<p dir="ltr">Indeed! Nicely catched! (with the minor exception of being the opposite - loading a package saves me from 'Option clash' error instead of throwing a 'Package hyperref Warning: Option `pdftex' has already been used' warning) </p>
<br><div class="gmail_quote"><div dir="ltr">Στις Κυρ, 10 Ιουλ 2016 - 20:17 ο χρήστης David Carlisle <<a href="mailto:d.p.carlisle@gmail.com">d.p.carlisle@gmail.com</a>> έγραψε:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">This looks like the same issue as<br>
<br>
<a href="http://tex.stackexchange.com/questions/317137/is-it-ok-to-load-a-package-twice-as-long-as-no-extra-options-are-given/317140#317140" rel="noreferrer" target="_blank">http://tex.stackexchange.com/questions/317137/is-it-ok-to-load-a-package-twice-as-long-as-no-extra-options-are-given/317140#317140</a><br>
<br>
with catoptions redefinition of the package loading generating<br>
spurious errors if the package is loaded with no options after having<br>
been loaded with an option.<br>
<br>
David<br>
<br>
<br>
<br>
On 10 July 2016 at 11:55, Ntentos Stavros <<a href="mailto:stdedos@gmail.com" target="_blank">stdedos@gmail.com</a>> wrote:<br>
> -----BEGIN PGP SIGNED MESSAGE-----<br>
> Hash: SHA256<br>
><br>
> Hello to all developers,<br>
><br>
> I have stumbled upon (something that looks like) a bug, but Mn-WE is<br>
> way too complicated to decide who's fault is which. Pardon me in<br>
> advance if I am implicating someone 'innocent'.<br>
><br>
> Package dependency is as follows:<br>
><br>
> 1) I wanted 'pdfcomment' to annotate PDF Documents in Adobe Reader,<br>
> which benefits from 'xcolor', and loads 'hyperref' as required.<br>
><br>
> 2) I wanted 'hyperref' for the hyperlinks (but it is there as of `1`)<br>
><br>
> 3) I wanted 'xwatermark' to draw some watermarks on my document, which<br>
> is further enhanced by 'xcolor' but does no attempt to load it (ie<br>
> left to user)<br>
><br>
> (I might be missing some things, but that is my viewpoint)<br>
> - ---<br>
> Compiling like this, we get the error of '! LaTeX Error: Option clash<br>
> for package color.'<br>
><br>
> However, if we include '\usepackage{hyperref}' anywhere on the<br>
> preample, gives us 'Package hyperref Warning: Option `pdftex' has<br>
> already been used,'.<br>
><br>
> [with some further explaining from later '\hypersetup':<br>
><br>
> (hyperref) setting the option has no effect on input line 1359.<br>
> Package zref Info: New property list: pdfcomment on input line 2724.<br>
> Package zref Info: New property: PCPDFOBJID on input line 2725.<br>
> )<br>
> Package hyperref Info: Option `pdfdisplaydoctitle' set `true' on input<br>
> line 21.<br>
> Package hyperref Info: Option `colorlinks' set `true' on input line 21.'<br>
> ]<br>
><br>
> I am available for any further clarifications you (all) may need to<br>
> help resolve this weird configuration (after all, that's the meanest<br>
> of bugs! :D )<br>
> - --<br>
> Yours faithfully,<br>
> Ntentos Stavros<br>
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><br>
> ---<br>
> Αυτό το e-mail ελέγχθηκε για ιούς από το πρόγραμμα Avast antivirus.<br>
> <a href="https://www.avast.com/antivirus" rel="noreferrer" target="_blank">https://www.avast.com/antivirus</a><br>
</blockquote></div><div dir="ltr">-- <br></div><div data-smartmail="gmail_signature"><div dir="ltr"><p dir="ltr">Με εκτίμηση, <br>
Ντέντος Σταύρος</p>
</div></div>