谢谢反馈

1.请提供一下~/.config/mimeapps.list文件，我们用于分析xml文件默认程序问题；
2.你所遇到的是否还有其他扩展名文件存在该问题，请一并反馈，我们好一起定位修复。

[Default Applications]
application/x-gnome-saved-search=dde-file-manager.desktop
application/x-xpinstall=thunderbird.desktop
application/ogg=deepin-movie.desktop
application/x-flac=deepin-movie.desktop
image/x-gray=deepin-image-viewer.desktop
image/x-icb=deepin-image-viewer.desktop
image/x-ico=deepin-image-viewer.desktop
image/x-png=deepin-image-viewer.desktop
image/x-portable-anymap=deepin-image-viewer.desktop
image/x-portable-bitmap=deepin-image-viewer.desktop
image/x-portable-graymap=deepin-image-viewer.desktop
image/x-portable-pixmap=deepin-image-viewer.desktop
image/x-xbitmap=deepin-image-viewer.desktop
image/x-xpixmap=deepin-image-viewer.desktop
image/x-pcx=deepin-image-viewer.desktop
image/svg+xml-compressed=deepin-image-viewer.desktop
image/vnd.wap.wbmp=deepin-image-viewer.desktop
x-scheme-handler/http=google-chrome.desktop
x-scheme-handler/ftp=google-chrome.desktop
x-scheme-handler/https=google-chrome.desktop
text/html=google-chrome.desktop
text/xml=google-chrome.desktop
text/xhtml_xml=google-chrome.desktop
text/xhtml+xml=google-chrome.desktop
text/plain=deepin-editor.desktop
image/jpeg=deepin-image-viewer.desktop
application/octet-stream=deepin-compressor.desktop
image/png=deepin-image-viewer.desktop
application/vnd.kde.kxmlguirc=com.visualstudio.code.desktop
application/xml=deepin-editor.desktop

修改 ~/.config/mimeapps.list   text/xml=deepin-editor.desktop  此问题得到解决

发现各新问题  dedit 不能打开某些后缀名的文本文件 比如init.rc  把后缀名改成txt才可以打开
https://bbs.deepin.org/user/253456

.rc没有列入dedit白名单，暂时不支持，你可以用gedit啊