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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-6086] Unicode/UTF-8 in the shell needs to handle zero-width and double-width characters</title>
                <link>https://jira.mongodb.org/browse/SERVER-6086</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Combining characters in Unicode are composed of two adjacent Unicode code units but occupy a single position on the screen.  The second code unit of these pairs needs to be treated as a zero-width character so that cursor positioning matches displayed text properly.&lt;/p&gt;

&lt;p&gt;Chinese, Japanese and Korean (CJK) characters will typically occupy two screen positions although they are encoded as a single Unicode code unit.  These characters need to be treated as double-width characters so that cursor position matches displayed text properly.&lt;/p&gt;

&lt;p&gt;To reproduce:&lt;/p&gt;

&lt;p&gt;Open mongo shell.&lt;br/&gt;
Insert multi-byte sequence as a find document such as:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&amp;gt; db.item.find({&apos;type&apos;:&quot;&#54620;&#44544;&#48660;&#46972;&#48660;&#46972;&#48660;&#46972;&quot;})&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Move the cursor to a few characters before the terminating quotation and hit backspace.&lt;/p&gt;

&lt;p&gt;The terminating quotation will disappear.&lt;/p&gt;</description>
                <environment></environment>
        <key id="41187">SERVER-6086</key>
            <summary>Unicode/UTF-8 in the shell needs to handle zero-width and double-width characters</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="tad">Tad Marshall</reporter>
                        <labels>
                    </labels>
                <created>Wed, 13 Jun 2012 19:53:47 +0000</created>
                <updated>Fri, 31 Jul 2015 17:32:05 +0000</updated>
                            <resolved>Wed, 30 Jul 2014 02:35:34 +0000</resolved>
                                    <version>2.1.1</version>
                                    <fixVersion>2.7.5</fixVersion>
                                    <component>Shell</component>
                                        <votes>1</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="677249" author="jianfa.tang" created="Thu, 31 Jul 2014 06:01:36 +0000"  >&lt;p&gt;The cursor navigation works now. When I move the cursor under the chinese characters, the entire character is underlined(as opposed to be half). And press the arrow key once does move one char over. &lt;/p&gt;

&lt;p&gt;Looking at the screenshot(see attachment image.png), you can notice there is some cosmetic issue. I tried to hit backspace 3 times when the cursor is at the last double quote mark. 3 chinese characters were deleted as expected, however, there are some extra curly brackets being shown in the end. If you hit enter, the statement would just work fine so it&apos;s just cosmetic. &lt;/p&gt;</comment>
                            <comment id="675889" author="xgen-internal-githook" created="Wed, 30 Jul 2014 02:34:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;Bloodevil&apos;, u&apos;name&apos;: u&apos;yeaji.shin&apos;, u&apos;email&apos;: u&apos;bloodevil4@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6086&quot; title=&quot;Unicode/UTF-8 in the shell needs to handle zero-width and double-width characters&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6086&quot;&gt;&lt;del&gt;SERVER-6086&lt;/del&gt;&lt;/a&gt; fixed shell to handle zero-width and double-width characters&lt;/p&gt;

&lt;p&gt;recompute character width when refresh line.&lt;br/&gt;
use existing function mk_wcswidth.&lt;br/&gt;
add fall back when mk_wcswidth return -1 on calculateColumnPosition.&lt;br/&gt;
before set position, calculate width of characters.&lt;/p&gt;

&lt;p&gt;Closes #717&lt;/p&gt;

&lt;p&gt;Signed-off-by: Benety Goh &amp;lt;benety@mongodb.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f58fbec3e4418adc6a266f41ad2872451fab760a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f58fbec3e4418adc6a266f41ad2872451fab760a&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="153244">SERVER-14931</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="144703">SERVER-14399</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="150246">SERVER-14741</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="16088">SERVER-2939</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
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                    <name>Tested</name>
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                                                        </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="48953" name="image.png" size="14971" author="jianfa.tang@mongodb.com" created="Thu, 31 Jul 2014 06:01:36 +0000"/>
                    </attachments>
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