Merge pull request #206 from Tieske/verbose_flag

adds flag `--verbose` as equivalent for config file `verbose = true`

2 files changed, 10 insertions, 1 deletions

diff --git a/src/luarocks/command_line.lua b/src/luarocks/command_line.lua
index 63b918b5..059b7a1c 100644
--- a/src/luarocks/command_line.lua
+++ b/src/luarocks/command_line.lua
@@ -61,6 +61,12 @@ function run_command(...)
 
    local command
    
+   if flags["verbose"] then   -- setting it in the config file will kick-in earlier in the process
+      cfg.verbose = true
+      local fs = require("luarocks.fs")
+      fs.verbose()
+   end
+
    if flags["version"] then
       util.printout(program.." "..cfg.program_version)
       util.printout(program_description)
diff --git a/src/luarocks/fs.lua b/src/luarocks/fs.lua
index 2d799da2..b281eb14 100644
--- a/src/luarocks/fs.lua
+++ b/src/luarocks/fs.lua
@@ -14,7 +14,9 @@ local cfg = require("luarocks.cfg")
 local pack = table.pack or function(...) return { n = select("#", ...), ... } end
 local unpack = table.unpack or unpack
 
-if cfg.verbose then -- patch io.popen and os.execute to display commands in verbose mode
+local old_popen, old_exec
+_M.verbose = function()    -- patch io.popen and os.execute to display commands in verbose mode
+  if old_popen or old_exec then return end
   old_popen = io.popen
   io.popen = function(one, two)
     if two == nil then
@@ -36,6 +38,7 @@ if cfg.verbose then -- patch io.popen and os.execute to display commands in verb
     return unpack(code, 1, code.n)    
   end
 end
+if cfg.verbose then _M.verbose() end
 
 local function load_fns(fs_table)
    for name, fn in pairs(fs_table) do