v3.0 : Generate "menuentries" in a separate file

GRUB shouldn't break anymore (#46)

• Update 41_snapshots-btrfs

Enhanced error handling :
- new function available: print_error
- if btrfs-progs is not present, print a error and exit

New options in etc/default/grub
- disable this script

Enhanced menuentries:
- menuentries is now store in new grub configfile (/boot/grub/grub.cfg)
- use new functions for make a menuentry: make_menu_entries and entry
- harmonize menuentry with matching version kernel&initramfs # initramfs-linux-fallback is include and not boot with intel-ucode if exist , same as original patch in GRUB for Arch Linux
- make a menuentry in Grub menu (grub.cfg) to load our configfile

Enhanced /boot detection:
- create two separate function for make menuentries, if /boot is on a separate partition, use function boot_separate, else, boot_bounded
- if no kernel found, print a message and exit
- if no initramfs found, print a message and exit

Delete function: boot_dir
No longer uses gettext_printf function of grub-mkconfig_lib

New function to detect kernel:
- add all original standard kernel
- verifying if kernel exist before to continue

New functionto detect initramfs:
- add all original standard initramfs
- verifying if initramfs exist before to continue

New function to detect microcode

New counter:
- add a counter to show a warning if the total menuentries made exceeds 250 entries

Purge some obsolete code

Size tabulation is now 4

v2.2

Support selecting snapper's config, default to 'root' (#41)

This fixes wrong descriptions when you have multiple snapper configurations.
Configure snapper's config via GRUB_BTRFS_SNAPPER_CONFIG variable (defaults to root).

Add systemd service configuration for grub updating (snapper)

• Add systemd service configuration for grub updating

This configuration file causes update-grub to be run after
Snapper's cleanup and timeline services are run by systemd

• Make invoked command more universal

• Note the need to run systemctl daemon-reload

fix Snapper id too long

fix Snapper id too long #36 (#37)

snapper's snapshot description support

hurray,

I am proud to announce you the development of snapper support
Thanks to all contributors, especially @maximbaz for their work.
A year that starts well

• Use snapper's snapshot description if available, fixes #34 (#35)

• List snapper's snapshot from all configs

• fix: Title format in grub-menu, that didn't work as expected

• and fix some words ...

new feature and fix

• Update the top-level subvolid from 0 to 5.
• fix typo
• fix issue that prevented the harmonize option to generate initrd lines
• add "Display name of microcode in menuentry when available"

Create only entries with matching version numbers and one small improvement

• adds an option to create only entries where the version number of the kernel and the initramfs match and it also considers the initramfs naming scheme found in Debian.
• small improvement to use a safer temporary directory for mounting the btrfs root

Fix : GRUB_BTRFS_LIMIT (Limit the number of snapshots populated in the GRUB menu.)

Fix : When a value =< 0, script stop correctly
Fix : When a value => 1, script stop when the value is reached

e.g :

• GRUB_BTRFS_LIMIT="0"
  script doesn't detect snapshot
• GRUB_BTRFS_LIMIT"1" or "2" "etc..."
  script will stop the snapshot detection when value is reached

Enhanced

• clean code
• add a option to : specific path to ignore during run grub-mkconfig
  e.g :

  Found Snapshot: 2016-03-31 10:26:52 var/lib/docker/btrfs/subvolumes/74040aee4fa

docker is not a real snapshot available to boot
add : GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker") to your /etc/default/grub
and this path will be skip during run grub-mkconfig

Warning : copy exactly the right path (var/lib/docker , not /var/lib/docker/), do not put the full path

v1.8.2

clean code