ref: 94b1d3f0ad587b6e507ff872eb8562466e3af21a
parent: 6b0150764cc579c3764e6ed2a6db1237f11577de
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Thu Dec 28 13:10:41 EST 2023
mk: Various improvements
Variables are lists, just as in rc,
so preserve emptry strings ('')
in variables properly: FOO='' bar baz
should result in FOO=('' bar baz) in
the environment, while FOO=
becomes a emptry list FOO=().
Get rid of the Evy struct, the environment
can be represented as just an array
of Symtab pointers, also meaning the
value can never be out of sync.
Embedd the name string in Symtab struct.
It is immutable and dont require
the caller to strdup() the name.
Make Word's immutable, embedding the
string value in the Word struct.
This avoids alot of extra allocations.
Provide a Strdup() function that handles
allocation error.
Handle variable overrides from the
command line internally, avoiding the
maketmp() file.
When executing a recipe, pass the body
using the -c flag to rc, avoiding
a pipe() and fork(). This also has
the advntage that rc can optimize the
script as it sees it in its entirety
and avoid fork() down the line.
Make sure not to leak file-descriptors
into sub-processes.
Do an attempt at freeing memory
(mostly for Arc's and environment values).