Meson mangles MSVC flags beginning with L if specified with a dash

Describe the bug

The /LINKREPRO:xxx flag is needed to compile a linker test case for Microsoft.

However, specifying it with a dash (-Dcpp_link_args=-LINKREPRO:msvc or cpp_link_args: '-LINKREPRO:MSVC') results in Meson thinking it's a library link flag, so it gets mangled into LINK_ARGS = "/LIBPATH:INKREPRO:MSVC".

To Reproduce

meson.build:

project('doxygen test', 'cpp', version : '0.1.0')

spede_inc = include_directories('include')

spede_src = [ 'src/spede.cpp' ]

spede_lib = library('spede', spede_src, include_directories: spede_inc, link_args: ['-LINKREPRO:MSVC'])

srcs/spede.cpp

#include<spede.h>

/**
 * \file spede.cpp
 *
 * This file contains the implementation of the king of comedy.
 */

/**
 * \mainpage The Vast Comedian Project
 *
 * \section intro Introduction
 *
 * The purpose of this project is to model every single comedian
 * who has ever lived.
 *
 * \section sched Project schedule
 *
 * There is no real estimate on when this will be finished.
 */

/**
 * \namespace Comedy
 *
 * This contains everything that is funny.
 */

namespace Comedy {

/**
 * Do all the delicate movements that lead to a comical sound
 * emanating from a person.
 *
 * \param force how hard to move the hand.
 * \return something or another
 */
int gesticulate(int force) {
    // FIXME add implementation.
    return 0;
}

Spede::Spede() : num_movies(100) {
}

void Spede::slap_forehead() {
    gesticulate(42);
}

}

Expected behavior

Compilation should succeed once the MSVC folder is created in the build folder.

system parameters

Is this a cross build or just a plain native build (for the same computer)? No
what operating system (e.g. MacOS Catalina, Windows 10, CentOS 8.0, Ubuntu 18.04, etc.) Windows 10 21H2
what Python version are you using e.g. 3.8.0 3.10.7
what meson --version 1.0.1
what ninja --version if it's a Ninja build 1.10.2

mesonbuild / meson

Meson mangles MSVC flags beginning with L if specified with a dash #11670