![]() See Emacs#Validation_quickstart for how to make Emacs/nxml use the DTD's for validationĪn XML editor can check if you XML is well-formed (the brackets match up and so on), but to check for validity, you need to give it the schema for the file type you're editing.The built-in nxml-mode does syntax highlighting and well-formedness checking, see Emacs#nxml-mode.Emacs – a self-documenting, extensible lisp machine.Does syntax highlighting for XML out of the box if you have "syntax on" in your ~/.vimrc.Supposedly, enabling the XML validation plugin and putting before the element to make it use the DTD should catch validation errors, but it claims the document is valid when it is not.Kate – another "programmers" GUI editor (written in C++/Qt) from KDE.There seems to be a bug that gives wrong line numbers on some validation errors (don't know if this uses libxml2 or something else).Install the plugin named "XML" to get validation (you can put before the element to make it use the dtd automatically).Jedit – a "programmers" GUI editor (written in Java) with frillions of options and menus. ![]() This will insert a DOCTYPE line in your xml, but that's fine. To get validation you may have to click XML→Associate→System DTD and select dix.dtd from lttoolbox (typically in /usr/local/share/lttoolbox or /usr/share/lttoolbox).XML Copy Editor will check well-formedness (that you have your brackets and quotes in place) out of the box.XML Copy Editor – a simple GUI editor (written in C++) purely meant for XML.There's an XML validation plugin at but it only works with gedit2.sudo apt-get install gedit gedit-developer-plugins.Gedit – a simple GUI code editor (written in C/Python).Uses libxml2, so try to keep your validation errors below line 65535 :-).Does real XML validation with no setup required.Apertium-viewer – an apertium-specific GUI for testing sentences throughout the pipeline, and editing source files (written in Java).Some popular editors for XML – all the following can do XML syntax highlighting out of the box, which does indicate some well-formedness errors: Programs like apertium-validate-dictionary are also affected. Of the editors that use libxml2/xmllint for validation, there's a bug in libxml2 for files >65535 lines long. ![]() Not all editors are able to do full validation. t1x file should look like, and may tell you things like that "you've referred to a pardef that hasn't been defined".
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