bin/package: go POSIX

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Yes, we're finally abandoning the old Bourne shell so we can
use sane $(command substitutions) and the like. POSIX sh (with
tolerance for shell bugs) is very highly portable these days.
Even Solaris 10 has a POSIX shell, though not as /bin/sh.

bin/package, src/cmd/INIT/package.sh:
- Be nice: if we're on an obsolete or broken shell, try hard to
  escape to a good one. This should preserve the possibility to
  just run 'bin/package make' via ancient /bin/sh on Solaris 10.
  - Note: zsh without sh emulation is considered broken because
    $path, which we use, is linked to $PATH. You have to run it via
    a symlink named sh or via 'zsh --emulate sh' to disable this.
    Enabling emulation mode after initialisation will not work.
- More self-documentation cleanups and updates.
- Regenerate the text-only fallback version of the self-doc.
- Remove flat view functionality (no arch directory); it may have
  been broken for some time, but quite frankly I could not care
  less. It's yet more featuritis. Building in arch/ is fine.

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This commit is contained in:

Martijn Dekker 2021-12-15 04:53:47 +01:00

parent 1aa8f771d8

commit 9166545aa3

2 changed files with 622 additions and 872 deletions

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