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"""
Somewhat minimal example demonstrating how the Python dropbox api has inconcistent UTF-8 handeling
for filenames and paths.

To simpelify upload of many files i let users copy their files to a upload folder under an
application specific dropox folder named upload. Then I download theese files to my server and makes
them availible to the application. 

My problem was that if filenames contains non ASCII characters like æøå I got an encoding error when
I tried to delete the file. The problem was resolved when i encoded f['path'] to utf-8, but I have

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               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "help()" to list help topics
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.2.0-prerelease+3952
 _/ |\__'_|_|_|\__'_|  |  Commit d0c2058 2013-10-06 19:08:09 UTC
|__/                   |  x86_64-w64-mingw32

julia>  abstract BTree

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function old_colon{T<:Integer}(start::T, step::T, stop::T)
    Range(start, step, max(0, div(stop-start+step, step)))
end

function new_colon{T<:Integer}(start::T, step::T, stop::T)
    len,rem = divrem(stop-start,step)
    Range(start, step, max(0, len+div(rem+step,step)))
end

function range_test_old()

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#!/bin/bash
gfortran -o $2 -fno-underscoring $1 libhgraph.a libg2c.so -L/usr/X11R6/lib64 -lX11

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Dealing with errno in c-APIs in Julia

Lots of C APIs that you might want to call from julia uses a special thread local global integer errno to indicate errors because C only allows one return value and does not provide exceptions to indicate errors. Usually the function interface will define a special return value to indicate an error, and let set errno to a number that represents an index into an array of standard error messages. Some functions, like unix strtoul, do not have a special value to indicate error, but says it will change errno to an appropriate value if an error is encountered. This will require a cautious programmer to set errno = 0; before calling the function and check if it is different from 0 after calling the function.

Example usage in c

errno = 0;
arg = strtoul (buf, NULL, 0);
if (errno)
    perror ("strtoul");

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src/e_j0.c:281:10: warning: variable 'p' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
        else if(ix>=0x40000000){p = pR2; q= pS2;}
                ^~~~~~~~~~~~~~
src/e_j0.c:283:6: note: uninitialized use occurs here
        r = p[0]+z*(p[1]+z*(p[2]+z*(p[3]+z*(p[4]+z*p[5]))));
            ^
src/e_j0.c:281:7: note: remove the 'if' if its condition is always true
        else if(ix>=0x40000000){p = pR2; q= pS2;}
             ^~~~~~~~~~~~~~~~~~
src/e_j0.c:273:17: note: initialize the variable 'p' to silence this warning

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module testsums
export sum5, sum5b, dosums

function sum5(scale, sa1, a1, sa2, a2, sa3, a3, sa4, a4, sa5, a5, out)
    for i=1:length(out)
        @inbounds out[i] = scale*(sa1*a1[i] + sa2*a2[i] + sa3*a3[i]
                                            + sa4*a4[i] + sa5*a5[i])
    end
end

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const _interfaces = Dict{Function,Vector{DataType}}()

function addInterface(d::DataType, f::Function...)
    for g in f
        if haskey(_interfaces, g)
            push!(_interfaces[g], d) 
        else
            _interfaces[g] = DataType[d]
        end
    end

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diff --git a/base/REPLCompletions.jl b/base/REPLCompletions.jl
index df8c965..d9a8a2c 100644
--- a/base/REPLCompletions.jl
+++ b/base/REPLCompletions.jl
@@ -183,6 +183,17 @@ function latex_completions(string, pos)
 end
 
 function completions(string, pos)
+    try
+        if isdefined(Main, :CUSTOM_AUTOCOMPLETION_HOOK)

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num = rand(1_000_000)
len = map(rand(1_000_000)) do a
        e = string(a)
        if e[1] == '0'
            length(e)-2
        else
            length(e)-4
        end
    end
h = hist(len)