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<A NAME="1"><!-- Empty --></A>
<H2>1 Stdlib Release Notes
</H2>

<P>This document describes the changes made to the Stdlib application.
<A NAME="1.1"><!-- Empty --></A>
<H3>1.1 Stdlib 1.13.2</H3>
<A NAME="1.1.1"><!-- Empty --></A>
<H4>1.1.1 Improvements and New Features</H4>

<P>
<UL>

<LI>
  The -rsh switch for starting a remote shell (introduced
with OTP-5210) clashed with an already existing switch
used by slave. Therefore the switch for the remote shell
is now instead named -remsh.
<BR>
 Own Id: OTP-5248 Aux Id: OTP-5210 
<BR>

</LI>


</UL>
<A NAME="1.2"><!-- Empty --></A>
<H3>1.2 Stdlib 1.13.1</H3>
<A NAME="1.2.1"><!-- Empty --></A>
<H4>1.2.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
  The pman 'trace shell' functionality was broken as has
now been fixed. Furthermore, pman could not correctly
find the pid of the active shell if more than one shell
process was running on the node. This has also been
corrected.
<BR>
 Own Id: OTP-5191
<BR>

</LI>


<LI>
  When the undocumented feature &#34;parameterized modules was
used, the ?MODULE macro did not work correctly.
<BR>
 Own Id: OTP-5224
<BR>

</LI>


</UL>
<A NAME="1.2.2"><!-- Empty --></A>
<H4>1.2.2 Improvements and New Features</H4>

<P>
<UL>

<LI>
  You can now start Erlang with the -rsh flag which gives
you a remote initial shell instead of a local one.
Example: erl -sname this_node -rsh other_node@other_host
<BR>
 Own Id: OTP-5210
<BR>

</LI>


<LI>
  The man page for the <CODE>lists</CODE> module has been updated
with decscription of the new <CODE>zip</CODE>, <CODE>unzip</CODE>,
and <CODE>partition/2</CODE> functions.
<BR>
 Own Id: OTP-5213
<BR>

</LI>


<LI>
  The top level group leader used to be listed as job #1 in
the job list in JCL mode. Since there is no shell
associated with this process that can be connected to, it
will no longer be listed.
<BR>
 Own Id: OTP-5214
<BR>

</LI>


<LI>
  The possibility to start the erlang shell in parallell
with the rest of the system has been reintroduced for
backwards compatibility. Note that this old behaviour is
error prone and should not be used unless for some reason
necessary.
<BR>
 Own Id: OTP-5218 Aux Id: seq9534 
<BR>

</LI>


<LI>
  The <CODE>shell</CODE> commands <CODE>rr/1,2,3</CODE> now accepts
wildcards when reading record definitions from BEAM
files.
<BR>
 Own Id: OTP-5226
<BR>

</LI>


</UL>
<A NAME="1.3"><!-- Empty --></A>
<H3>1.3 Stdlib 1.13</H3>
<A NAME="1.3.1"><!-- Empty --></A>
<H4>1.3.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         gen_server:s internal function get_parent, called by
         gen_server:enter_loop/[4,5], now returns the pid of
         parents that are registered processes, instead of
         returning their name. The reason for this is that
         gen_server relies on that the parent is represented as a
         pid. This error in get_parent/0 had the effect that the
         terminate function of the child was not run when it was
         shutdown.
<BR>
         Own Id: OTP-4820 Aux Id: seq8170 
<BR>

</LI>


<LI>
         For the bit syntax, when matching with a size field that
         is bound during the same matching, a warning for unused
         variable was emitted. This bug has been fixed.
<BR>
         Own Id: OTP-4858
<BR>

</LI>


<LI>
         When parsing a badly formed file <CODE>epp</CODE> hangs. This
         problem has been fixed.
<BR>
         Own Id: OTP-4871 Aux Id: OTP-4870 
<BR>

</LI>


<LI>
         Bugs concerning guards have been fixed in the Erlang
         interpreter.
<BR>
         Own Id: OTP-4885
<BR>

</LI>


<LI>
         The linter now checks the record name when calling the
         function <CODE>erlang:is_record/2</CODE>.
<BR>
         Own Id: OTP-4886
<BR>

</LI>


<LI>
         Guards of mach specifications are corrected to resemble
         the semantics of guards in real code more closely. The
         implementation now corresponds to the documentation in
         erts users guide. The following things are corrected:
         <BR>

<UL>

<LI>
Guard sematics was wrong when it came to
         logical operators and exceptions. {'or',
         {'is_integer','$1'}, {'or', '$1', '$1'}} evaluated to
         true with '$1' bound to an integer.
</LI>


<LI>
Unary +
         and - was not implemented
</LI>


<LI>
Calling operators
         as Bif's was not supported by ets/dbg:fun2ms
         (erlang:'or'(A,B) etc)
</LI>


<LI>
Old typetests (like
         integer(X) instead of is_integer(X)) was not supported by
         ets/dbg:fun2ms
</LI>


<LI>
Semicolon (;) in guards was
         not supported by ets/dbg:fun2ms
</LI>


</UL>

         *** POTENTIAL INCOMPATIBILITY ***
<BR>
         Own Id: OTP-4927
<BR>

</LI>


<LI>
         A bug that could cause a crash has been fixed in the
         <CODE>file_sorter</CODE> module. The crash could only occur
         when sorting or merging to a file and the input function
         returned <CODE>{end_of_input, Value}</CODE>.
<BR>
         Own Id: OTP-5009
<BR>

</LI>


<LI>
         A function clause exit in filelib:fold_files/5 has been
         fixed.
<BR>
         Own Id: OTP-5137
<BR>

</LI>


<LI>
         filelib:fold_files/5 has been fixed to not include
         directories that match the regular expression in the
         result. In this process, filelib:is_regular/1 has been
         added to the module. WARNING the behaviour of
         filelib:fold_files/5 has also been changed so the regexp
         match is tried not on the full name, but locally in each
         traversed directory.
<BR>
         Own Id: OTP-5171 Aux Id: OTP-5128 
<BR>

</LI>


</UL>
<A NAME="1.3.2"><!-- Empty --></A>
<H4>1.3.2 Improvements and New Features</H4>

<P>
<UL>

<LI>
         The initial shell process started in parallell with the
         init boot process. This made it possible to pipe commands
         to the shell that got evaluated before the system had
         booted properly. Also the shell was normally accessible
         before .erlang had been evaluated and this caused
         problems especially related to code loading. This has now
         been fixed so that the initial shell is not accessible
         until after the init boot routine has finished and
         .erlang has been evaluated. Note that the shell starts
         before any -s arguments are executed.
<BR>
         Own Id: OTP-4877
<BR>

</LI>


<LI>
         It is now possible to compile files with erlc without
         getting a lot of (for compilation) unneccessary code
         loaded and executed (like distribution, inet config,
         etc). erlc now also calls erl with <CODE>-boot
         start_clean</CODE> (so that sasl is not started even if
         <CODE>start_sasl</CODE> is default boot script).
<BR>
         Own Id: OTP-4878
<BR>

</LI>


<LI>
         Dets tables can now be opened or closed in parallel. In
         particular, if some table is being repaired, other tables
         can still be opened or closed.
<BR>
         Own Id: OTP-4908
<BR>

</LI>


<LI>
         The new STDLIB module <CODE>qlc</CODE> implements a query
         language with a list comprehension syntax completely
         embedded in Erlang. There is support for reading data
         from ETS, Dets, and Mnesia tables as well as for defining
         other sources of data. For easy testing queries can be
         stated in the Erlang shell. The <CODE>qlc</CODE> module aims at
         replacing Mnemosyne. See <CODE>qlc(3)</CODE> for details and
         examples.
<BR>
         Own Id: OTP-5043
<BR>

</LI>


<LI>
         Some support for records has been added to the Erlang
         shell. There are commands for reading record definitions
         from files and for manipulating record definitions in the
         shell. The record syntax can be used in the shell and
         return values are printed as records when possible using
         the records definitions known to the shell. New commands
         in the shell are <CODE>rd/2</CODE>, <CODE>rf/0,1</CODE>,
         <CODE>rl/0,1</CODE>, <CODE>rp/1</CODE>, and <CODE>rr/1,2,3</CODE>. Existing
         functions in <CODE>user_default.erl</CODE> with any of these
         names need to be renamed. See <CODE>shell(3)</CODE> for further
         details.
<BR>
         *** POTENTIAL INCOMPATIBILITY ***
<BR>
         Own Id: OTP-5063
<BR>

</LI>


<LI>
         A new function, string:to_integer/1, has been added.
<BR>
         Own Id: OTP-5081 Aux Id: OTP-5136 
<BR>

</LI>


<LI>
         The new function <CODE>dets:repair_continuation/2</CODE> can be
         used for restoring an opaque continuation returned by
         <CODE>dets:select/1</CODE> or <CODE>dets:select/3</CODE> if the
         continuation has passed through the external term format
         (been sent between nodes or stored on disk).
<BR>
         Own Id: OTP-5126
<BR>

</LI>


<LI>
         A new function, string:to_float/1, has been added.
<BR>
         Own Id: OTP-5136 Aux Id: OTP-5081 
<BR>

</LI>


<LI>
         Test cases have been added for string.
<BR>
         Own Id: OTP-5138
<BR>

</LI>


</UL>
<A NAME="1.4"><!-- Empty --></A>
<H3>1.4 Stdlib 1.12.8</H3>
<A NAME="1.4.1"><!-- Empty --></A>
<H4>1.4.1 Improvements and New Features</H4>

<P>
<UL>

<LI>
         The functions ets:insert_new/2 and dets:insert_new/2 are
         added. Please consult the manual pages for details.
<BR>
         Own Id: OTP-5075
<BR>

</LI>


<LI>
         New function: proc_lib:hibernate/3. Processes spawned
         using proc_lib (also indirectly, such as gen_server
         process), should use this function instead of the BIF
         erlang:hibernate/3 directly to ensure that the exception
         handler for the process continues to work when the
         process is awaken.
<BR>
         Own Id: OTP-5077
<BR>

</LI>


</UL>
<A NAME="1.5"><!-- Empty --></A>
<H3>1.5 Stdlib 1.12.6</H3>
<A NAME="1.5.1"><!-- Empty --></A>
<H4>1.5.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         If many files or sockets were open (more than 256),
         beam_lib operations could fail. Corrected.
<BR>
         Own Id: OTP-5046 Aux Id: OTP-4997, seq8590 
<BR>

</LI>


</UL>
<A NAME="1.6"><!-- Empty --></A>
<H3>1.6 Stdlib 1.12.5</H3>
<A NAME="1.6.1"><!-- Empty --></A>
<H4>1.6.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         When opening a Dets table read only an attempt was made
         to re-hash the table resulting in an error message. This
         problem has been fixed.
<BR>
         Own Id: OTP-4989 Aux Id: seq8536 
<BR>

</LI>


</UL>
<A NAME="1.6.2"><!-- Empty --></A>
<H4>1.6.2 Improvements and New Features</H4>

<P>
<UL>

<LI>
         If a gen_server, gen_event or gen_fsm process exits with
         {undef,[{M,F,A}|...]}, the error report will now state if
         the function call failed because the module could not be
         loaded or because the function was not exported.
<BR>
         Own Id: OTP-4952 Aux Id: OTP-4925 
<BR>

</LI>


</UL>
<A NAME="1.7"><!-- Empty --></A>
<H3>1.7 Stdlib 1.12.4</H3>
<A NAME="1.7.1"><!-- Empty --></A>
<H4>1.7.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         The shell function <CODE>c:regs()</CODE> did crash if there was
         a registered port among the registered names. This is now
         corrected.
<BR>
         Own Id: OTP-4890
<BR>

</LI>


<LI>
         A bug has been fixed in <CODE>Dets</CODE>: not all objects were
         always visible in tables with more than 131072 keys
<BR>
         Own Id: OTP-4906
<BR>

</LI>


<LI>
         A bug has been fixed in <CODE>Dets</CODE>: when trying to
         repair a version 9 table, a <CODE>not_a_dets_file</CODE> error
         message was returned unnecessarily often.
<BR>
         Own Id: OTP-4907
<BR>

</LI>


</UL>
<A NAME="1.7.2"><!-- Empty --></A>
<H4>1.7.2 Improvements and New Features</H4>

<P>
<UL>

<LI>
         Starting Erlang with the +Bi flag (to ignore ^C), now
         also disables the quit ('q') option in the JCL menu.
<BR>
         Own Id: OTP-4897
<BR>

</LI>


</UL>
<A NAME="1.8"><!-- Empty --></A>
<H3>1.8 Stdlib 1.12.3</H3>
<A NAME="1.8.1"><!-- Empty --></A>
<H4>1.8.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         A bug in erl_scan caused the compiler to hang when
         end-of-file in a comment was encountered. This is now
         corrected.
<BR>
         Own Id: OTP-4787
<BR>

</LI>


<LI>
         The linter now reports errors for unsafe variables when
         the option <CODE>nowarn_unused_vars</CODE> is given.
<BR>
         Own Id: OTP-4831 Aux Id: seq8202 
<BR>

</LI>


<LI>
         <CODE>gen_server:cast/2</CODE> now crashes for invalid
         arguments. 
         <BR>
<CODE>gen_server:abcast/2-3</CODE> now crashes for invalid
         arguments. The behaviour when casting to the name
         <CODE>global</CODE> has been corrected. Previously,
         <CODE>gen_server:abcast(global,[node@host])</CODE> tried to
         cast to the globally registered name <CODE>node@host</CODE>,
         which is more of a bug than less. Now such a call will
         cast to the registered name <CODE>global</CODE> at the node
         <CODE>node@host</CODE> as (probably) expected. 
         <BR>
An <CODE>rpc:call/5</CODE> and <CODE>rpc:block_call/5</CODE>
         having a timeout argument has been added.
         <BR>
<CODE>rpc:abcast/2-3</CODE> has been improved not to get
         stuck waiting for connection setup if the remote node is
         not connected. In this case the send is spawned off to a
         temporary process.
         <BR>
Two typos in the docs for module <CODE>calendar</CODE> has
         been corrected thanks to Bengt Kleberg.
<BR>
         <BR>

         *** POTENTIAL INCOMPATIBILITY ***
<BR>
         Own Id: OTP-4844 Aux Id: seq8226 
<BR>

</LI>


</UL>
<A NAME="1.8.2"><!-- Empty --></A>
<H4>1.8.2 Improvements and New Features</H4>

<P>
<UL>

<LI>
         The f/1 shell command did not work correctly with
         restricted shell.
<BR>
         Own Id: OTP-4818
<BR>

</LI>


</UL>
<A NAME="1.9"><!-- Empty --></A>
<H3>1.9 Stdlib 1.12.2</H3>
<A NAME="1.9.1"><!-- Empty --></A>
<H4>1.9.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         gen_server:s internal function get_parent, called by
         gen_server:enter_loop/[4,5], now returns the pid of
         parents that are registered processes, instead of
         returning their name. The reason for this is that
         gen_server relies on that the parent is represented as a
         pid. This error in get_parent/0 had the effect that the
         terminate function of the child was not run when it was
         shutdown.
<BR>
         Own Id: OTP-4820 Aux Id: seq8170 
<BR>

</LI>


</UL>
<A NAME="1.10"><!-- Empty --></A>
<H3>1.10 Stdlib 1.12.1</H3>
<A NAME="1.10.1"><!-- Empty --></A>
<H4>1.10.1 Fixed Bugs and Malfunctions</H4>

<P>
<UL>

<LI>
         The code server could hang if invoked early in the
         startup. For example if the emulator was started with &#34;-s
         file eval Filename&#34; and Filename contained a call to
         code:add_patha/1 the code server accidentally tried to
         execute code in an unloaded module from inside the code
         that loaded a module - hence hangup. This bug has now
         been fixed. <BR>
Note! Starting erlang through code loading
         from a remote erlang boot server will not work after this
         patch. It will be fixed in a later patch. Rumours has it
         that remote boot server code loading did not work before
         this patch either. It is not a commonly used feature.
<BR>
         *** POTENTIAL INCOMPATIBILITY ***
<BR>
         Own Id: OTP-4802 Aux Id: seq8314 
<BR>

</LI>


</UL>
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