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doc/go1.21: reformat flag init change note 

It reads better as a single paragraph. Also added links.

Change-Id: Id6ba54111b63fbd536423272f674e0eb64b087a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/499956
TryBot-Bypass: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Ian Lance Taylor 2023-06-01 09:00:46 -07:00 committed by Gopher Robot
parent fecb31f672
commit 990113f3a0
1 changed files with 13 additions and 3 deletions
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@ -568,9 +568,19 @@ Do not send CLs removing the interior tags from such phrases.
</p> </p>
<p><!-- CL 480215 --> <p><!-- CL 480215 -->
A flag definition (via <code>Bool</code>, <code>BoolVar</code>, <code>Int</code>, <code>IntVar</code>, etc.) will panic if <code>Set</code> has already been called on a flag with the same name. A flag definition
<p> (via <a href="/pkg/flag/#Bool"><code>Bool</code></a>,
This change is intended to detect cases where <a href="#language">changes in initialization order</a> cause flag operations to occur in a different order than expected. In many cases the fix to this problem is to introduce a explicit package dependence to correctly order the definition before any <code>Set</code> operations. <a href="/pkg/flag/#BoolVar"><code>BoolVar</code></a>,
<a href="/pkg/flag/#Int"><code>Int</code></a>,
<a href="/pkg/flag/#IntVar"><code>IntVar</code></a>, etc.)
will panic if <a href="/pkg/flag/#Set"><code>Set</code></a> has
already been called on a flag with the same name. This change is
intended to detect cases where <a href="#language">changes in
initialization order</a> cause flag operations to occur in a
different order than expected. In many cases the fix to this
problem is to introduce a explicit package dependence to
correctly order the definition before any
<a href="/pkg/flag/#Set"><code>Set</code></a> operations.
</p> </p>
</dd> </dd>
</dl><!-- flag --> </dl><!-- flag -->