gnu: Add ruby-cucumber-core. * gnu/packages/ruby.scm (ruby-cucumber-core): New variable.
substitute: Improve readability of download progress report. * guix/build/download.scm (string-pad-middle, store-url-abbreviation, store-path-abbreviation): New procedures. (progress-proc): Add #:abbreviation parameter and use it. Generate a better indeterminate progress string. * guix/scripts/substitute.scm (assert-valid-narinfo): Add newlines to output. (process-substitution): Use byte-count->string and store-path-abbreviation. Co-authored-by: Ludovic Courtès <ludo@gnu.org>
gnu: Add mafft. * gnu/packages/bioinformatics.scm (mafft): New variable.
gnu: Add keepassx. * gnu/packages/password-utils.scm (keepassx): New variable.
gnu: Add python-requests-mock. * gnu/packages/openstack.scm (python-requests-mock, python2-requests-mock): New variables.
gnu: Add python-webob. * gnu/packages/python.scm (python-webob, python2-webob): New variables.
gnu: Add python-oslo.context. * gnu/packages/openstack.scm (python-oslo.context, python2-oslo.context): New variables.
gnu: Add python-oslo.serialization. * gnu/packages/openstack.scm (python-oslo.serialization, python2-oslo.serialization): New variables.
gnu: sfarklib: Update to 2.24. * gnu/packages/compression.scm (sfarklib): Update to 2.24.
gnu: Add ruby-log4r. * gnu/packages/ruby.scm (ruby-log4r): New variable.
gnu: Add r-dbi. * gnu/packages/statistics.scm (r-dbi): New variable.
nls: Add "TRANSLATORS:" comment about Texinfo. * gnu/packages/abiword.scm: Add comment above 'description'.
doc: Add guidelines for synopses and descriptions. * doc/guix.texi (Synopses and Descriptions): New node. * doc/contributing.texi (Submitting Patches): Add item that cross-references it.
doc: Change authorship to "The GNU Guix Developers". * doc/guix.texi: Replace outdated @author list with just "The GNU Guix Developers".
gnu: Add r-lazyeval. * gnu/packages/statistics.scm (r-lazyeval): New variable.
gnu: Add r-assertthat. * gnu/packages/statistics.scm (r-assertthat): New variable.
gnu: Add ruby-gherkin3. * gnu/packages/ruby.scm (ruby-gherkin3): New variable.
lint: Add 'check-texinfo-markup' checker. * guix/script/lint.scm (check-description-style): Check for invalid Texinfo markup. * tests/lint.scm: Test it.
emacs: Add "View build log" action to build popup. * emacs/guix-command.el (guix-run-view-build-log): New function. (guix-command-additional-execute-arguments, guix-command-special-executors): Add entries for "View build log" action. * emacs/guix-utils.el (guix-find-file-or-url): New function.
emacs: Add modes for viewing build logs. * emacs/guix-build-log.el: New file. * emacs.am (ELFILES): Add it. * doc/emacs.texi (Emacs Build Log): Document it. New node. (Emacs Interface): Add it. * doc/guix.texi (Top): Likewise.