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Epsilon automatically enters HTML mode when you read a file with an
extension of .htm, .html, .shtml, .cfml, .cfm, .htx, .asp, .asa, .htt,
.jsp, .prx, .cfc, .asx, .ascx, or .aspx. It uses XML mode when you
read a file with an extension of .xml, .cdf, .osd, .wml, .xsl, .xst,
.xsd, .xmp, .rdf, .svg, .rss, .xsdconfig, .ui, .xaml,, .sgml, or .sgm,
or when a file identified as HTML has contents that suggest XML.
Everything about HTML mode below also applies to XML mode.
In HTML mode, Epsilon does appropriate syntax highlighting (including
indenting, and brace-matching. The commenting commands and
find-linked-file work too. The html-auto-fill-mode
variable controls whether Epsilon automatically breaks long lines as
you type. One bit disables this entirely, while others let you
customize which lines Epsilon can split (along with the
html-auto-fill-combine variable). The
html-auto-indent variable controls when Epsilon indents these
new lines (as well as lines you create by pressing <Enter>).
For XML mode, Epsilon uses the xml-auto-fill-mode,
xml-auto-fill-combine, and xml-auto-indent variables
The html-indenting-rules variable controls whether and how
Epsilon does smart indenting. The html-indent variable sets
the width of each level of indentation in HTML text; xml-indent
is used for XML.
The html-no-indent-elements variable lists HTML elements whose
contents shouldn't receive additional indentation, and the
html-paragraph-is-container buffer-specific variable helps
<p> tags correctly. Epsilon uses the
html-empty-elements and coldfusion-empty-elements
variables to decide which elements never use end tags. The
html-style-rules variable can be set to require that all empty
elements use self-terminating tags.
The html-reindent-previous-line variable, or for XML mode, the
xml-reindent-previous-line variable, controls whether those
modes reindent the current line when you press <Enter>.
When an HTML or XML file contains embedded scripting, Epsilon must
determine its language. If the file itself doesn't specify a
language (using a syntax like
<script language=jscript> or
<?php ?>, for instance), then Epsilon consults one of several
variables to choose a default script language. Each of the
variables in the table may be set to 1 for
PHP-style coloring, 4 for Python, 5 for CSS, 10 to ignore those
block start delimiters, or 0 for plain coloring of the block.
You can disable coloring of embedded scripting in cases where the
script language is explicitly specified by setting the
As you move about in an HTML or XML buffer, on the mode line Epsilon
displays the innermost tags in effect for the start of the current
line. (The html-display-nesting-width variable influences how
many tags will be shown.) It shows an open < to indicate
the line begins inside a tag, or
? to indicate a syntax problem
with the tag such as a missing >. Within embedded
scripting, it displays the current function's name, or the type of
scripting. Set the html-display-definition variable to
When the cursor is on a < or > character, Epsilon
will try to locate its matching > or < and
highlight them both. If the current character has no match, Epsilon
will not highlight it. Within a start tag or end tag, Epsilon will
use color to highlight it and its matching tag, using a different
color to indicate a mismatched tag. Set the variable
auto-show-html-delimiters to customize this.
Press Alt-Shift-L to display a list of all mismatched start or end
tags in the current buffer. The list appears in a grep buffer. See
the grep-mode command for navigation details.
When the cursor is at a start tag, you can press Alt-= to
have Epsilon move to its matching end tag, and vice versa.
Press Alt-Shift-F to move to the end of the current tag. If the tag
is a start tag, Epsilon moves to the end of its matching end tag.
Press Alt-Shift-B to move to the start of the current tag. On an end
tag, it moves to the beginning of its matching start tag. Outside a
tag, both commands move by words.
Press Alt-Shift-D to delete the current tag, and if it has a matching
end or start tag, that tag as well. Alt-Shift-E inserts an end tag
for the most recent start tag without one.
Mainly useful for XML, the Alt-Shift-R key sorts the attributes of the
current tag alphabetically by attribute name. With a highlighted
region, it sorts the attributes of each tag in the region, then aligns
corresponding attributes so they start at the same column in each tag.
Press Alt-i to display the element nesting in effect at point. This
is similar to the information Epsilon displays in the mode line, but
more complete. One difference: while the automatic mode line display
shows nesting in effect at the beginning of the current line, and
doesn't change as you move around within a line, this command uses the
current position within the line.
Epsilon can create an HTML version of syntax-highlighted text that
preserves its colors. See the copy-formatting-as-html
See PHP Mode for the similar PHP mode. Also see Internet Support for information on viewing http:// URLs with Epsilon.
Epsilon enters CSS mode when you read a file with a .css extension.
It also uses a flavor of CSS mode when cascading style sheet code is
embedded in an HTML file. CSS mode provides syntax highlighting,
commenting, smart indenting using the css-indent variable, and
delimiter highlighting using the auto-show-css-delimiters
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