Use pretty-simple to format native output.

Previously we used our own homespun formatting.  But this
produces over-long lines that aren't ideal for diffs in tests.
Easier to use something off-the-shelf and standard.

Closes #7580.

Performance is slower by about a factor of 10, but this isn't
really a problem because native isn't suitable as a serialization
format. (For serialization you should use json, because the reader
is so much faster than native.)

1 files changed, 6 insertions, 6 deletions

diff --git a/test/writer.context b/test/writer.context
index 78667813b..ae45d1580 100644
--- a/test/writer.context
+++ b/test/writer.context
@@ -643,8 +643,8 @@ Superscripts: a\high{bc}d a\high{{\em hello}} a\high{hello~there}.
 
 Subscripts: H\low{2}O, H\low{23}O, H\low{many~of~them}O.
 
-These should not be superscripts or subscripts, because of the unescaped
-spaces: a^b c^d, a\lettertilde{}b c\lettertilde{}d.
+These should not be superscripts or subscripts, because of the unescaped spaces:
+a^b c^d, a\lettertilde{}b c\lettertilde{}d.
 
 \thinrule
 
@@ -878,10 +878,10 @@ Here is a movie {\externalfigure[movie.jpg]} icon.
 
 \section[title={Footnotes},reference={footnotes}]
 
-Here is a footnote reference,\footnote{Here is the footnote. It can go
-  anywhere after the footnote reference. It need not be placed at the end of
-  the document.} and another.\startbuffer Here's the long note. This one
-  contains multiple blocks.
+Here is a footnote reference,\footnote{Here is the footnote. It can go anywhere
+  after the footnote reference. It need not be placed at the end of the
+  document.} and another.\startbuffer Here's the long note. This one contains
+  multiple blocks.
 
   Subsequent blocks are indented to show that they belong to the footnote (as
   with list items).