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mnv9script
# MNV runtime support library
#
# Maintainer: The MNV Project <https://github.com/Project-Tick/Project-Tick>
# Last Change: 2026 Mar 10
export def IsSafeExecutable(filetype: string, executable: string): bool
if empty(exepath(executable))
return v:false
endif
var cwd = getcwd()
return get(g:, filetype .. '_exec', get(g:, 'plugin_exec', 0))
&& (fnamemodify(exepath(executable), ':p:h') !=# cwd
|| (split($PATH, has('win32') ? ';' : ':')->index(cwd) != -1
&& cwd != '.'))
enddef
def Redir(): string
if get(g:, 'netrw_suppress_gx_mesg', true)
if &srr =~# "%s"
return printf(&srr, has("win32") ? "nul" : "/dev/null")
elseif &srr =~# '>&\?$'
return &srr .. (has("win32") ? "nul" : "/dev/null")
else
return &srr .. (has("win32") ? "> nul" : "> /dev/null")
endif
endif
return ''
enddef
if has('unix')
if has('win32unix')
# Cygwin provides cygstart
if executable('cygstart')
export def Launch(args: string)
execute $'silent ! cygstart --hide {args} {Redir()}' | redraw!
enddef
elseif !empty($MSYSTEM) && executable('start')
# MSYS2/Git Bash comes by default without cygstart; see
# https://www.msys2.org/wiki/How-does-MSYS2-differ-from-Cygwin
# Instead it provides /usr/bin/start script running `cmd.exe //c start`
# Adding "" //b` sets void title, hides cmd window and blocks path conversion
# of /b to \b\ " by MSYS2; see https://www.msys2.org/docs/filesystem-paths/
export def Launch(args: string)
execute $'silent !start "" //b {args} {Redir()}' | redraw!
enddef
else
# imitate /usr/bin/start script for other environments and hope for the best
export def Launch(args: string)
execute $'silent !cmd /c start "" /b {args} {Redir()}' | redraw!
enddef
endif
elseif exists('$WSL_DISTRO_NAME') # use cmd.exe to start GUI apps in WSL
export def Launch(args: string)
const command = (args =~? '\v<\f+\.(exe|com|bat|cmd)>')
? $'cmd.exe /c start /b {args} {Redir()}'
: $'nohup {args} {Redir()} &'
execute $'silent ! {command}' | redraw!
enddef
else
export def Launch(args: string)
# Use job_start, because using !xdg-open is known not to work with zsh
# ignore signals on exit
job_start(split(args), {'stoponexit': ''})
enddef
endif
elseif has('win32')
export def Launch(args: string)
try
execute ':silent !start' args | redraw!
catch /^MNV(!):E371:/
echohl ErrorMsg
echom "dist#mnv9#Launch(): can not start" args
echohl None
endtry
enddef
else
export def Launch(dummy: string)
echom 'No common launcher found'
enddef
endif
var os_viewer = null_string
# Git Bash
if has('win32unix')
# (cyg)start suffices
os_viewer = ''
# Windows
elseif has('win32')
os_viewer = '' # Use :!start
# WSL
elseif executable('explorer.exe')
os_viewer = 'explorer.exe'
# Linux / BSD
elseif executable('xdg-open')
os_viewer = 'xdg-open'
# MacOS
elseif executable('open')
os_viewer = 'open'
endif
def Viewer(): string
# g:Openprg could be a string of program + its arguments, test if first
# argument is executable
var user_viewer = get(g:, "Openprg", get(g:, "netrw_browsex_viewer", ""))
# Take care of an off-by-one check for "for" too
if executable(trim(user_viewer))
return user_viewer
endif
var args = split(user_viewer, '\s\+\zs')
var viewer = get(args, 0, '')
for arg in args[1 :]
if executable(trim(viewer))
return user_viewer
endif
viewer ..= arg
endfor
if os_viewer == null
echoerr "No program to open this path found. See :help Open for more information."
endif
return os_viewer
enddef
export def Open(file: string)
# disable shellslash for shellescape, required on Windows #17995
if exists('+shellslash') && &shellslash
&shellslash = false
defer setbufvar('%', '&shellslash', true)
endif
if &shell == 'pwsh' || &shell == 'powershell'
const shell = &shell
setlocal shell&
defer setbufvar('%', '&shell', shell)
endif
if has('unix') && !has('win32unix') && !exists('$WSL_DISTRO_NAME')
# Linux: using job_start, so do not use shellescape.
Launch($"{Viewer()} {file}")
else
# Windows/WSL/Cygwin: NEEDS shellescape because Launch uses '!'
Launch($"{Viewer()} {shellescape(file, 1)}")
endif
enddef
# Uncomment this line to check for compilation errors early
# defcompile
# mnv: ts=8 sts=2 sw=2 et
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