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Comments on How to open documentation in qch format in Debian based systems?

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How to open documentation in qch format in Debian based systems?

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I wanted to download C++ documentation and found cppreference-doc-en-qch in Debian's archive:

Description: C and C++ standard library reference (English, Qt Help variant) A version of online C and C++ standard library reference manual available at en.cppreference.com, suitable for viewing offline. . This package contains a Qt Help book.

dpkg -L cppreference-doc-en-qch reveals only /usr/share/cppreference/doc/qch/cppreference-doc-en-cpp.qch, and xdg-open doesn't know how to open it.

How do I actually read this piece of documentation I just installed, or, in general, qch files?

debian qt
posted 5 months ago
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Quasímodo‭
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A web search turned up the Qt online documentation, which suggests using Qt Assistant to organize and read help files packaged as *.qch files.

That looks to be packaged by Debian as assistant-qt6. Alternatively, cppreference-doc-en-qch depends on qttools5-dev-tools which in turn pulls in qt5-assistant which provides /usr/lib/qt5/bin/assistant.

As an alternative in this specific case, Debian also packages what looks to be that same documentation in HTML format as cppreference-doc-en-html.

posted 5 months ago
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Canina‭
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Although the link explains how in "Adding documentation" — with a small mistake, by the use of "Insta... (1 comment)
Although the link explains how in "Adding documentation" — with a small mistake, by the use of "Insta...
Quasímodo‭ wrote 5 months ago
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Although the link explains how in "Adding documentation" — with a small mistake, by the use of "Install" instead of "Add" —, to make the answer self-contained I suggest adding those instructions to it.

By the way, my answer was pointing to qtchooser. It does provide the /usr/bin/assistant link but it is just an useless symlink without a qt*-assistant package, thank you for that.