Current version is 2.08 - please upgrade if you have an older version!
This page should really be named nXhtml since it is about the whole nXhtml package. nxhtml-mode is just a part of that package.
Newest features (see changelog):
One of the main parts is the major mode nxhtml-mode for editing XHTML files (based on NxmlMode). This gives XHTML completion of tags and attributes also in for example php files (even if they do not contain XML + DTD specifications).
There are a lot of other features like simple search and replace in directory trees, simple file upload, etc. The only way to find out is to download nXhtml and try.
Installation is easy, just unzip the archive and (just as README.txt says) add one line to your .emacs:
Note that if you have EmacsW32 then nXhtml is already included, but you have to turn it on. And you may want to update to a more recent version of nXhtml. (If you do just put it in the same location where the old version was.)
You need Emacs 22 or later to use nXhtml.
These are defined in /nxhtml/nxhtml/nxhtml-autoload.el in the function nxhtml-setup-file-assoc, so just modify ‘auto-mode-alist as normal.
nXhtml comes with a lot of elisp libraries, some of which you can use separately. I used to have a list here, but I always forget to update that so I have removed it. Please download the whole library if you are interested in some special pieces. Or, pick them from the latest version sources on Launchpad (this may be a beta version though).
Note: Some of the files used to be here on Emacs Wiki too, but I decided to delete them since the latest version of them are now easily available from there. The files I have deleted are ediff-url.el, freemind.el, tabkey2.el and w32-print.el.
The bug tracker is at: https://bugs.launchpad.net/nxhtml. Please report bugs here; see M-x nxhtml-report-bug for more instructions.
There is a list of FAQs at https://answers.launchpad.net/nxhtml/+faqs
Questions that are not bugs can be asked https://answers.launchpad.net/nxhtml
Old solved bugs that were reported on Emacs Wiki are here: NxhtmlOldBugs. Please do not add any more bugs here.