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    <body><span class="vcard"><a class="email" href="mailto:ming.v.hua@qq.com" title="Ming Hua <ming.v.hua@qq.com>"> <span class="fn">Ming Hua</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [EDITING] When I type "5-d" into cell, it is autoconverted into date 2021/07/05"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=143165">bug 143165</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>ming.v.hua@qq.com
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Ever confirmed</td>
           <td>
                
           </td>
           <td>1
           </td>
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         <tr>
           <td style="text-align:right;">Status</td>
           <td>UNCONFIRMED
           </td>
           <td>NEW
           </td>
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        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [EDITING] When I type "5-d" into cell, it is autoconverted into date 2021/07/05"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=143165#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [EDITING] When I type "5-d" into cell, it is autoconverted into date 2021/07/05"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=143165">bug 143165</a>
              from <span class="vcard"><a class="email" href="mailto:ming.v.hua@qq.com" title="Ming Hua <ming.v.hua@qq.com>"> <span class="fn">Ming Hua</span></a>
</span></b>
        <pre>Reproduced with 7.0.6 and simplified Chinese (zh-CN) locale:
Version: 7.0.6.2 (x64)
Build ID: 144abb84a525d8e30c9dbbefa69cbbf2d8d4ae3b
CPU threads: 2; OS: Windows 10.0 Build 19041; UI render: default; VCL: win
Locale: zh-CN (zh_CN); UI: en-US
Calc: threaded
...with both the attached sample ODS file and a fresh new spreadsheet.

I agree with Mike's diagnosis in <a href="show_bug.cgi?id=143165#c5">comment #5</a>, that this is not AutoCorrection,
but instead Calc converting inputted strings as dates according to
locale-specific settings.  However I also consider such conversion defective,
as the patterns for converting to dates in zh-CN locale is (Tools > Options >
Language Settings > Languages > Formats > Date acceptance patterns):
"Y/M/D;M-D;M/D;M/D;Y.M.D;Y/M/D;Y年M月D日;M月D日"
and it doesn't make sense that "5-D" would be treated as matching this pattern,
using the literal "D" in the input to match the "D" format code (and converting
it to the current month July anyway).</pre>
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