diff -r 11ae9103f59d -r 77cd7b8fb6a6 path.lua
--- a/path.lua	Mon Jul 06 12:35:23 2020 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,113 +0,0 @@
-
---@module path
-local path={}
-
-local tuple=require("tuple")
-local lfs=require("lfs")
-local err=require("err")
-local config=require("config")
-
-local sep=config.dirsep
-
-function path.join(p, f)
-    if p=="" then
-        return f
-    else
-        return p..sep..f
-    end
-end
-
-function path.dirbasename(p)
-    local d, b = string.match(p,
-        "^(.*)"..sep.."+([^"..sep.."]+)"..sep.."*$")
-    if not b then
-        return "", p
-    else
-        return d, b
-    end
-end
-
-function path.dirname(p)
-    return tuple.fst(dirbasename(p))
-end
-
-function path.dirname_slash(p)
-    local dn=dirname(p)
-    if dn=="" then
-        return dn
-    else
-        return dn..sep
-    end
-end
-
-function path.basename(p)
-    return tuple.snd(dirbasename(p))
-end
-
-function path.rmext(p)
-    return string.gsub(p, "%.[^.]*$", "")
-end
-
--- would rather do this as an iterator, but can't
--- coroutine.yield from gsub handler
-function path.split(p)
-    local t={}
-    local head=""
-    local s, p2 = string.match(p, "^("..sep.."+)(.*)$")
-    if s then
-        table.insert(t, "/.") -- root
-        p=p2
-    end
-    string.gsub(p, "([^"..sep.."]+)", --..sep.."+", 
-            function(d) table.insert(t, d); end)
-    return t
-end
-
---[[
-function path.parts(p)
-    local s={i=1, t=split(p)}
-    local function g(s)
-        local v=s.t[s.i]
-        s.i=s.i+1
-        return v
-    end
-    return g, s
-end
-
-function path.makepath(p, head)
-    head=head or ""
-    for d in parts(p) do
-        head=head..d
-        local a=lfs.attributes(head)
-        if not a then
-            local success, e = lfs.mkdir(head)
-            if not success then
-                err.file(head, e)
-            end
-        elseif a.mode~="directory" then
-            err.file(head, "not a directory")
-        end
-        head=head..sep
-    end
-end
-]]
-
-function path.simplify(p)
-    local capts={}
-    local start=string.match(p, "^(/)")
-    string.gsub(p, "([^/]+)",
-    function(e)
-        if e==".." and #capts > 1 then
-            capts[#capts]=nil
-        elseif e~="." then
-            table.insert(capts, e)
-        end  
-    end)
-    return (start or "")..table.concat(capts, "/")
-end
-
-function path.to_root(p)
-    return string.rep("../",#(path.split(p))-1)
-end
-
-return path