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authorErlang/OTP <[email protected]>2013-01-29 11:38:41 +0100
committerErlang/OTP <[email protected]>2013-01-29 11:38:41 +0100
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</header>
<p>This document describes the changes made to the STDLIB application.</p>
+<section><title>STDLIB 1.19</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Wildcards such as "some/path/*" passed to
+ <c>filelib:wildcard/2</c> would fail to match any file.
+ (Thanks to Samuel Rivas for reporting this bug.)</p>
+ <p>
+ Own Id: OTP-6874 Aux Id: kunagi-190 [101] </p>
+ </item>
+ <item>
+ <p>
+ Fixed error handling in proc_lib:start which could hang
+ if the spawned process died in init.</p>
+ <p>
+ Own Id: OTP-9803 Aux Id: kunagi-209 [120] </p>
+ </item>
+ <item>
+ <p>
+ Allow ** in filelib:wildcard</p>
+ <p>
+ Two adjacent * used as a single pattern will match all
+ files and zero or more directories and subdirectories.
+ (Thanks to Jos� Valim)</p>
+ <p>
+ Own Id: OTP-10431</p>
+ </item>
+ <item>
+ <p>
+ Add the \gN and \g{N} syntax for back references in
+ re:replace/3,4 to allow use with numeric replacement
+ strings. (Thanks to Vance Shipley)</p>
+ <p>
+ Own Id: OTP-10455</p>
+ </item>
+ <item>
+ <p>
+ Export ets:match_pattern/0 type (Thanks to Joseph Wayne
+ Norton)</p>
+ <p>
+ Own Id: OTP-10472</p>
+ </item>
+ <item>
+ <p>
+ Fix printing the empty binary at depth 1 with ~W (Thanks
+ to Andrew Thompson)</p>
+ <p>
+ Own Id: OTP-10504</p>
+ </item>
+ <item>
+ <p> The type <c>ascii_string()</c> in the <c>base64</c>
+ module has been corrected. The type
+ <c>file:file_info()</c> has been cleaned up. The type
+ <c>file:fd()</c> has been made opaque in the
+ documentation. </p>
+ <p>
+ Own Id: OTP-10624 Aux Id: kunagi-352 [263] </p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p> Dets tables are no longer fixed while traversing with
+ a bound key (when only the objects with the right key are
+ matched). This optimization affects the functions
+ <c>match/2</c>, <c>match_object/2</c>, <c>select/2</c>,
+ <c>match_delete/2</c>, and <c>select_delete/2</c>. </p>
+ <p>
+ Own Id: OTP-10097</p>
+ </item>
+ <item>
+ <p> Support for Unicode has been implemented. </p>
+ <p>
+ Own Id: OTP-10302</p>
+ </item>
+ <item>
+ <p> The linter now warns for opaque types that are not
+ exported, as well as for under-specified opaque types.
+ </p>
+ <p>
+ Own Id: OTP-10436</p>
+ </item>
+ <item>
+ <p> The type <c>file:name()</c> has been substituted for
+ the type <c>file:filename()</c> in the following
+ functions in the <c>filename</c> module:
+ <c>absname/2</c>, <c>absname_join/2</c>, <c>join/1,2</c>,
+ and <c>split/1</c>. </p>
+ <p>
+ Own Id: OTP-10474</p>
+ </item>
+ <item>
+ <p>
+ If a child process fails in its start function, then the
+ error reason was earlier only reported as an error report
+ from the error_handler, and supervisor:start_link would
+ only return <c>{error,shutdown}</c>. This has been
+ changed so the supervisor will now return
+ <c>{error,{shutdown,Reason}}</c>, where <c>Reason</c>
+ identifies the failing child and its error reason.
+ (Thanks to Tomas Pihl)</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-10490</p>
+ </item>
+ <item>
+ <p>Where necessary a comment stating encoding has been
+ added to Erlang files. The comment is meant to be removed
+ in Erlang/OTP R17B when UTF-8 becomes the default
+ encoding. </p>
+ <p>
+ Own Id: OTP-10630</p>
+ </item>
+ <item>
+ <p> The contracts and types of the modules
+ <c>erl_scan</c> and <c>sys</c> have been corrected and
+ improved. (Thanks to Kostis Sagonas.) </p>
+ <p>
+ Own Id: OTP-10658</p>
+ </item>
+ <item>
+ <p> The Erlang shell now skips the rest of the line when
+ it encounters an Erlang scanner error. </p>
+ <p>
+ Own Id: OTP-10659</p>
+ </item>
+ <item>
+ <p>
+ Clean up some specs in the proplists module. (Thanks to
+ Kostis Sagonas.)</p>
+ <p>
+ Own Id: OTP-10663</p>
+ </item>
+ <item>
+ <p> Some examples overflowing the width of PDF pages have
+ been corrected. </p>
+ <p>
+ Own Id: OTP-10665</p>
+ </item>
+ <item>
+ <p>
+ Enable escript to accept emulator arguments when script
+ file has no shebang. Thanks to Magnus Henoch</p>
+ <p>
+ Own Id: OTP-10691</p>
+ </item>
+ <item>
+ <p>
+ Fix bug in queue:out/1, queue:out_r/1 that makes it
+ O(N^2) in worst case. Thanks to Aleksandr Erofeev.</p>
+ <p>
+ Own Id: OTP-10722</p>
+ </item>
+ <item>
+ <p> There are new functions in the <c>epp</c> module
+ which read the character encoding from files. See
+ <c>epp(3)</c> for more information. </p>
+ <p>
+ Own Id: OTP-10742 Aux Id: OTP-10302 </p>
+ </item>
+ <item>
+ <p> The functions in <c>io_lib</c> have been adjusted for
+ Unicode. The existing functions <c>write_string()</c> and
+ so on now take Unicode strings, while the old behavior
+ has been taken over by new functions
+ <c>write_latin1_string()</c> and so on. There are also
+ new functions to write Unicode strings as Latin-1
+ strings, mainly targetted towards the Erlang pretty
+ printer (<c>erl_pp</c>). </p>
+ <p>
+ Own Id: OTP-10745 Aux Id: OTP-10302 </p>
+ </item>
+ <item>
+ <p> The new functions <c>proc_lib:format/2</c> and
+ <c>erl_parse:abstract/2</c> accept an encoding as second
+ argument. </p>
+ <p>
+ Own Id: OTP-10749 Aux Id: OTP-10302 </p>
+ </item>
+ <item>
+ <p>
+ Increased potential concurrency in ETS for
+ <c>write_concurrency</c> option. The number of internal
+ table locks has increased from 16 to 64. This makes it
+ four times less likely that two concurrent processes
+ writing to the same table would collide and thereby
+ serialized. The cost is an increased constant memory
+ footprint for tables using write_concurrency. The memory
+ consumption per inserted record is not affected. The
+ increased footprint can be particularly large if
+ <c>write_concurrency</c> is combined with
+ <c>read_concurrency</c>.</p>
+ <p>
+ Own Id: OTP-10787</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>STDLIB 1.18.3</title>
<section><title>Fixed Bugs and Malfunctions</title>