all of these echo helpers are essentially 'logging' functions with output
always intended for stdout/stderr. lack of explicit stdout/stderr direction
means that their output could be captured unintentionally should they be
used within a function designed to construct a string.
Gbp-Dch: Short
Closes: #952879
lack of stderr directed output for the `E:` prefix meant that it would
not appear alongside the message in some use cases
Gbp-Dch: Short
Closes: #952878
Avoid all of the duplication for each installer case
Note, what is done for the netboot case (which was previously missing)
still needs addressing
Gbp-Dch: Short
Closes: #952865
LB_DEBIAN_INSTALLER_GUI defines whether or not to provide the graphical
installer. the installer_debian-installer script pays attention to it and
does not download it if not wanted. the actual bootloaders however
(both grub2/loopback and syslinux) ignore it, which leaves broken and
unwanted menu entries. this fixes that.
Gbp-Dch: Short
Closes: #952890
available values currently are memtest86+|memtest86|none; "false" is
presumably handled for backwards compatibility
there is no need to handle this in individual scripts. the right place
to handle it is in Set_Defaults as now done
Gbp-Dch: Short
Closes: #952866
`false` and `none` make no sense as choices for this option. Here we
replace `false` with `none`, and remove `true`.
Note that `true` was treated as an alias for netinst (see the changes to
source_disk and and binary_disk).
For backwards compatibility we still allow `true` and `false` by converting
them to `netinst` and `none` respectively, whilst printing a warning to
encourage users to move to `netinst`/`none`.
Gbp-Dch: Short
Closes: #952864
including:
- spaces replaced with tabs for consistency
- alignment of `;;` in some case statements changed for consistency
Gbp-Dch: Short
Closes: #952857
`lb build` is a top level command and the one most users will want. listing
the secondary component build stages alongside it just confuses things.
here we clarify things by moving the second-level build stages to a
separate list.
Gbp-Dch: Short
Lyndon Brown