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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="http://jira.qos.ch/browse/LOGBACK" style="color: #3b73af; text-decoration: none">logback</a> / <a href="http://jira.qos.ch/browse/LOGBACK-1215" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-693b8d7b-eee7-416a-9fe4-a9bad69b0753" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="http://jira.qos.ch/browse/LOGBACK-1215" style="color: #3b73af; text-decoration: none">LOGBACK-1215</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="http://jira.qos.ch/browse/LOGBACK-1215" style="color: #3b73af; text-decoration: none">Logger string interpolation fails if exception is the last argument despite correct number of "{}"</a> </span>
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Issue Type:
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-bug-693b8d7b-eee7-416a-9fe4-a9bad69b0753" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="logback-dev@qos.ch" id="email_logback-dev@qos.ch" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=logback-dev%40qos.ch" style="color:#3b73af;; color: #3b73af; text-decoration: none">Logback dev list</a>
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Components:
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logback-core
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Created:
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19/Oct/16 2:58 PM
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exception
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="navkast" id="email_navkast" href="http://jira.qos.ch/secure/ViewProfile.jspa?name=navkast" style="color:#3b73af;; color: #3b73af; text-decoration: none">Naveen Kasthuri</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">It's known that:</p>
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logger.error("<span class="code-object" style="color: #910091">String</span> {} with {} some {} arguments, object1, object2, object3, exception);
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">will correctly interpolate the three objects' object.toString() where the " {} " exist in the string. </p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However, this will produce unintuitive behavior:</p>
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logger.error("<span class="code-object" style="color: #910091">String</span> {} with {} some {} arguments, object1, object2, exception);
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Expected behavior: the string is interpolated properly, with the third argument being the result of exception.toString()<br /> Actual behavior: the third " {} " literally prints out " {} ".</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This is worse if you're trying to print multiple exceptions:</p>
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logger.error(<span class="code-quote" style="color: #009100">"Exception 1: {}, Exception 2: {}"</span>, exception1, exception2);
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This will have the very unintuitive behavior of printing this, essentially leaving the "{}" in the string.</p>
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<span class="code-quote" style="color: #009100">"Exception 1: {}, Exception 2: {}"</span>
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