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If you want to submit improvements to the FPC or Lazarus code, you need to submit a patch which developers can easily merge.
Exceptions:
- .po translation files should be sent as whole files
- new files should be sent as whole files, with instructions where they should be placed
- 2Platform differences
- 7Applying a patch
- 7.2A patch made with 'git format-patch'
Requirements
You need the trunk/development version of Lazarus (or FPC). You can get Lazarus using either SVN or Git.
- SVN: Getting Lazarus SVN development version. This is the native repository.
- Git: Git mirrors and Lazarus Git-svn. Lazarus is mirrored in GitHub. Git can also use SVN server directly with git-svn link.
Warning:If you submit patches, do not base them on stable versions of Lazarus/FPC. Typically the development version is very different from stable versions as many improvements and fixes have been applied by the developers
Platform differences
The instructions later assume you have opened a command prompt and moved (cd) to the directory of the repository. Here are the details :
Windows
Assuming you checked out Lazarus into C:lazarus, open command prompt (cmd.exe) and type 'cd lazarus'.
*nix systems
Assuming you checked out Lazarus into ~/lazarus, open terminal and type 'cd ~/lazarus'.
Creating a patch using SVN
This includes all changed files in the whole SVN repository.
You can also define the individual files, to make sure no garbage is included, eg. :
Note: If using TortoiseSVN on Windows, you can select the folder where Lazarus was checked out in Windows Explorer then right click to select TortoiseSVN->Create Patch..
See also TortoiseSvn#Troubleshooting if you have problems.
Creating a patch using Git
First, develop your code in a separate branch!While your development branch is active, you can create patches of all your local commits by :
It creates a set of patches named like '0001-CommitMsg.patch', '0002-CommitMsg.patch' and so on.
If you want all the changes in one patch, either combine the commits using 'git rebase -i ..' or use the following command :
Html Editor Gui
Note: 'master' branch follows the SVN trunk by default when using git-svn link.However the mirror repository in GitHub uses 'upstream' branch instead.Then you must replace 'master' with 'upstream' in the above commands.
Submitting the patch
Now you have a patch. I'd suggest to look the file over to see if it looks ok (no unexpected changes).
The recommended way to submit a patch is through the bug tracker, see How do I create a bug report for details. If there is a report for the issue your patch fixes, use that, otherwise create a new issue. Upload the file to attach it to the issue.
Using a forked Git repository directly
It is possible to use Git in a distributed manner also for Lazarus development.At least developers JuhaManninen and Alexander Klenin ('Ask') are ready to accept code in a Git repository.
In practice the repository must be forked from the Lazarus mirror in GitHub.The code must be in a separate branch and rebased against 'upstream' branch.This is not tested yet, we can add more details here when somebody actually forks the repo and creates code.
The limitation of this model is that the code must belong to the area of expertise of the developers working with Git.If the code is outside that area, you can still use Git but you must create patches and send them to bug tracker.
Applying a patch
This explains how to apply somebody else's patch to your local repository. You can test the patch by using the --dry-run toggle switch like this:
The output of the patch program will be identical to the actual patching, only it does not alter the sourcecode files. Very handy for testing, without the possibility to screw up your source.
A patch made with 'svn diff'
To do the final patching, use the following commandline:
If that doesn't work because the path layout of your environment is different from the environment where the patch was created, you can tell patch to strip out all path information:
Any GUI tool for diffs on Windows can handle these patches, too, including TortoiseMerge.
A patch made with 'git format-patch'
Git
Git itself applies the patch like this :
patch
The 'patch' command now supports git format patches with -p1. This is tested with patch v.2.6.1 on Linux, old versions may not support it.
'patch' is available for Windows, too, but there are also GUI tools for the job.
TortoiseMerge
TortoiseMerge supports the Git format patch without problems.It is installed together with Tortoise SVN but is not integrated in explorer. It must be opened from the Start menu.
ToDo: add more GUI tools that support Git format patches
Troubleshooting
Hesston baler 4590 manual. Finally, patches may have a Unix/Linux line ending (LF) while your local file has Windows (CR+LF) line endings or vice versa. You'll have to convert the patch file before applying on Windows at least, as the supplied patch.exe is picky about line endings.
On Windows, the patch.exe supplied with FPC/Lazarus is very picky; you may have better luck with the patch.exe supplied by Git:
.. or the svn patch command available since SVN 1.7.
See also
- How do I create a bug report general information on submitting bugs, what should be covered in a bug report, and using the bug tracker.
- Tips on writing bug reports detailed information on what should be covered in a bug report.
- Database bug reporting Specific info and sample programs for database bugs
Retrieved from 'https://wiki.lazarus.freepascal.org/index.php?title=Creating_A_Patch&oldid=136602'
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Cons:
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Pros:
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- Cross-platform - versions available for Windows, Linux and Mac OS.
- Easy way to export your schema and perform Automatic Database Tuning with EverSQL
Cons:
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Price: Starts at $199.00
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Pros:
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- Free to download, licensed under GPL.
- Cross platform - versions available for Windows, Linux and Mac OS.
- Visual schema and query builder.
- This is the only SQL client which is supported and developed by MySQL, so you can be sure that it will contain all recent features to match the updates for MySQL's server.
- Allows optimizing SQL queries directly from the IDE, using a plugin developed by EverSQL.
Cons:
- The software is sometimes buggy some users report software crashes.
- Sometimes large queries can’t be stopped and have to be forcefully killed. In some cases, the entire application has to be killed.
Price: Free.
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Pros:
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- Free to use - Licensed under GNU GPL.
- Portable version is available for download, so you can use it without administrative privileges, nor requiring installation.
- Full database user management and privileges management options.
- Automate connections via command line utility.
- Ability to connect to MySQL database via an SSH tunnel, in case you don’t have the default port open for remote connections.
- Great syntax checks and auto completion features.
- Can work with Linux distributions, but will require the Wine platform
Cons:
Form Gui Editor Patch 1
- Some users are reporting sudden crashes / bugs, but nothing that significantly interrupts the daily usage.
- Requires Wine for Linux.
- No official support for Mac OS.
Price: Free
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Pros:
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Cons:
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Price: up to $249.95.
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Pros:
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- Visual schema and query builders.
- Cross platform - Windows, Linux and Mac OS versions are available.
- Syntax completion and checker.
- The premium version allows collaboration with team mates - share queries, connections and more.
Cons:
- High price point for the professional version.
- Uses Wine to be executed on Linux, which slows down the IDE.
- Some of the use cases require opening a new tab / window, which users report as a cumbersome process.
Price: up to $259.
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Pros:
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Cons:
- High price point for the professional version.
- Some users report occasional software crashes.
- Lack of support for databases other than MySQL.
- No native support for Linux or Mac.
- No drag and drop support between multiple tabs.
Price: Up to $299.