IFI Fossil Interface (IFI) for Emacs
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This manual (last modified Wed 8 Sep 2021 11:13:30 BST, base 21c953800f9) documents IFI Fossil Interface (IFI) version 0.1; part of its pre-alpha development phase.
Contents
| • Introduction: | ||
| • Getting started: | ||
| • IFI buffers: | ||
| • Primary features: | ||
| • Design features: | ||
| • GNU Free Documentation License: |
Next: Getting started, Up: Top
1 Introduction
Fossil is a distributed software configuration management (SCM) system with built-in HTTP server and web interface.
IFI provides two facilities for working with Fossil in Emacs; an enhanced shell buffer (see *Fossil shell* buffers) employing Fossil’s built-in shell, and a checkouts buffer (see The *Fossil checkouts* buffer) providing an overview of the current state of all Fossil checkout directories.
The enhanced shell facility may be loaded and used independently of the checkouts buffer facility, but the reverse is not possible. The checkouts buffer is dependent on one or more enhanced shells for carrying out Fossil commands. This is by design (see Design features).
IFI does not interfere with, and does not replace, Emacs’ generic version control interface VC (see (emacs)Version Control), when Venkat Iyer’s Fossil backend is installed:
Next: IFI buffers, Previous: Introduction, Up: Top
2 Getting started
| • Obtaining IFI: | ||
| • Installation: | ||
| • Documentation: | ||
| • Compatibility: | ||
| • Staying informed: | ||
| • Contributing: |
Next: Installation, Up: Getting started
2.1 Obtaining IFI
Not surprisingly, IFI’s development home is a Fossil repository known as ‘HEmP’:
The copy of HEmP hosted at the above URL is known as ‘canonical HEmP’. There you will find instructions on how to clone the repository as a whole, as well as a link to the latest IFI release tarball.
N.B. HEmP includes mulitiple Emacs projects. If you decide to clone the repository, pay attention to the ‘Anonymous quick start’ instructions found in file home.md at the top level of branch trunk, or at the above URL.
Next: Documentation, Previous: Obtaining IFI, Up: Getting started
2.2 Installation
Installation is the same whether you clone HEmP or download and extract a release tarball (see Obtaining IFI). In either case, the directory containing IFI’s source files:
ifi-ckout.el ifi-custom.el ifi-lib.el ifi-loaddefs.el ifi-shell.el ifi-x.el
must be added to Emacs’ load-path before you issue the command:
M-x load-library RET ifi-loaddefs RET
At this point, the two IFI entry point commands:
M-x fossil-shell M-x fossil-checkouts
are available but the set of source files that define each command have not been loaded (see (elisp)Autoload). To load the source files and begin using IFI, simply issue one of the above two commands. (See *Fossil shell* buffers or see The *Fossil checkouts* buffer).
To make the two IFI entry point commands available at start-up , add the following line to your .emacs init file:
(require 'ifi-loaddefs)
If you prefer to load all IFI source files at start-up (rather than on first use), add this line to your .emacs init file instead:
(require 'ifi-ckout)
This is sufficient because, as described in the introduction (see Introduction), the checkouts buffer facility depends on the enhanced shell facility and will ensure the shell facility is loaded.
Finally, you may load only the source files required by the enhanced shell facility, and ensure the checkouts buffer facility is available when it is needed, by adding these two lines to your .emacs init file:
(require 'ifi-shell) (require 'ifi-loaddefs) ; make `M-x fossil-checkouts' available
As always, the time it takes to load Emacs Lisp source files can be
reduced by byte compiling them beforehand (see (elisp)Byte Compilation). Visit the directory containing the IFI source files in
Dired and issue command C-u 0 M-x
byte-recompile-directory RET. The position of point is unimportant.
IFI should compile cleanly in GNU Emacs version >= 26.3 and all later
versions (see Compatibility).
Next: Compatibility, Previous: Installation, Up: Getting started
2.3 Documentation
This manual is included in release tarballs and is available online in the following formats:
- HTML (Fossilized)
- HTML (Standalone)
- Plain text
- Info
N.B. The online editions of the manual document IFI’s development version and may differ substantially from the editions included in a release tarball, especially during its early development phases. (Current phase: pre-alpha).
The easiest way to browse the Info manual in Emacs (in the absence of
an installation script) is to load Emacs library Dired Extra.
(See (dired-x)Top). With Dired Extra loaded, simply
visit the doc/ directory in Dired, position point on
file ifi.info and type Shift-I.
Next: Staying informed, Previous: Documentation, Up: Getting started
2.4 Compatibility
IFI development began in GNU Emacs 26.3 and is being continued in version 27.2. It should byte-compile cleanly, i.e. without warnings, in Emacs 26.3 and all later versions.
IFI has not been tested in earlier versions of GNU Emacs, nor on platforms other than GNU/Linux. Compilation bug reports are welcome. See Contributing.
Next: Contributing, Previous: Compatibility, Up: Getting started
2.5 Staying informed
Stay informed about IFI development by signing up for email alerts at canonical HEmP:
You may choose between announcements, checkin (commit) alerts, forum posts, forum edits, ticket and wiki page alerts.
N.B. HEmP includes multiple Emacs projects. It is not possible to subscribe to IFI alerts only.
If desired, you may sign up anonymously, i.e. without a named user account.
Previous: Staying informed, Up: Getting started
2.6 Contributing
Contributions to IFI development should be made at canonical HEmP. There you can post to the forum and open new tickets, anonymously if you prefer, i.e. without a named user account.
2.6.1 Canonical HEmP forum
The canonical HEmP forum is for general queries, feedback, policy deliberation, simple patches e.t.c.
N.B. HEmP includes multiple Emacs projects. The title of new forum posts discussing IFI development should therefore begin with IFI: . For example:
IFI: Issue with multiple *Fossil shell* buffers
2.6.2 Patches
Creating an ordinary patch file with Fossil is simple:
$ fossil diff > file.patch
When posting a patch to the forum, include in the title of your post the 10-digit artifact hash of the checkin/commit against which the patch was made. For example:
IFI: Bugfix patch against 632729f34f
If you have cloned HEmP, the 10-digit artifact hash may be found
either by examining the timeline (look for the *CURRENT* entry) or
by issuing Fossil’s info command like so:
$ fossil info current | grep ^hash: | cut -b 15-24
If you downloaded and extracted an IFI release tarball, the 10-digit artifact hash may be found in the VERSION file.
Note that it is generally best to upload a patch to a pastebin and include a link to the paste in the forum post, rather than including the patch in the forum post itself.
2.6.3 Fossil bundles
For more substantial contributions, the diff command may be
inadequate since it cannnot record file renamings, file deletions, tag
operations, checkin/commit messages e.t.c. In this case, it is better
to clone HEmP, create and work on a development branch,
e.g. ifi-fixes, and then send a
Fossil bundle,
which you would generate like so:
$ fossil bundle export --branch ifi-fixes ifi-fixes.bundle
Internally, Fossil stores state information in SQLite database files, and a Fossil bundle is no different; it’s an SQLite database file. When attaching a Fossil bundle to an email, mime-type application/vnd.sqlite3 should therefore be used.
Enquire in the forum for an email address or use the Fossil administrator address fossil at domain sebyte.me).
N.B. For developers used to making pull or merge requests, no such facility exists in the Fossil ecosystem. Bundles are a powerful alternative.
2.6.4 Canonical HEmP checkin/commit access
The first step towards gaining checkin/commit access to canonical HEmP is to create a named user account and participate in IFI development using the forum.
To create a named user account, visit the canonical HEmP login page and click the button labelled ’Create A New Account’.
2.6.5 HEmP tickets
The canonical HEmP ticket facility is for formal bug reports and feature requests and should generally follow discussion in the forum.
N.B. HEmP includes multiple Emacs projects. The one line ticket summary should therefore begin with IFI: . For example:
IFI: Compilation error under Emacs 24.2
Next: Primary features, Previous: Getting started, Up: Top
3 IFI buffers
| • *Fossil shell* buffers: | The enhanced shell facility | |
| • The *Fossil checkouts* buffer: | The checkout directories overiew facility | |
| • The *Fossil timeline* buffer: | Pretty timelines | |
| • The *Fossil help* buffer: | Pretty help output |
Next: The *Fossil checkouts* buffer, Up: IFI buffers
3.1 *Fossil shell* buffers
Once IFI has been installed (see Installation), you may start a
Fossil shell (and enter a *Fossil shell* buffer) by issuing
command M-x fossil-shell RET. (In fact, M-x fos-sh RET is usually
sufficient). This will start a fossil shell process in
whichever directory is current when you issue the command.
(See (emacs)File Names for a brief explanation of
default-directory).
Let’s suppose that you are visiting your home directory in Dired when
you issue the command M-x fossil-shell RET. Let’s suppose also that your
home directory is not a Fossil checkout. The *Fossil
shell* buffer will, not surprisingly, look like this:
fossil (no repo)>
The shell is waiting for you to start issuing Fossil commands. For example:
fossil (no repo)> info config-db: /home/sebyte/.fossil fossil: /home/sebyte/fossil/bin/fossil version: 2.17 [de417fb73c] 2021-08-06 07:58:18 UTC fossil (no repo)>
However, note the buffer’s header line in which a large red dot is
followed by the abbreviated form of the current directory. Note also
what happens when you type a comma immediately after the Fossil
prompt; the minibuffer prompt reads Shortcut. (See IFI shortcuts). Let’s suppose a checkout of a newly initialised Fossil
repository is found at ~/fossil/sandpit/foo and that you type
cd RET and enter this checkout directory. The *Fossil
shell* buffer would now look something like this:
fossil (no repo)> info config-db: /home/sebyte/.fossil fossil: /home/sebyte/fossil/bin/fossil version: 2.17 [de417fb73c] 2021-08-06 07:58:18 UTC fossil (no repo)> [ cd ~/fossil/sandpit/foo/ ] fossil (unnamed)>
Behind the scenes, the previous fossil shell process has been
killed, the current directory has changed and a new fossil
shell process has been started. The (fake) shell command cd
~/fossil/sandpit/foo/ (delimited by brackets) records where in the
sequence of commands the change of directory occurred.
Note also the changes to the buffer’s header line. Because the new
fossil shell process is running within a Fossil checkout, the
large red dot is now followed by the abbreviated form of the current
directory, the name of the project, the name of the current branch, a
count (in brackets) of how many checkins/commits the checkout is
behind the branch head and, finally, the default remote sync URL of
the Fossil repository to which the checkout belongs. (See IFI headlines).
Now let’s return to your home directory in Dired and issue the command
M-x fossil-shell RET again. We find ourselves in the same *Fossil
shell* buffer we were in before, but a second change of directory has
taken place, returning us to where we were:
fossil (no repo)> info config-db: /home/sebyte/.fossil fossil: /home/sebyte/fossil/bin/fossil version: 2.17 [de417fb73c] 2021-08-06 07:58:18 UTC fossil (no repo)> [ cd ~/fossil/sandpit/foo/ ] fossil (unnamed)> [ cd ~/ ] fossil (no repo)>
The *Fossil shell* buffer has been resued because
user-cutomisable variable ifi-shell-use-multiple-buffers-p is
bound to nil by default. Had you enabled use of multiple shell
buffers before issuing the M-x fossil-shell RET command the second time,
you would have found yourself in a new shell buffer, named
*Fossil shell*<2>.
There’s no limit on how many shell buffers/processes may be alive at once but a directory may only have a single *Fossil shell* buffer associated with it at any one time.
Next: The *Fossil timeline* buffer, Previous: *Fossil shell* buffers, Up: IFI buffers
3.2 The *Fossil checkouts* buffer
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Next: The *Fossil help* buffer, Previous: The *Fossil checkouts* buffer, Up: IFI buffers
3.3 The *Fossil timeline* buffer
Content goes here.
Previous: The *Fossil timeline* buffer, Up: IFI buffers
3.4 The *Fossil help* buffer
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Next: Design features, Previous: IFI buffers, Up: Top
4 Primary features
Content goes here.
| • IFI headlines: | ||
| • IFI shortcuts: |
Next: IFI shortcuts, Up: Primary features
4.1 IFI headlines
Content goes here.
Previous: IFI headlines, Up: Primary features
4.2 IFI shortcuts
Content goes here.
Next: GNU Free Documentation License, Previous: Primary features, Up: Top
5 Design features
Content goes here.
Previous: Design features, Up: Top
Appendix A GNU Free Documentation License
Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
- PREAMBLE
The purpose of this License is to make a manual, textbook, or other functional and useful document free in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others.
This License is a kind of “copyleft”, which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.
We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.
- APPLICABILITY AND DEFINITIONS
This License applies to any manual or other work, in any medium, that contains a notice placed by the copyright holder saying it can be distributed under the terms of this License. Such a notice grants a world-wide, royalty-free license, unlimited in duration, to use that work under the conditions stated herein. The “Document”, below, refers to any such manual or work. Any member of the public is a licensee, and is addressed as “you”. You accept the license if you copy, modify or distribute the work in a way requiring permission under copyright law.
A “Modified Version” of the Document means any work containing the Document or a portion of it, either copied verbatim, or with modifications and/or translated into another language.
A “Secondary Section” is a named appendix or a front-matter section of the Document that deals exclusively with the relationship of the publishers or authors of the Document to the Document’s overall subject (or to related matters) and contains nothing that could fall directly within that overall subject. (Thus, if the Document is in part a textbook of mathematics, a Secondary Section may not explain any mathematics.) The relationship could be a matter of historical connection with the subject or with related matters, or of legal, commercial, philosophical, ethical or political position regarding them.
The “Invariant Sections” are certain Secondary Sections whose titles are designated, as being those of Invariant Sections, in the notice that says that the Document is released under this License. If a section does not fit the above definition of Secondary then it is not allowed to be designated as Invariant. The Document may contain zero Invariant Sections. If the Document does not identify any Invariant Sections then there are none.
The “Cover Texts” are certain short passages of text that are listed, as Front-Cover Texts or Back-Cover Texts, in the notice that says that the Document is released under this License. A Front-Cover Text may be at most 5 words, and a Back-Cover Text may be at most 25 words.
A “Transparent” copy of the Document means a machine-readable copy, represented in a format whose specification is available to the general public, that is suitable for revising the document straightforwardly with generic text editors or (for images composed of pixels) generic paint programs or (for drawings) some widely available drawing editor, and that is suitable for input to text formatters or for automatic translation to a variety of formats suitable for input to text formatters. A copy made in an otherwise Transparent file format whose markup, or absence of markup, has been arranged to thwart or discourage subsequent modification by readers is not Transparent. An image format is not Transparent if used for any substantial amount of text. A copy that is not “Transparent” is called “Opaque”.
Examples of suitable formats for Transparent copies include plain ASCII without markup, Texinfo input format, LaTeX input format, SGML or XML using a publicly available DTD, and standard-conforming simple HTML, PostScript or PDF designed for human modification. Examples of transparent image formats include PNG, XCF and JPG. Opaque formats include proprietary formats that can be read and edited only by proprietary word processors, SGML or XML for which the DTD and/or processing tools are not generally available, and the machine-generated HTML, PostScript or PDF produced by some word processors for output purposes only.
The “Title Page” means, for a printed book, the title page itself, plus such following pages as are needed to hold, legibly, the material this License requires to appear in the title page. For works in formats which do not have any title page as such, “Title Page” means the text near the most prominent appearance of the work’s title, preceding the beginning of the body of the text.
The “publisher” means any person or entity that distributes copies of the Document to the public.
A section “Entitled XYZ” means a named subunit of the Document whose title either is precisely XYZ or contains XYZ in parentheses following text that translates XYZ in another language. (Here XYZ stands for a specific section name mentioned below, such as “Acknowledgements”, “Dedications”, “Endorsements”, or “History”.) To “Preserve the Title” of such a section when you modify the Document means that it remains a section “Entitled XYZ” according to this definition.
The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License.
- VERBATIM COPYING
You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3.
You may also lend copies, under the same conditions stated above, and you may publicly display copies.
- COPYING IN QUANTITY
If you publish printed copies (or copies in media that commonly have printed covers) of the Document, numbering more than 100, and the Document’s license notice requires Cover Texts, you must enclose the copies in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on the back cover. Both covers must also clearly and legibly identify you as the publisher of these copies. The front cover must present the full title with all words of the title equally prominent and visible. You may add other material on the covers in addition. Copying with changes limited to the covers, as long as they preserve the title of the Document and satisfy these conditions, can be treated as verbatim copying in other respects.
If the required texts for either cover are too voluminous to fit legibly, you should put the first ones listed (as many as fit reasonably) on the actual cover, and continue the rest onto adjacent pages.
If you publish or distribute Opaque copies of the Document numbering more than 100, you must either include a machine-readable Transparent copy along with each Opaque copy, or state in or with each Opaque copy a computer-network location from which the general network-using public has access to download using public-standard network protocols a complete Transparent copy of the Document, free of added material. If you use the latter option, you must take reasonably prudent steps, when you begin distribution of Opaque copies in quantity, to ensure that this Transparent copy will remain thus accessible at the stated location until at least one year after the last time you distribute an Opaque copy (directly or through your agents or retailers) of that edition to the public.
It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.
- MODIFICATIONS
You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version:
- Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission.
- List on the Title Page, as authors, one or more persons or entities responsible for authorship of the modifications in the Modified Version, together with at least five of the principal authors of the Document (all of its principal authors, if it has fewer than five), unless they release you from this requirement.
- State on the Title page the name of the publisher of the Modified Version, as the publisher.
- Preserve all the copyright notices of the Document.
- Add an appropriate copyright notice for your modifications adjacent to the other copyright notices.
- Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below.
- Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document’s license notice.
- Include an unaltered copy of this License.
- Preserve the section Entitled “History”, Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled “History” in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence.
- Preserve the network location, if any, given in the Document for public access to a Transparent copy of the Document, and likewise the network locations given in the Document for previous versions it was based on. These may be placed in the “History” section. You may omit a network location for a work that was published at least four years before the Document itself, or if the original publisher of the version it refers to gives permission.
- For any section Entitled “Acknowledgements” or “Dedications”, Preserve the Title of the section, and preserve in the section all the substance and tone of each of the contributor acknowledgements and/or dedications given therein.
- Preserve all the Invariant Sections of the Document, unaltered in their text and in their titles. Section numbers or the equivalent are not considered part of the section titles.
- Delete any section Entitled “Endorsements”. Such a section may not be included in the Modified Version.
- Do not retitle any existing section to be Entitled “Endorsements” or to conflict in title with any Invariant Section.
- Preserve any Warranty Disclaimers.
If the Modified Version includes new front-matter sections or appendices that qualify as Secondary Sections and contain no material copied from the Document, you may at your option designate some or all of these sections as invariant. To do this, add their titles to the list of Invariant Sections in the Modified Version’s license notice. These titles must be distinct from any other section titles.
You may add a section Entitled “Endorsements”, provided it contains nothing but endorsements of your Modified Version by various parties—for example, statements of peer review or that the text has been approved by an organization as the authoritative definition of a standard.
You may add a passage of up to five words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one.
The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version.
- COMBINING DOCUMENTS
You may combine the Document with other documents released under this License, under the terms defined in section 4 above for modified versions, provided that you include in the combination all of the Invariant Sections of all of the original documents, unmodified, and list them all as Invariant Sections of your combined work in its license notice, and that you preserve all their Warranty Disclaimers.
The combined work need only contain one copy of this License, and multiple identical Invariant Sections may be replaced with a single copy. If there are multiple Invariant Sections with the same name but different contents, make the title of each such section unique by adding at the end of it, in parentheses, the name of the original author or publisher of that section if known, or else a unique number. Make the same adjustment to the section titles in the list of Invariant Sections in the license notice of the combined work.
In the combination, you must combine any sections Entitled “History” in the various original documents, forming one section Entitled “History”; likewise combine any sections Entitled “Acknowledgements”, and any sections Entitled “Dedications”. You must delete all sections Entitled “Endorsements.”
- COLLECTIONS OF DOCUMENTS
You may make a collection consisting of the Document and other documents released under this License, and replace the individual copies of this License in the various documents with a single copy that is included in the collection, provided that you follow the rules of this License for verbatim copying of each of the documents in all other respects.
You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document.
- AGGREGATION WITH INDEPENDENT WORKS
A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an “aggregate” if the copyright resulting from the compilation is not used to limit the legal rights of the compilation’s users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document.
If the Cover Text requirement of section 3 is applicable to these copies of the Document, then if the Document is less than one half of the entire aggregate, the Document’s Cover Texts may be placed on covers that bracket the Document within the aggregate, or the electronic equivalent of covers if the Document is in electronic form. Otherwise they must appear on printed covers that bracket the whole aggregate.
- TRANSLATION
Translation is considered a kind of modification, so you may distribute translations of the Document under the terms of section 4. Replacing Invariant Sections with translations requires special permission from their copyright holders, but you may include translations of some or all Invariant Sections in addition to the original versions of these Invariant Sections. You may include a translation of this License, and all the license notices in the Document, and any Warranty Disclaimers, provided that you also include the original English version of this License and the original versions of those notices and disclaimers. In case of a disagreement between the translation and the original version of this License or a notice or disclaimer, the original version will prevail.
If a section in the Document is Entitled “Acknowledgements”, “Dedications”, or “History”, the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title.
- TERMINATION
You may not copy, modify, sublicense, or distribute the Document except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense, or distribute it is void, and will automatically terminate your rights under this License.
However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, receipt of a copy of some or all of the same material does not give you any rights to use it.
- FUTURE REVISIONS OF THIS LICENSE
The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/.
Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License “or any later version” applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation. If the Document specifies that a proxy can decide which future versions of this License can be used, that proxy’s public statement of acceptance of a version permanently authorizes you to choose that version for the Document.
- RELICENSING
“Massive Multiauthor Collaboration Site” (or “MMC Site”) means any World Wide Web server that publishes copyrightable works and also provides prominent facilities for anybody to edit those works. A public wiki that anybody can edit is an example of such a server. A “Massive Multiauthor Collaboration” (or “MMC”) contained in the site means any set of copyrightable works thus published on the MMC site.
“CC-BY-SA” means the Creative Commons Attribution-Share Alike 3.0 license published by Creative Commons Corporation, a not-for-profit corporation with a principal place of business in San Francisco, California, as well as future copyleft versions of that license published by that same organization.
“Incorporate” means to publish or republish a Document, in whole or in part, as part of another Document.
An MMC is “eligible for relicensing” if it is licensed under this License, and if all works that were first published under this License somewhere other than this MMC, and subsequently incorporated in whole or in part into the MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated prior to November 1, 2008.
The operator of an MMC Site may republish an MMC contained in the site under CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC is eligible for relicensing.
ADDENDUM: How to use this License for your documents
To use this License in a document you have written, include a copy of the License in the document and put the following copyright and license notices just after the title page:
Copyright (C)yearyour name. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''.
If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the “with…Texts.” line with this:
with the Invariant Sections beinglist their titles, with the Front-Cover Texts beinglist, and with the Back-Cover Texts beinglist.
If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation.
If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.