aeuconf(5)
               user configuration file format

COPYRIGHT

       aegis version 4.21
       Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
       2000, 2001, 2002, 2003, 2004, 2005 Peter Miller; All rights reserved.

       The aegis program comes with ABSOLUTELY NO WARRANTY; for details use
       the ’aegis -VERSion License’ command.  This is free software and you
       are welcome to redistribute it under certain conditions; for details
       use the ’aegis -VERSion License’ command.

AUTHOR

       Peter Miller   E-Mail:   millerp@canb.auug.org.au
       /\/\*             WWW:   http://www.canb.auug.org.au/~millerp/