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Fix rebar_utils:expand_env_variable/3

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The function may fail with a badarg exception because the first regex
returns an iolist() which is allowed to be a improper list. In this case
'++' cannot append to the iolist. The correct way to append something to
an iolist() is

  [iolist(), "tail"]

because iolist's are allowed to be arbitrarily deep lists.
This commit is contained in:
Jan Kloetzke 2011-11-01 19:17:01 +01:00 committed by Tuncer Ayaz
parent 9197e70bd7
commit b10224be62
1 changed files with 1 additions and 1 deletions
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2
src/rebar_utils.erl
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@ -196,7 +196,7 @@ expand_env_variable(InStr, VarName, RawVarValue) ->
%% Given variable "FOO": match $FOO\s | $FOOeol | ${FOO}
RegEx = io_lib:format("\\\$(~s(\\s|$)|{~s})", [VarName, VarName]),
ReOpts = [global, {return, list}],
re:replace(InStr, RegEx, VarValue ++ "\\2", ReOpts)
re:replace(InStr, RegEx, [VarValue, "\\2"], ReOpts)
end.