Two additional sets of paths are now added to the default list of well
known paths: '$HOME/{bin,sbin}' and '/opt/{homebrew,local}/{bin,sbin}'.
- '$HOME/{bin,sbin}': Most users have custom scripts in '$HOME/bin'
anyway, we might as well honor those. '$HOME/sbin' is not really common,
but we can keep it for consistency.
- '/opt/{homebrew,local}/{bin,sbin}': With Homebrew changing default
installation location in macOS on Apple Silicon which will eventually
become ubiquitous, we have a good reason to add these paths by default.
While at it, we also honor MacPorts installation.
In all cases, we add them _iff_ the paths actually exist, not otherwise.
This has the side effect of a newly installed program not available
immediately in the '$path' in a mint fresh system (because of the fact
that '/opt/{homebrew,local}/{bin,sbin}' won't exist initially) until the
shell is reloaded. But that's a minor inconvenience to keep the '$path'
from getting unnecessarily bloated.
In some cases TMPDIR may not be set, in which case it could cause issues
for zsh modules.
This change was prompted by issue #1331.
Also when creating a missing TMPDIR, use mkdir --mode=700 instead
of creating the directory and then chmoding it afterward.
Debian based systems have `lesspipe`, without '.sh' suffix.
Since `$commands` is an associative array, we do index search and set
the input preprocessor on first match.
Only set up environment for the top-level shell, and allow it to be
inherited normally.
A top level shell is usually a login shell, but can also be a
non-interactive, non-login shell in certain cases, such as when
executing an SSH remote command.
Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
