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<p class="MsoNormal">Friends<o:p></o:p></p>
<p class="MsoNormal">Please see <a href="https://github.com/ghc-proposals/ghc-proposals/pull/405">
this proposal #405 to split RecordDotSyntax into two extensions</a><o:p></o:p></p>
<p class="MsoNormal">It is a small modification of #282 on record dot syntax. The top comment gives links to the versions of the proposal before and after the change.<o:p></o:p></p>
<p class="MsoNormal">The main payload is:<o:p></o:p></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo2">Instead of RecordDotSyntax, have to independent extensions, OverloadedRecordDot and OverloadedRecordUpdates.<o:p></o:p></li></ul>
<p>I recommend acceptance of this proposal, but invite the committee’s view on one point (the final bullet below). Here is the thinking<o:p></o:p></p>
<ul type="disc">
<li style="mso-list:l0 level1 lfo1"><code><span style="font-size:10.0pt">RecordDotSyntax</span></code> is the extension that we will eventually want programmers to user. It will probably ultimately imply
<code><span style="font-size:10.0pt">NoFieldSelectors</span></code>. But we aren’t quite ready make that choice yet. So we don’t want to specify exactly what
<code><span style="font-size:10.0pt">RecordDotSyntax</span></code> does yet.<o:p></o:p></li><li style="mso-list:l0 level1 lfo1">So we want another, less ambitious, extension to enable record-dot syntax itself, and its desugaring into
<code><span style="font-size:10.0pt">getField</span></code>; and similarly for record updates.<o:p></o:p></li><li style="mso-list:l0 level1 lfo1">This patch to the proposal goes just a little further, by dis-aggregating into two independent extensions,
<code><span style="font-size:10.0pt">OverloadedRecordDot</span></code> and <code>
<span style="font-size:10.0pt">OverloadedRecordUpdates</span></code>.<o:p></o:p></li><li style="mso-list:l0 level1 lfo1">An alternative, if the committee prefers, would be to have a single extension (say,
<code><span style="font-size:10.0pt">OverloadedRecords</span></code>).<o:p></o:p></li></ul>
<p class="MsoNormal">Please express your opinion. This should not take us long. (Technical and clarification questions would be best done on the Githhub thread, as always.)<o:p></o:p></p>
<p class="MsoNormal">Simon<o:p></o:p></p>
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