Absolute path and Token replacement

[Jarod42]

Testing token replacement (in pre/post buildcommand, custom rule, custom commands, ...), all paths are shown relative with every generator, even "%{file.abspath}". There is ! (i.e "%{file.path}") to explicit show absolute path.

I also see undocumented %[path] to explicitly spot path in command line (which allows to write path normally in command, and not relative to project).

i.e

location("solution") -- ensure premake.5.lua is not in same directory than project.

-- Strange
prebuildcommands { "{ECHO} %{cfg.buildtarget.abspath}" } -- bin/Debug/app.exe  -- relative to project location
prebuildcommands { "{ECHO} %{cfg.buildtarget.directory}" } -- bin/Debug               -- relative to project location
-- OK
prebuildcommands { "{ECHO} %{!cfg.buildtarget.abspath}" } -- _MAIN_SCRIPT_DIR .. /solution/ .. bin/debug/app.exe
prebuildcommands { "{ECHO} %{!cfg.buildtarget.directory}" } -- _MAIN_SCRIPT_DIR .. /solution/ .. bin/debug

-- write path relative to premake
prebuildcommands { "{ECHO} %[test]" } -- "../test"              -- and got (quoted) result relative to project location

-- WRONG
prebuildcommands { "{ECHO} %[%{cfg.buildtarget.abspath}]" } -- "../bin/debug/app.exe" -- relative to project location
prebuildcommands { "{ECHO} %[%{cfg.buildtarget.directory}]" } -- "../bin/debug"              -- relative to project location

-- Correct
prebuildcommands { "{ECHO} %[%{!cfg.buildtarget.abspath}]" } -- "bin/debug/app.exe" -- relative to project location
prebuildcommands { "{ECHO} %[%{!cfg.buildtarget.directory}]" } -- "bin/debug"              -- relative to project location 

I currently list 4 absolute paths:

• "%{file.directory}"
• "%{file.abspath}"
• "%{cfg.buildtarget.abspath}"
• "%{cfg.linktarget.abspath}"

Do we have some guideline?

local environ = table.shallowcopy(filecfg.environ)
environ.pathVars = { -- should be a premake function: p.xx.prepareEnvironment(environ, node)
    ["file.abspath"] = { absolute = true, token = node.abspath },
    ["file.directory"] = { absolute = true, token = path.getdirectory(node.abspath)},
    ["cfg.buildtarget.abspath"] = { absolute = true, token = cfg.buildtarget.abspath},
    ["cfg.linktarget.abspath"] = { absolute = true, token = cfg.linktarget.abspath},
}
local fcfg = p.context.extent(filecfg, environ)

Can be added for each generators, but doesn't seems clean.

Is .absolutepath needed (i.e use ! when required instead)?
Shouldn't we have %[!path]?