style: Move reader and printer to (guix read-print).

* guix/scripts/style.scm (<comment>, read-with-comments)
(vhashq, %special-forms, %newline-forms, prefix?)
(special-form-lead, newline-form?, escaped-string)
(string-width, canonicalize-comment, pretty-print-with-comments)
(object->string*): Move to...
* guix/read-print.scm: ... here.  New file.
* guix/scripts/import.scm: Adjust accordingly.
* tests/style.scm: Move 'test-pretty-print' and tests to...
* tests/read-print.scm: ... here.  New file.
* Makefile.am (MODULES): Add 'guix/read-print.scm'.
(SCM_TESTS): Add 'tests/read-print.scm'.

1 files changed, 2 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index e5363140fb7..2cda20e61c1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -130,6 +130,7 @@ MODULES =					\
   guix/cve.scm                                  \
   guix/workers.scm                              \
   guix/least-authority.scm                      \
+  guix/read-print.scm                           \
   guix/ipfs.scm                                 \
   guix/platform.scm                             \
   guix/platforms/arm.scm                        \
@@ -524,6 +525,7 @@ SCM_TESTS =					\
   tests/profiles.scm                            \
   tests/publish.scm                             \
   tests/pypi.scm                                \
+  tests/read-print.scm                          \
   tests/records.scm                             \
   tests/scripts.scm                             \
   tests/search-paths.scm                        \