Propagate source font modification time to svg during conversion.  Similar to
what upstream commit 95a470e941d9a20fbdaca51334e8b6b9d93cfae4 did for TTF
files.

Submitted upstream at http://github.com/fontforge/fontforge/pull/2696

--- a/fontforge/svg.c
+++ b/fontforge/svg.c
@@ -27,7 +27,6 @@
 #include "fontforgevw.h"
 #include <unistd.h>
 #include <math.h>
-#include <time.h>
 #include <locale.h>
 #include <utype.h>
 #include <chardata.h>
@@ -62,7 +61,6 @@ static int svg_outfontheader(FILE *file, SplineFont *sf,int layer) {
     BlueData bd;
     char *hash, *hasv, ch;
     int minu, maxu, i;
-    time_t now;
     const char *author = GetAuthor();
 
     memset(&info,0,sizeof(info));
@@ -78,9 +76,8 @@ static int svg_outfontheader(FILE *file, SplineFont *sf,int layer) {
 	fprintf( file, "\n-->\n" );
     }
     fprintf( file, "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" version=\"1.1\">\n" );
-    time(&now);
     fprintf( file, "<metadata>\nCreated by FontForge %d at %s",
-	    FONTFORGE_VERSIONDATE_RAW, ctime(&now) );
+	    FONTFORGE_VERSIONDATE_RAW, ctime((time_t*)&sf->modificationtime) );
     if ( author!=NULL )
 	fprintf(file," By %s\n", author);
     else
7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>tree</a><a class='active' href='/guix/commit/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>commit</a><a href='/guix/diff/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu'>
<input type='hidden' name='id' value='9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/commit/?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>root</a>/<a href='/guix/commit/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>gnu</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ricardo Wurmus &lt;rekado@elephly.net&gt;</td><td class='right'>2022-11-29 15:22:23 +0100</td></tr>
<tr><th>committer</th><td>Ricardo Wurmus &lt;rekado@elephly.net&gt;</td><td class='right'>2022-11-29 15:27:26 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/guix/commit/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16</a> (<a href='/guix/patch/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/guix/tree/?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>ae2e7ed34cd50cf67ccad8f4086978f510058ece</a> /<a href='/guix/tree/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>gnu</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/gnu?id=ce8c44d0c30a1a2883a8c7cabc5cbfc1f9bafcfa'>ce8c44d0c30a1a2883a8c7cabc5cbfc1f9bafcfa</a> (<a href='/guix/diff/gnu?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16&amp;id2=ce8c44d0c30a1a2883a8c7cabc5cbfc1f9bafcfa'>diff</a>)</td></tr><tr><th>download</th><td colspan='2' class='oid'><a href='/guix/snapshot/guix-9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16.tar.gz'>guix-9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16.tar.gz</a><br/><a href='/guix/snapshot/guix-9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16.zip'>guix-9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16.zip</a><br/></td></tr></table>
<div class='commit-subject'>gnu: r-rngwell: Update to 0.10-8.</div><div class='commit-msg'>* gnu/packages/cran.scm (r-rngwell): Update to 0.10-8.
</div><div class='diffstat-header'><a href='/guix/diff/?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>Diffstat</a> (limited to 'gnu')</div><table summary='diffstat' class='diffstat'><tr><td class='mode'>-rw-r--r--</td><td class='upd'><a href='/guix/diff/gnu/packages/cran.scm?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>gnu/packages/cran.scm</a></td><td class='right'>4</td><td class='graph'><table summary='file diffstat' width='4%'><tr><td class='add' style='width: 50.0%;'/><td class='rem' style='width: 50.0%;'/><td class='none' style='width: 0.0%;'/></tr></table></td></tr>
</table><div class='diffstat-summary'>1 files changed, 2 insertions, 2 deletions</div><table summary='diff' class='diff'><tr><td><div class='head'>diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm<br/>index 2c0073f171..dd7b3e784e 100644<br/>--- a/<a href='/guix/tree/gnu/packages/cran.scm?id=ce8c44d0c30a1a2883a8c7cabc5cbfc1f9bafcfa'>gnu/packages/cran.scm</a><br/>+++ b/<a href='/guix/tree/gnu/packages/cran.scm?id=9f7cd46b00ed26881d8cf5c793e0bd1f8b14ab16'>gnu/packages/cran.scm</a></div>