Some empty "" chords may be causing trouble with Jenkins.

Jenkins builds are stalling when generating PDFs for some morris tunes. I suspect the problem
may be an empty chord "" and abc2abc's attempt to transpose it.

I've been meaning to remove the chords from the horn output, because abc2abc transposes them too,
which renders them not terribly useful. So get on and do it. Also remove "" from the morris
tunes where it occurs.

Morris/HasteToTheWedding.abc

@@ -8,5 +8,5 @@ P:A
 F/2G/2|"D"A2A A2f|"G"ede fdB|"D"A2A AGF|"Em"GFG "A7"EFG|
 "D"A2A A2f|"G"ede fdB|"D"A2A "A7"a2g|"D"fdd d2:|
 P:B
-d/2e/2|"D"fga " ""B7"agf|"Em"gab "A7"bag|"D"fga " ""B7"agf|
+d/2e/2|"D"fga "B7" agf | "Em" gab "A7" bag |"D" fga "B7" agf|
 "G"gfg "A7"efg|"D"a3 "Bm"f3|"G"ede fdB|"D"A2A "A7"a2g|"D"fdd d2:|

Morris/LadsABunchum.abc

@@ -9,12 +9,12 @@ P:A.(AB)6B
 K:G
 I:speed 400
 P:A
-" " |: A2 | "G" B2 B2    Bcde           | "C" c2 A2   "D7" A2 Bc |
+A2 | "G" B2 B2    Bcde           | "C" c2 A2   "D7" A2 Bc |
 w: *    Oh   dear  moth-er, what a  fool  I     be,
 w: *    Five were  blind_ and the   other couldn't see,
 "G" d2 d2  "D7" dcBA         | "G" B2    G2       G2    :|
 w: Six  young mai-dens come a  court-in'      me.
 w: oh   dear  moth-er, what a  fool  I        be!
 P:B
-"" |: gf | "C" e2 d2 "G" d2 GA | "G" B2 B2 B2 gf | e2 d2 c2 B2 |\
+gf | "C" e2 d2 "G" d2 GA | "G" B2 B2 B2 gf | e2 d2 c2 B2 |\
 "D7" A2 G2 "G" G2 :|

Morris/PostmansKnock.abc

@@ -9,7 +9,7 @@ L:1/16
 K:D
 I:speed 500
 P:A
-"" D3D | "D" D2F2G2 A4 F2  | "Em" G2A2B2 "D" A4 A2 | "D" d2A2G2 "Bm" F2E2D2 |\
+D3D | "D" D2F2G2 A4 F2  | "Em" G2A2B2 "D" A4 A2 | "D" d2A2G2 "Bm" F2E2D2 |\
 "E7" E6-E4 "A" D2 | "D" D2E2F2 A2A2A2 |
 "Em" G2A2B2 "D" A4 F2 | "D" E2d2c2 "E7" B2A2^G2 | "A" A6-A2 A3A |\
 "D" A2G2F2 F2d2d2 | "D" d2D2E2 F4 F2 |

Morris/Shooting.abc

@@ -7,7 +7,7 @@ L: 1/8
 P: 6(2A.3B)
 K: G
 P: A
-"" D | "G" G2 G BAG B<dD | GDG B2 "D" A A2 D |\
+D | "G" G2 G BAG B<dD | GDG B2 "D" A A2 D |\
     "G" G2 G BAG B<dD | GDG B2 "D" A "G" G3 :|
 P: B
 "G" d2 c B>AG B/d-d | "D" A2 A A2 "G" B "D" c3 |\

Morris/SweetJennyJones.abc

@@ -8,13 +8,13 @@ P:A(AB)6.A
 K:D
 I:speed 450
 P:A
-""  A2 | "D" d2 A2 F2 | "D" D3 E  F2 | "Em" G2 B2 e2 | "A7" c2  A2
+   A2 | "D" d2 A2 F2 | "D" D3 E  F2 | "Em" G2 B2 e2 | "A7" c2  A2
 w: My   sweet Jen- ny   Jones she's the  pride of Lan-gol-len
    c2 | "D" d2 A2 F2 | "G" G2>A2 B2 | "A7" A2 d2 c2 | "D" d4       ||
 w: My  sweet Jen- ny   Jones she's the  girl  I  a-   dore.
 w: My  sweet Jen- ny   Jones she's the  girl  I  love   best.
 P:B
-"" de | "D" f2 d2 f2 | "A7" e2 c2 A2 | "G" d2 B2 d2 | "A7" c2 A2 \
+   de | "D" f2 d2 f2 | "A7" e2 c2 A2 | "G" d2 B2 d2 | "A7" c2 A2 \
    de | "D" f2 d2 f2 | "A7" e2 c2 A2 | "G" d2 c2 B2 | "A7" A4
    Bc | "D" d2 A2 F2 | "D" D3  E F2 | "Em" G2 B2 e2 | "A7" c2 A2 \
    Bc | "D" d2 A2 F2 | "G" G3 A B2 | "A7" A2 d2 c2 | "D" d4 z2 ||

makeHornInF.sh

@@ -39,11 +39,17 @@ find $booke -name "*.abc" | sort |
             transpose=-7
         fi
 
+        # There's no point in having transposed chords. Remove from the
+        # abc before transposing. Some badly formed chord items can give
+        # erroneous output from abc2abc (like, strings of binary gibberish).
+        sed -e "s/\"[^\"]*\"//g" $filename > $outdir/$name.abc.tmp
+
         # Transpose. By default abc2abc will report errors in the output,
         # but this messes up output formatting so stop it. Also force all
         # output to be in treble clef; some lower tunes with the odd high
         # note will otherwise appear in bass clef, which is not what this
         # crap horn player wants.
-        abc2abc $filename -e -t $transpose | \
+        abc2abc $outdir/$name.abc.tmp -e -t $transpose | \
             sed -e "/^ *K:/s/$/ clef=treble/" > $outdir/$name.abc
+        rm $outdir/$name.abc.tmp
     done