Remove awful.{spawn.,}pread (#184)

Signed-off-by: Uli Schlachter <psychon@znc.in>

lib/awful/init.lua

@@ -29,9 +29,9 @@ util.spawn_with_shell = function(...)
    return spawn.with_shell(...)
 end
 
-util.pread = function(...)
-   util.deprecate("awful.spawn.pread")
-   return spawn.pread(...)
+util.pread = function()
+    util.deprecate("Use io.popen() directly or look at awful.spawn.easy_async() "
+            .. "for an asynchronous alternative")
 end
 
 return

lib/awful/spawn.lua

@@ -276,23 +276,6 @@ function spawn.read_lines(input_stream, line_callback, done_callback, close)
     start_read()
 end
 
---- Read a program output and return its output as a string.
--- @tparam string cmd The command to run.
--- @treturn string A string with the program output, or the error if one
---   occured.
-function spawn.pread(cmd)
-    if cmd and cmd ~= "" then
-        local f, err = io.popen(cmd, 'r')
-        if f then
-            local s = f:read("*all")
-            f:close()
-            return s
-        else
-            return err
-        end
-    end
-end
-
 capi.awesome.connect_signal("spawn::canceled" , spawn.on_snid_cancel   )
 capi.awesome.connect_signal("spawn::timeout"  , spawn.on_snid_cancel   )
 capi.client.connect_signal ("manage"          , spawn.on_snid_callback )