Fix 'scheme-indent-function' to indent s-expressions starting with a keyword
properly, like this:

(#:foo 1
 #:bar 2)

instead of like this:

(#:foo 1
       #:bar 2)

The fix is made by Mark H Weaver <mhw@netris.org>:
<http://www.netris.org/~mhw/scheme-indent-function.el>

--- a/lisp/progmodes/scheme.el
+++ b/lisp/progmodes/scheme.el
@@ -494,6 +494,12 @@ indentation."
                         (> (length function) 3)
                         (string-match "\\`def" function)))
                (lisp-indent-defform state indent-point))
+              ((and (null method)
+                    (> (length function) 1)
+                    ;; The '#' in '#:' seems to get lost, not sure why
+                    (string-match "\\`:" function))
+               (let ((lisp-body-indent 1))
+                 (lisp-indent-defform state indent-point)))
               ((integerp method)
                (lisp-indent-specform method state
                                      indent-point normal-indent))
s'><tr><td>
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<div class='path'>path: <a href='/guix/log/?id=4688c9f52d0f998add29049606db5e7b0655c8eb'>root</a>/<a href='/guix/log/etc?id=4688c9f52d0f998add29049606db5e7b0655c8eb'>etc</a>/<a href='/guix/log/etc/guix-daemon.service.in?id=4688c9f52d0f998add29049606db5e7b0655c8eb'>guix-daemon.service.in</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/etc/guix-daemon.service.in?id=4688c9f52d0f998add29049606db5e7b0655c8eb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-06-05 11:48:55 +0200'>2019-06-05</span></td><td><a href='/guix/commit/etc/guix-daemon.service.in?id=579d17b70dac067f8194ede46513400b91ac136a'>etc: guix-daemon.service.in: Fix GUIX_LOCPATH quoting.</a><span class='msg-avail'>...</span></td><td>Jack Hill</td></tr>
<tr><td><span title='2019-05-13 23:46:08 +0200'>2019-05-13</span></td><td><a href='/guix/commit/etc/guix-daemon.service.in?id=489d6c0dc03f1d95a3fefa6301f36cac9b50b2c3'>Set 'LC_ALL=en_US.utf8' in systemd '.service' files.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-11-23 15:42:01 +0100'>2018-11-23</span></td><td><a href='/guix/commit/etc/guix-daemon.service.in?id=e9926f80c6553fde50ce1fcfd38d6370f841efd2'>build: Binary tarball now populates the "current-guix" profile.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>