94 lines
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94 lines
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<title>Justification For Yet Another Set Of Ignore Files - Stow</title>
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<link rel="prev" href="Types-And-Syntax-Of-Ignore-Lists.html#Types-And-Syntax-Of-Ignore-Lists" title="Types And Syntax Of Ignore Lists">
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This manual describes GNU Stow version 2.2.2
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(9 November 2015), a program for managing the installation of software
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packages.
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Software and documentation is copyrighted by the following:
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(C) 1993, 1994, 1995, 1996 Bob Glickstein <bobg+stow@zanshin.com>
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(C) 2000, 2001 Guillaume Morin <gmorin@gnu.org>
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(C) 2007 Kahlil (Kal) Hodgson <kahlil@internode.on.net>
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(C) 2011 Adam Spiers <stow@adamspiers.org>
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<a name="Justification-For-Yet-Another-Set-Of-Ignore-Files"></a>
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Previous: <a rel="previous" accesskey="p" href="Types-And-Syntax-Of-Ignore-Lists.html#Types-And-Syntax-Of-Ignore-Lists">Types And Syntax Of Ignore Lists</a>,
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Up: <a rel="up" accesskey="u" href="Ignore-Lists.html#Ignore-Lists">Ignore Lists</a>
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<h3 class="section">4.3 Justification For Yet Another Set Of Ignore Files</h3>
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<p>The reader may note that this format is very similar to existing
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ignore list file formats, such as those for <samp><span class="command">cvs</span></samp>, <samp><span class="command">git</span></samp>,
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<samp><span class="command">rsync</span></samp> etc., and wonder if another set of ignore lists is
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justified. However there are good reasons why Stow does not simply
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check for the presence of say, <samp><span class="file">.cvsignore</span></samp>, and use that if it
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exists. Firstly, there is no guarantee that a stow package would
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contain any version control meta-data, or permit introducing this if
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it didn't already exist.
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<p>Secondly even if it did, version control system ignore lists generally
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reflect <em>build-time</em> ignores rather than <em>install-time</em>, and
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there may be some intermediate or temporary files on those ignore
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lists generated during development or at build-time which it would be
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inappropriate to stow, even though many files generated at build-time
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(binaries, libraries, documentation etc.) certainly do need to be
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stowed. Similarly, if a file is <em>not</em> in the version control
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system's ignore list, there is no way of knowing whether the file is
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intended for end use, let alone whether the version control system is
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tracking it or not.
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<p>Therefore it seems clear that ignore lists provided by version control
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systems do not provide sufficient information for Stow to determine
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which files and directories to stow, and so it makes sense for Stow to
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support independent ignore lists.
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