fix problem with path name encoding on Windows #54

	name: MSYS2

	on: push

	jobs:
	msys2_mingw64:
	runs-on: windows-2022
	defaults:
	run:
	shell: msys2 {0}
	steps:
	# Checks-out the repository under $GITHUB_WORKSPACE.
	- uses: actions/checkout@v4
	- uses: msys2/setup-msys2@v2
	with:
	msystem: mingw64
	update: true
	install: >-
	git
	mingw-w64-x86_64-catch
	mingw-w64-x86_64-cmake
	mingw-w64-x86_64-gcc
	mingw-w64-x86_64-glfw
	mingw-w64-x86_64-libwebp
	mingw-w64-x86_64-make
	mingw-w64-x86_64-ninja
	mingw-w64-x86_64-pkg-config
	- name: Build
	run: \|
	export MSYSTEM=MINGW64
	export CXX=g++
	export CC=gcc
	cd "$GITHUB_WORKSPACE"
	mkdir build
	cd build
	cmake ../
	cmake --build . -j2
	- name: Tests
	run: \|
	export MSYSTEM=MINGW64
	cd "$GITHUB_WORKSPACE"/build
	ctest -V
	- name: Build with statically linked standard libraries
	run: \|
	export MSYSTEM=MINGW64
	export CXX=g++
	export CC=gcc
	cd "$GITHUB_WORKSPACE"
	mkdir build_static_std_libs
	cd build_static_std_libs
	cmake ../ -DENABLE_LTO=ON -DENABLE_STATIC_STANDARD_LIBRARIES=ON
	cmake --build . -j2
	- name: Tests of build with statically linked standard libraries
	run: \|
	export MSYSTEM=MINGW64
	cd "$GITHUB_WORKSPACE"/build_static_std_libs
	ctest -V
	- name: Gather build artifacts
	run: \|
	export MSYSTEM=MINGW64
	cd "$GITHUB_WORKSPACE"
	mkdir artifacts
	./ci/copy-dll-dependencies.sh build_static_std_libs/webp-viewer/webp-viewer.exe artifacts/
	cp readme.md artifacts/
	cp changelog.md artifacts/
	cp documentation/third-party.md artifacts/
	- name: Upload artifacts
	uses: actions/upload-artifact@v4
	with:
	name: webp-viewer-windows-msys2
	path: \|
	artifacts/*

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