diff -ru src/part.c b/part.c
--- src/part.c	Thu May 14 06:01:00 2009 -0400
+++ b/part.c 	Thu May 14 06:01:00 2009 -0400
@@ -1767,8 +1767,8 @@
 /* to compute number of partitions */
 {
     INT erg = OK;
-    if (ni<0) return;
-    if (not EMPTYP(S_V_I(vec,ni))) return;
+    if (ni<0) return 0;
+    if (not EMPTYP(S_V_I(vec,ni))) return 0;
     else if (ni<=1) M_I_I(1,S_V_I(vec,ni));
     else {
     
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<div class='path'>path: <a href='/guix/log/?id=77ae41457c55e2f1f9008faff384cf912782be7a'>root</a>/<a href='/guix/log/gnu?id=77ae41457c55e2f1f9008faff384cf912782be7a'>gnu</a>/<a href='/guix/log/gnu/packages?id=77ae41457c55e2f1f9008faff384cf912782be7a'>packages</a>/<a href='/guix/log/gnu/packages/docbook.scm?id=77ae41457c55e2f1f9008faff384cf912782be7a'>docbook.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/docbook.scm?id=77ae41457c55e2f1f9008faff384cf912782be7a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-14 23:15:22 +0200'>2020-06-14</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=bf7321cc9171a0b4145debd770666efafe0b2f24'>gnu: docbook: Add 5.0.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/docbook.scm (docbook-xml-5): New public variable.
(docbook-xml): Inherit from it.  While at it, remove trailing whitespace.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-01-21 22:39:42 +0100'>2020-01-21</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=8ed9be3faccb865204de46d2a8ed3e96e59281b6'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-01-19 06:09:01 +0100'>2020-01-19</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=e6711212505f5426a6f5707445b04a14e17e55ee'>gnu: Use HTTPS for docbook.org.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/docbook.scm (docbook-xml)[home-page, source]: Use HTTPS.
(docbook-xml-4.4, docbook-xml-4.3, docbook-xml-4.2, docbook-xml-4.1.2)
[source]: Likewise.
(docbook-xsl)[home-page]: Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-01-11 18:59:23 +0100'>2020-01-11</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=8419a7ed44ee86e1b93b9dd1779c9ab192f98175'>gnu: dblatex: Update to 0.3.11.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/docbook.scm (dblatex): Update to 0.3.11.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-07-24 09:46:49 +0200'>2019-07-24</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=f75aa97f9535170f581f780acec05a2c4298d4ba'>gnu: Replace uses of texlive-*-amsfonts.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/algebra.scm (pari-gp)[native-inputs]: Replace
texlive-fonts-amsfonts and texlive-latex-amsfonts with texlive-amsfonts in
texlive-union.
* gnu/packages/docbook.scm (dblatex)[inputs]: Same.
* gnu/packages/plotutils.scm (asymptote)[native-inputs]: Same.
* gnu/packages/python-xyz.scm (python-numpy-documentation,
python-matplotlib-documentation, python-ipython-documentation)
[native-inputs]: Same.
* gnu/packages/statistics.scm (r-with-tests)[native-inputs]: Same.
* gnu/packages/tex.scm (teximpatient)[native-inputs]: Same.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-07-24 20:53:18 +0200'>2018-07-24</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=52f1687dc7bbe0928f801ab2f1a9e3716930e150'>gnu: docbook-xsl: Delete bundled jars.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/docbook.scm (docbook-xsl)[source](modules, snippet): New fields.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2018-03-27 21:35:41 -0400'>2018-03-27</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=e3cfef22c4a18cacf33356a70788503fd689b96d'>gnu: Use invoke and return #t from all builders.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/admin.scm, gnu/packages/android.scm, gnu/packages/audio.scm,
gnu/packages/avr.scm, gnu/packages/base.scm, gnu/packages/bioinformatics.scm,
gnu/packages/certs.scm, gnu/packages/check.scm, gnu/packages/code.scm,
gnu/packages/commencement.scm, gnu/packages/dictionaries.scm,
gnu/packages/docbook.scm, gnu/packages/emacs.scm, gnu/packages/embedded.scm,
gnu/packages/fonts.scm, gnu/packages/games.scm, gnu/packages/gnome.scm,
gnu/packages/gnu-doc.scm, gnu/packages/guile.scm, gnu/packages/hurd.scm,
gnu/packages/javascript.scm, gnu/packages/libreoffice.scm,
gnu/packages/linux.scm, gnu/packages/lisp.scm, gnu/packages/lxde.scm,
gnu/packages/mail.scm, gnu/packages/markup.scm, gnu/packages/mate.scm,
gnu/packages/pkg-config.scm, gnu/packages/qt.scm, gnu/packages/rust.scm,
gnu/packages/scheme.scm, gnu/packages/sdl.scm, gnu/packages/statistics.scm,
gnu/packages/syncthing.scm, gnu/packages/tex.scm, gnu/packages/web.scm,
gnu/packages/wine.scm, gnu/packages/xfce.scm: In the builders of packages
using 'trivial-build-system', use invoke where appropriate, raise exceptions
on errors, and otherwise return #t.
</span></span></td><td>Mark H Weaver</td></tr>
<tr><td><span title='2018-03-14 17:37:20 +0100'>2018-03-14</span></td><td><a href='/guix/commit/gnu/packages/docbook.scm?id=8c72ed923d77ee55989965bb02628043799b9548'>Merge branch 'master' into core-updates</a></td><td>Ricardo Wurmus</td></tr>