Filter Tests
============


== Toy filter example from User Guide

[code,python]
----------------------------------------------
''' A multi-line
    comment.'''
def sub_word(mo):
    ''' Single line comment.'''
    word = mo.group('word')   # Inline comment
    if word in keywords[language]:
        return quote + word + quote
    else:
        return word
----------------------------------------------


== Pychart Chart generations from FAQ

// Generate chart image file.
sys2::[python "{indir}/barchart.py" --format=png --output="{outdir={indir}}/{imagesdir=}{imagesdir?/}barchart.png" --scale=2]

// Display chart image file.
image::barchart.png[]


== Graphviz Graphs

.Simple graph
["graphviz", "graphviz1.png", alt="Graphviz->AsciiDoc->HTML"]
---------------------------------------------------------------------
digraph G { rankdir=LR; Graphviz->AsciiDoc->HTML}
---------------------------------------------------------------------

.Not so simple graph
["graphviz", "graphviz2.png"]
---------------------------------------------------------------------
digraph automata_0 {
  size ="8.5, 11";
  node [shape = circle];
  0 [ style = filled, color=lightgrey ];
  2 [ shape = doublecircle ];
  0 -> 2 [ label = "a " ];
  0 -> 1 [ label = "other " ];
  1 -> 2 [ label = "a " ];
  1 -> 1 [ label = "other " ];
  2 -> 2 [ label = "a " ];
  2 -> 1 [ label = "other " ];
  "Machine: a" [ shape = plaintext ];
}
---------------------------------------------------------------------


== Music filter

.A tune generated from ABC notation
[music,music1.png]
---------------------------------------------------------------------
T:The Butterfly
R:slip jig
C:Tommy Potts
H:Fiddle player Tommy Potts made this tune from two older slip jigs,
H:one of which is called "Skin the Peelers" in Roche's collection.
D:Bothy Band: 1975.
M:9/8
K:Em
vB2(E G2)(E F3)|B2(E G2)(E F)ED|vB2(E G2)(E F3)|(B2d) d2(uB A)FD:|
|:(vB2c) (e2f) g3|(uB2d) (g2e) (dBA)|(B2c) (e2f) g2(ua|b2a) (g2e) (dBA):|
|:~B3 (B2A) G2A|~B3 BA(uB d)BA|~B3 (B2A) G2(A|B2d) (g2e) (dBA):|
---------------------------------------------------------------------

<<X1,Link to following fragment>>.

[[X1]]
.A fragment generated from LilyPond source
["music", "music2.png", "ly", link="music2.ly"]
---------------------------------------------------------------------
\version "2.10.0"
\paper {
  ragged-right = ##t
}
{
  \time 3/4
  \clef bass
  c2 e4 g2. f4 e d c2 r4
}
---------------------------------------------------------------------