Merge 80a98b3d2a into 84c6914a9b

Cribbed directly from the Element Flatpak's .gitignore file at
https://github.com/flathub/im.riot.Riot/blob/master/.gitignore, simply
because Element is a pretty popular application.

Note in particular that this covers all directories that will be
created by the Flatpak tutorial's suggested `flatpak-builder` command:
https://docs.flatpak.org/en/latest/first-build.html#build-and-install

`repo` is the OSTree repository that the built Flatpak will be
"published" to for testing, `.flatpak-builder` is an internal build
directory, and `builddir` is another, user-specified build directory.

C++.gitignore

@@ -49,14 +49,14 @@ CMakeFiles/
 CMakeCache.txt
 cmake_install.cmake
 Makefile
-install_manifest.txt
+install_manifest.txt 
 compile_commands.json
 
 # Temporary files
-*.tmp
-*.log
-*.bak
-*.swp
+*.tmp 
+*.log 
+*.bak 
+*.swp 
 
 # vcpkg
 vcpkg_installed/
@@ -66,4 +66,4 @@ vcpkg_installed/
 
 # test output & cache
 Testing/
-.cache/
+.cache/

Global/macOS.gitignore

@@ -1,6 +1,5 @@
 # General
 .DS_Store
-.localized
 __MACOSX/
 .AppleDouble
 .LSOverride

Maven.gitignore

@@ -7,7 +7,7 @@ release.properties
 dependency-reduced-pom.xml
 buildNumber.properties
 .mvn/timing.properties
-# https://maven.apache.org/tools/wrapper/#Usage_with_or_without_Binary_JAR
+# https://maven.apache.org/wrapper/#usage-without-binary-jar
 .mvn/wrapper/maven-wrapper.jar
 
 # Eclipse m2e generated files

Nix.gitignore

@@ -4,6 +4,3 @@ result-*
 
 # Ignore automatically generated direnv output
 .direnv
-
-# Ignore NixOS interactive test driver history
-**/.nixos-test-history

TeX.gitignore

@@ -75,11 +75,6 @@ acs-*.bib
 # comment
 *.cut
 
-# context
-*.tuc
-*.tui
-*.tuo
-
 # cprotect
 *.cpt
 

community/Linux/Flatpak.gitignore

@@ -0,0 +1,3 @@
+.flatpak-builder
+builddir
+repo