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authorLuca Toscano <elukey@apache.org>2016-11-15 23:57:36 +0100
committerLuca Toscano <elukey@apache.org>2016-11-15 23:57:36 +0100
commitebb48eb16f897e2baa96fbe8a3096b517dc480d3 (patch)
tree4bc73ae7fe14b3d92fcedf504a4bdb0e960451d2 /docs/manual/mod/mod_headers.html.en
parentAdded a note in the mod_headers docs about Content-Type and setifempty (diff)
downloadapache2-ebb48eb16f897e2baa96fbe8a3096b517dc480d3.tar.xz
apache2-ebb48eb16f897e2baa96fbe8a3096b517dc480d3.zip
documentation rebuild
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1769900 13f79535-47bb-0310-9956-ffa450edef68
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-rw-r--r--docs/manual/mod/mod_headers.html.en12
1 files changed, 10 insertions, 2 deletions
diff --git a/docs/manual/mod/mod_headers.html.en b/docs/manual/mod/mod_headers.html.en
index 364bc74094..d157b01b50 100644
--- a/docs/manual/mod/mod_headers.html.en
+++ b/docs/manual/mod/mod_headers.html.en
@@ -309,8 +309,16 @@ available in 2.4.10 and later</td></tr>
<dt><code>setifempty</code></dt>
<dd>The request header is set, but only if there is no previous header
- with this name.<br />
- Available in 2.4.7 and later.</dd>
+ with this name.
+ <div class="note">
+ The Content-Type header is a special use case since there might be
+ the chance that its value have been determined but the header is not part
+ of the response when <code>setifempty</code> is evaluated.
+ It is safer to use <code>set</code> for this use case like in the
+ following example:
+ <pre class="prettyprint lang-config">Header set Content-Type "text/plain" "expr=-z %{CONTENT_TYPE}"</pre>
+
+ </div></dd>
<dt><code>unset</code></dt>
<dd>The response header of this name is removed, if it exists.