trurl.c: clarify the --help text for --urlencode #953

	name: build

	on:
	push:
	branches: ["master"]
	pull_request:
	branches: ["master"]

	jobs:
	ubuntu:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	build:
	- name: default
	install_packages: valgrind
	test: test-memory
	- name: clang sanitizers
	install_packages: clang
	test: test
	make_opts: >
	CC=clang
	CFLAGS="-fsanitize=address,undefined,signed-integer-overflow -Wformat -Werror=format-security -Werror=array-bounds -g"
	LDFLAGS="-fsanitize=address,undefined,signed-integer-overflow -g"

	steps:
	- uses: actions/checkout@v4

	- name: install libcurl
	run: \|
	sudo apt-get update
	sudo apt-get install libcurl4-openssl-dev ${{ matrix.build.install_packages }}

	- name: code style check
	run: make checksrc

	- name: make
	run: make ${{ matrix.build.make_opts }}

	- name: sanity test
	run: ./trurl -v

	- name: test
	run: make ${{matrix.build.test}}

	cygwin:
	runs-on: windows-latest

	steps:
	- uses: actions/checkout@v4

	- name: install cygwin
	uses: cygwin/cygwin-install-action@master
	with:
	packages: curl, libcurl-devel, libcurl4, make, gcc-core, python39

	- name: make
	run: make

	- name: sanity test
	run: ./trurl -v

	- name: test
	run: make test

	macos:
	runs-on: macos-latest

	steps:
	- uses: actions/checkout@v4

	- name: make
	run: make

	- name: sanity test
	run: ./trurl -v

	- name: test
	run: make test

Provide feedback