Template:Mdash/doc

This is the mdash template, it looks like this " &mdash; ".

It works similarly to the html markup sequence " ". That is, a non-breaking space and then a long dash (known as an em dash).

and emdash redirect here and can be used as alternative names for this template.

This template is used when you want something a lot stronger than a bold middot "&middot;", a bullet "&bull;" or a ndash "–".

Normal usage
The recommended usage is to use no space before the template and one space after the template, like this:

Wine— Marble

It will render one space on each side of the dash, like this:


 * Wine &mdash; Marble

If it line breaks then the line break will come after the dash, not before, like this:


 * Wine &mdash;
 * Marble

For long dashed lists each list item can be put on its own line, with no spaces between each item and the template. Like this:

Wine— Marble— Crystal Glass— Sulphur

(It doesn't matter if there are no or some spaces at the end of the lines, after the templates.)

As before it will render one space on each side of the dashes, like this:


 * Wine &mdash; Marble &mdash; Crystal Glass &mdash; Sulphur

And if it line breaks then the line break will come after one of the dashes, not before, like this:


 * Wine &mdash; Marble &mdash;
 * Crystal Glass &mdash; Sulphur

But really, you should use bold middots "&middot;" or ndashes "–" for such lists.

Incorrect usage
If the template is used slightly wrong it will in some cases still behave well. For instance if there are no or several spaces after the template. Like these examples:

Wine—Marble Wine—  Marble

Both of them will render exactly as before, with just one space on each side of the dash, like this:


 * Wine &mdash; Marble

And it will still only line break after the dash, like this:


 * Wine &mdash;
 * Marble

But putting one or more spaces before the template will cause problems, like these examples:

Wine —Marble Wine  —Marble Wine — Marble Wine  —   Marble

Then it will render with two spaces before the dash, and one after, like this:


 * Wine &mdash; Marble

And if it line breaks it might break before the dash, like this:


 * Wine
 * &mdash; Marble

Technical details
The space before the dash is a non-breaking space. That means it will not line break and will not collapse together with normal spaces that come before the template.

The space after the dash is a normal space. That means it wraps (allows line breaks) and it will collapse together with normal spaces that come after the template to form one single space.