git update-git-for-windows: download ARM64 Git for Windows if applicable

If the /arm64/bin folder is present, we assume that the user has the ARM64 version of Git for Windows installed. When a new version is available, we'll then automatically download the ARM64 version. This is similar to the logic in git-wrapper.c in mingw-w64-git.

Signed-off-by: Dennis Ameling <[email protected]>

Author: dennisameling

git-extra/git-update-git-for-windows

@@ -211,7 +211,16 @@ update_git_for_windows () {
 	test -n "$quiet" && test "x$recently_seen" = "x$latest" && return
 
 	version=$(git --version | sed "s/git version //")
-	echo "Git for Windows $version (${bit}bit)" >&2
+	version_string="Git for Windows $version (${bit}bit)"
+	filename_for_download="$bit\-bit\.exe"
+
+	if [ -d "/arm64/bin" ]
+	then
+		version_string="Git for Windows $version (ARM64)"
+		filename_for_download="ARM64\.exe"
+	fi
+
+	echo $version_string >&2
 	if test -z "$testing" && test "$latest" = "$version"
 	then
 		echo "Up to date" >&2
@@ -233,7 +242,7 @@ update_git_for_windows () {
 	releases=$(http_get $releases_url/latest) || return
 	download=$(echo "$releases" |
 		grep '"browser_download_url": "' |
-		grep "$bit\-bit\.exe" |
+		grep "$filename_for_download" |
 		sed -E 's/.*": "([^"]*).*/\1/')
 	filename=$(echo "$download" | sed -E 's/.*\/([^\/]*)$/\1/')
 	name="$(echo "$releases" | sed -n 's/^  "name": "\(.*\)",$/\1/p')"