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path for fonts ($prefix/fonts). * grub-core/kern/corecmd.c (grub_core_cmd_insmod): Unify condition for checking if string is a path. * grub-core/normal/main.c (features): Add feature_default_font_path. * util/grub-mkconfig.in: Skip mangling of GRUB_FONT into GRUB_FONT_PATH. * util/grub.d/00_header.in: Use default directory if possible. * util/grub-install.in: Install unicode.pf2.
All executable files in this directory are processed in shell expansion order. 00_*: Reserved for 00_header. 10_*: Native boot entries. 20_*: Third party apps (e.g. memtest86+). The number namespace in-between is configurable by system installer and/or administrator. For example, you can add an entry to boot another OS as 01_otheros, 11_otheros, etc, depending on the position you want it to occupy in the menu; and then adjust the default setting via /etc/default/grub.