[L4XB]

Link to the application or project's homepage

https://umbraco.com/ (source: https://github.com/umbraco/Umbraco-CMS)

Reasons for making this change

The last rule of community/DotNet/Umbraco.gitignore, !**/umbraco/Data/packages ("include default location for packages"), has no effect. **/umbraco/* a few lines above ignores umbraco/Data, and git cannot re-include a path whose parent directory is excluded. So the packages folder is ignored like the rest of umbraco/Data.

#4314 fixed the same problem for !**/umbraco/models by changing **/umbraco/ to **/umbraco/*. That works for models, a direct child of umbraco/, but Data/packages is one level deeper and still sits under an excluded directory.

The fix re-includes umbraco/Data/, ignores its contents again, and then re-includes packages and the files in it:

!**/umbraco/Data/
**/umbraco/Data/*
!**/umbraco/Data/packages
!**/umbraco/Data/packages/*

The last line follows the existing !**/App_Data/[Pp]ackages/* rules in the same template. Without it, **/[Pp]ackages/* from VisualStudio.gitignore, which the template asks to be placed before its own rules, still hides the files inside packages.

What git does with each path, in a fresh repository (git ls-files -o --exclude-standard plus git check-ignore -v, git 2.50.1). Rows marked with * change:

path	before	after
umbraco/Data/packages/package.zip *	ignored by **/umbraco/*	tracked
umbraco/Data/packages/MyPackage/package.xml *	ignored by **/umbraco/*	tracked
umbraco/models/Article.generated.cs	tracked	tracked
umbraco/Data/Umbraco.sqlite.db	ignored	ignored (**/umbraco/Data/*)
umbraco/Data/TEMP/DistCache/x.txt	ignored	ignored (**/umbraco/Data/*)
umbraco/Logs/log.json, umbraco/mediacache/a.jpg	ignored	ignored (**/umbraco/*)
wwwroot/umbraco/backoffice.js	ignored	ignored

The result is the same with VisualStudio.gitignore placed before the template. With only the first three new lines, the two packages files stay ignored there by VisualStudio.gitignore's **/[Pp]ackages/*.

Links to documentation supporting these rule changes

• gitignore documentation, https://git-scm.com/docs/gitignore: "It is not possible to re-include a file if a parent directory of that file is excluded." Its example "exclude everything except directory foo/bar" uses the same pattern (/*, !/foo, /foo/*, !/foo/bar).
• Umbraco defines the folder as Constants.SystemDirectories.Packages = Data + "/packages", "The packages folder path for installed packages", where Data is umbraco/Data: https://github.com/umbraco/Umbraco-CMS/blob/2d4418b36f0e50a1234cc8d9781b8e749d67f42d/src/Umbraco.Core/Constants-SystemDirectories.cs#L76-L78

Merge and Approval Steps

• I have read the contribution guidelines and understand my PR will be closed if it doesn't meet these guidelines

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