nixos/x11: Be more defensive when removing XCOMPOSECACHE
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@ -70,8 +70,12 @@ let
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# Speed up application start by 50-150ms according to
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# http://kdemonkey.blogspot.nl/2008/04/magic-trick.html
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compose_cache="''${XCOMPOSECACHE:-$HOME/.compose-cache}"
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rm -rf "$compose_cache"
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mkdir -p "$compose_cache"
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# To avoid accidentally deleting a wrongly set up XCOMPOSECACHE directory,
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# defensively try to delete cache *files* only, following the file format specified in
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# https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/modules/im/ximcp/imLcIm.c#L353-358
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# sprintf (*res, "%s/%c%d_%03x_%08x_%08x", dir, _XimGetMyEndian(), XIM_CACHE_VERSION, (unsigned int)sizeof (DefTree), hash, hash2);
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${pkgs.findutils}/bin/find "$compose_cache" -maxdepth 1 -regextype posix-extended -regex '.*/[Bl][0-9]+_[0-9a-f]{3}_[0-9a-f]{8}_[0-9a-f]{8}' -delete
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unset compose_cache
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# Work around KDE errors when a user first logs in and
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