Awesome WM won't start with my system language but it works with English. about awesome HOT 15 CLOSED

The error appears to come from /usr/share/lua/5.2/lgi/override/cairo.lua:673.

Can you paste it and its surrounding context?
Does commenting it fix or improve/change the issue for you? (as a workaround)

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   if cairo.version >= (info.since or 0) then
      local name = info[1]
      local obj = assert(cairo[name], name)
      obj._parent = info.parent
      if info.methods then
     -- Go through description of the methods and create functions
     -- from them.
     obj._method = {}
     local cprefix = 'cairo_' ..
        (info.cprefix or
         name:gsub('([%l%d])([%u])', '%1_%2'):lower() .. '_')
     local self_arg = { obj }
     for method_name, method_info in pairs(info.methods) do
        if cairo.version >= (method_info.since or 0) then
           method_info.name = 'cairo.' .. name .. '.' .. method_name
           method_info.addr = assert(                      <-- This line 673
          cairo._module[
             method_info.cname or (cprefix .. method_name)])
           if not method_info.static then
          table.insert(method_info, 1, self_arg)
           end
           method_info.ret = method_info.ret or ti.void
           obj._method[method_name] = core.callable.new(method_info)
        end
     end
      end

I don't know which lines to comment. :/

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Which one is line 673? (there are two assert statements in what you've pasted).

I don't know which lines to comment. :/

I've meant the assert statement that's causing problems.
But that won't help probably. You might have to debug it, e.g. add print statements there to see what's going on: what is different there when using LANG=C (or what you've used) compared to using your system settings.

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I wrote " <-- This line 673"

Sorry, my English is not good.Can you explain me what to do simply?

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I cannot help you much further. I was just trying to help you debug it.

The problem appears to be that some cairo module is not available:

> cairo._module[method_info.cname or (cprefix .. method_name)]

You could add the following code before the assert and then see what gets printed:

print(method_info)
print(cprefix)
print(method_name)

But you might want to wait for someone else to help with that - I might be on a totally wrong track.

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A big update: I don't need to use LC_ALL anymore, because just changing LC_CTYPE to english is working. Awesome starts and all programs are Turkish. :) But i don't know what is LC_CTYPE for?

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According to man locale it's for "Character classification and case conversion.".

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So it's not important so much? Anyway, at least it's working.:)

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I'm glad it's working for you!

It does not seem to be important, and probably triggers a bug somewhere, where upper-/lowercasing is an issue.

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I can reproduce this issue and it is not in awesome, but in lgi (as one could already guess before):

$ lua -e 'print(os.setlocale("tr_TR.UTF8")) ; print(require("lgi").cairo)' 
tr_TR.UTF8
lua: /usr/share/lua/5.1/lgi/override/cairo.lua:673: assertion failed!
stack traceback:
    [C]: in function 'assert'
    /usr/share/lua/5.1/lgi/override/cairo.lua:673: in main chunk
    [C]: in function 'require'
    /usr/share/lua/5.1/lgi/namespace.lua:176: in function </usr/share/lua/5.1/lgi/namespace.lua:148>
    (tail call): ?
    (command line):1: in main chunk
    [C]: ?

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And here is some more compact, self-standing example demonstrating the problem:

$ lua -e 'function f() s = "I" ; return s:lower() end ; print(os.setlocale("")) ; print(f()) ; print(os.setlocale("tr_TR.UTF8")) ; print(f()) '
de_DE.UTF-8
i
tr_TR.UTF8
I

(Technical details: lgi has the strings "ImageSurface" and "get_width" and it tries to generate the name of the corresponding C function which is cairo_image_surface_get_width. However, in a turkish locale it ends up with cairo_Image_surface_get_width. The following assertion failure is just the resulting "whoops, there is no such function"-error.)

@TaylanTatli Since you seem to know turkish, can you tell us why "i" is not the lower-case version of "I"?

I reported this issue to LGI and thus will close this one.
Upstream issue: lgi-devs/lgi#97

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http://en.wikipedia.org/wiki/Dotted_and_dotless_I

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You found the answer on wikipedia. :) That İ and ı are really problem for us. Lots of app lives problem with them. Thank you. :)

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This was now fixed in LGI upstream

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Thanks.

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