Would like to extract just parts of a file

[ralfw]

I'd like to extract just a range of lines from a source code file. The syntax could look like this:

{% codesnippet "./myfile.js", linerange="10-12" %}{% endcodesnippet %}

Ideally I could even specify multiple line ranges, eg:

{% codesnippet "./myfile.js", linerange="10-12, 14, 17-18" %}{% endcodesnippet %}

The ranges would be separated by a line containing just "...", eg:

Line 10
Line 11
Line 12
...
Line 14
...
Line 17
Line 18

[nagim]

Another "upgrade" to this could be the possibility to "latch onto" some control characters/tags in the source code file, so the referenced part will be the same even if the line numbers changed (if code is added/removed in the file).
This would be like the AsciiDoc feature (example), which would be welcomed by a lot of people (myself included 😄).

[ralfw]

I'd like that, too :-) Example:

{% codesnippet "./myfile.js", tags="#1234,#9876" %}{% endcodesnippet %}

I think there's even no need for a prefix in the source for for opening/closing a tagged range. Each region would just start with a tag and end whenever the same tag appears agains, e.g.

a
b
#1234
c
d
#1234
e
#9876
f
#9876

would be included as

c
d
...
f

[ralfw]

Just saw, a fix has been introduced for this. Great! But it comes with a small bug. Pls see my inline comment on the committed code.

[sbaechler]

I noticed that currently the lines property seems to fetch the wrong lines. In the example below the lines 93 to 108 have been included.

{% codesnippet "https://raw.githubusercontent.com/sbaechler/polygon/master/src/Hexagon.elm", lines="76:89", language="elm" %}{% endcodesnippet %}

https://sbaechler.gitbooks.io/elm-hexagon/content/v/096ebfc78082d42142074cf98fa0638b0bf0e267/doc/2-dancefloor.html
https://github.com/sbaechler/polygon/blob/master/src/Hexagon.elm

[sbaechler]

It looks like your Regex is ignoring empty lines: http://stackoverflow.com/questions/5034781/js-regex-to-split-by-line