mara004

UNIX famously uses fork+exec to create processes, a simple API that is nevertheless quite tricky to use correctly and that comes with a bunch of problems. The alternative, spawn, as used by VMS, Windows NT and recently POSIX, fixes many of these issues but it overly complex and makes it hard to add new features.

prepare() is a proposed API to simplify process creation. When calling prepare(), the current thread enters “preparation state.” That means, a nascent process is created and the current thread is moved to the context of this process, but without changing memory maps (this is similar to how vfork() works). Inside the nascent process, you can configure the environment as desired and then call prep_execve() to execute a new program. On success, prep_execve() leaves preparation state, moving the current thread back to the parent's process context and returns (!) the pid of the now grownup child. You can also use prep_exit() to abort the child without executing a new process, it similarly returns the pid

(footnote order [^mono] [^wine_true] [^wine_maybe] [^wine_false])

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	# SPDX-FileCopyrightText: 2026 geisserml <geisserml@gmail.com>
	# SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause

	# This is essentially a copy of https://github.com/pypdfium2-team/pypdfium2/blob/11c67012f256abd3c402c47e9abe26bfbc3d182e/utils/dev/git_net_additions.py
	# Please check pypdfium2's main branch for possible updates.

	# Augment `git diff --numstat` with a delta column (net additions, i.e. additions-deletions), and sort the output by that column.
	# This helps maintainers analyze net growth (or degrowth) between refs on a per file basis, ordered by relevance, with the highest net additions shown first. (Author's note: AOTW, neither git itself, nor GitHub, nor any other tool I'm aware of seemed to offer that functionality.)
	# For completeness, this script also adds a churn column (absolute additions+deletions) as in `git diff --stat`. Validates the final result against `git diff --shortstat`.

	import re, sys

	pattern = sys.argv[1]
	out_pattern = sys.argv[2]
	string = sys.argv[3]

	match = re.search(pattern, string)
	result = out_pattern % match.groups()
	print(result, end="")

	class layereddict (dict):

	def __init__(self, layer, **kwargs):
	super().__init__(**kwargs)
	self._layer = layer

	def __missing__(self, key):
	return self._layer[key]

	# SPDX-FileCopyrightText: 2026 geisserml <geisserml@gmail.com>
	# SPDX-License-Identifier: MPL-2.0

	import stl # local

	from typing import TYPE_CHECKING
	if TYPE_CHECKING:
	from functools import cached_property as cached_prop_typehint
	else:
	def cached_prop_typehint(func):

	#! /usr/bin/env python3
	# SPDX-FileCopyrightText: 2026 mara004 <geisserml@gmail.com>
	# SPDX-License-Identifier: BSD-2-Clause

	import sys
	import shlex
	from pathlib import Path
	from importlib import import_module
	from importlib.metadata import entry_points

	# Dump your /usr/share/X11/locale/en_US.UTF-8/Compose below and save as ~/.XCompose
	<Multi_key> <minus> <numbersign> : "‑" U2011 # NONBREAKING HYPHEN

	# Four lines intentionally left blank




	# SPDX-FileCopyrightText: 2025 geisserml <geisserml@gmail.com>
	# SPDX-License-Identifier: MPL-2.0 OR GPL-3.0-or-later
	# Note that Ghostscript is AGPL-licensed, so this code is altogether affected by copyleft
	# Written with Ghostscript 9.56.1 on Fedora.

	# see also https://wiki.ubuntuusers.de/DVDs_manuell_rippen/#Komplette-Spur-rippen
	lsdvd /dev/sr0 # to show available tracks and their length
	mplayer dvd://n -dvd-device /dev/sr0 # to preview a track -- where n is the track number (1-based)
	mplayer dvd://n -dvd-device /dev/sr0 -v -dumpstream -dumpfile filename.vob # to rip track