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c5cb4843e1
CL 95215 changed text/template so that untyped nil arguments were no longer ignored, but were instead passed to functions as expected. This had an unexpected effect on html/template, where all data is implicitly passed to functions: originally untyped nil arguments were not passed and were thus effectively ignored, but after CL 95215 they were passed and were printed, typically as an escaped version of "<nil>". This CL restores some of the behavior of html/template by ignoring untyped nil arguments passed implicitly to escaper functions. While eliminating one change to html/template relative to earlier releases, this unfortunately introduces a different one: originally values of interface type with the value nil were printed as an escaped version of "<nil>". With this CL they are ignored as though they were untyped nil values. My judgement is that this is a less common case. We'll see. This CL adds some tests of typed and untyped nil values to html/template and text/template to capture the current behavior. Updates #18716 Fixes #25875 Change-Id: I5912983ca32b31ece29e929e72d503b54d7b0cac Reviewed-on: https://go-review.googlesource.com/121815 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Daniel Martí <mvdan@mvdan.cc> Reviewed-by: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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