media-gfx/enblend-4.1.1 fails to build its texinfo manual on my system. I guess that this is in part due to my using sys-apps/texinfo-5.1, but it would be good if someone could confirm this, so that we can add this problem here to the tracker bug #464362, and also report this upstream appropriately.

if /bin/sh /var/tmp/portage/media-gfx/enblend-4.1.1/work/enblend-enfuse-4.1.1/missing --run makeinfo -I .. -I .  -I . \
 -o enblend.info enblend.texi; \
then \
  rc=0; \
  CDPATH="${ZSH_VERSION+.}:" && cd .; \
else \
  rc=$?; \
  CDPATH="${ZSH_VERSION+.}:" && cd . && \
  $restore $backupdir/* `echo "./enblend.info" | sed 's|[^/]*$||'`; \
fi; \
rm -rf $backupdir; exit $rc
./auxmac.texi:9: warning: redefining Texinfo language command: @dmn
./auxmac.texi:119: warning: redefining Texinfo language command: @geq
./auxmac.texi:136: warning: redefining Texinfo language command: @leq
enblend.texi:451: bad syntax for @value
enblend.texi:451: misplaced {
enblend.texi:451: misplaced }
enblend.texi:511: warning: @ifinfo should only appear at a line beginning (possibly involving @power)
enblend.texi:511: warning: unknown @end docbook-pixel (possibly involving @power)
enblend.texi:513: warning: @ifinfo should only appear at a line beginning (possibly involving @classictimes)
enblend.texi:513: warning: unknown @end docbookheight (possibly involving @classictimes)
enblend.texi:591: bad syntax for @value
enblend.texi:592: bad syntax for @value
enblend.texi:594: @item outside of table or list
enblend.texi:595: @itemx outside of table or list
enblend.texi:600: bad syntax for @value
enblend.texi:600: misplaced {
enblend.texi:600: misplaced }
enblend.texi:604: bad syntax for @value
enblend.texi:606: @item outside of table or list
enblend.texi:621: @item outside of table or list
enblend.texi:622: @itemx outside of table or list
enblend.texi:659: bad syntax for @value
enblend.texi:661: @item outside of table or list
enblend.texi:662: @itemx outside of table or list
enblend.texi:670: @item outside of table or list
enblend.texi:671: @itemx outside of table or list
enblend.texi:1075: @item outside of table or list
enblend.texi:1081: `@end' expected `docbook', but saw `table'
enblend.texi:1081: `@end' expected `docbook', but saw `table'
enblend.texi:1197: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1199: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1201: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1213: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1215: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1217: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1239: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1241: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1243: warning: @ifinfo should only appear at a line beginning (possibly involving @semilog)
enblend.texi:1253: warning: @ifinfo should only appear at a line beginning (possibly involving @classictimes)
enblend.texi:1253: warning: unknown @end docbookHEIGHT (possibly involving @classictimes)
enblend.texi:1267: @item outside of table or list
enblend.texi:1280: @item outside of table or list
enblend.texi:1296: @item outside of table or list
enblend.texi:1313: @item outside of table or list
enblend.texi:1329: @item outside of table or list
enblend.texi:1338: `@end' expected `docbook', but saw `table'
enblend.texi:1366: bad syntax for @value
enblend.texi:1366: misplaced {
enblend.texi:1366: misplaced }
enblend.texi:1367: bad syntax for @value
enblend.texi:1367: misplaced {
enblend.texi:1367: misplaced }
enblend.texi:1369: bad syntax for @value
enblend.texi:1369: misplaced {
enblend.texi:1369: misplaced }
enblend.texi:1377: bad syntax for @value
enblend.texi:1377: misplaced {
enblend.texi:1377: misplaced }
enblend.texi:1548: bad syntax for @value
enblend.texi:1548: misplaced {
enblend.texi:1548: misplaced }
enblend.texi:1549: bad syntax for @value
enblend.texi:1549: misplaced {
enblend.texi:1549: misplaced }
enblend.texi:1556: warning: @ifinfo should only appear at a line beginning (possibly involving @geq)
enblend.texi:1556: bad syntax for @value
enblend.texi:1556: misplaced {
enblend.texi:1556: misplaced }
enblend.texi:1556: superfluous argument to @end docbook:  src::minimum-anneal-kmax. (possibly involving @geq)
enblend.texi:1558: bad syntax for @value
enblend.texi:1558: misplaced {
enblend.texi:1558: misplaced }
enblend.texi:1572: bad syntax for @value
enblend.texi:1572: misplaced {
enblend.texi:1572: misplaced }
enblend.texi:1575: bad syntax for @value
enblend.texi:1575: warning: @ifinfo should only appear at a line beginning (possibly involving @classictimes)
enblend.texi:1575: bad syntax for @value
enblend.texi:1575: misplaced {
enblend.texi:1575: misplaced }
enblend.texi:1575: misplaced }
enblend.texi:1575: warning: unknown @end docbooksrc (possibly involving @classictimes)
enblend.texi:1621: @item outside of table or list
enblend.texi:1633: warning: @ifinfo should only appear at a line beginning (possibly involving @geq)
enblend.texi:1633: bad syntax for @value
enblend.texi:1633: misplaced {
enblend.texi:1633: misplaced }
enblend.texi:1633: superfluous argument to @end docbook:  src::minimum-dijkstra-radius. (possibly involving @geq)
enblend.texi:1635: bad syntax for @value
enblend.texi:1637: @item outside of table or list
enblend.texi:1647: @item outside of table or list
enblend.texi:2243: bad syntax for @value
enblend.texi:2244: bad syntax for @value
enblend.texi:2256: @item outside of table or list
enblend.texi:2261: bad syntax for @value
enblend.texi:2266: @item outside of table or list
enblend.texi:2284: bad syntax for @value
enblend.texi:2309: warning: @ifinfo should only appear at a line beginning (possibly involving @geq)
enblend.texi:2309: bad syntax for @value
enblend.texi:2309: misplaced {
enblend.texi:2309: misplaced }
enblend.texi:2309: superfluous argument to @end docbook:  src::minimum-vectorize-distance. (possibly involving @geq)
enblend.texi:2312: bad syntax for @value
enblend.texi:2315: bad syntax for @value
enblend.texi:2316: bad syntax for @value
enblend.texi:2319: @item outside of table or list
enblend.texi:2335: @item outside of table or list
enblend.texi:2370: @item outside of table or list
enblend.texi:2395: bad syntax for @value
enblend.texi:2395: bad syntax for @value
enblend.texi:2408: @item outside of table or list
enblend.texi:2437: @item outside of table or list
enblend.texi:2438: @itemx outside of table or list
enblend.texi:2443: bad syntax for @value
enblend.texi:2477: @item outside of table or list
enblend.texi:2497: warning: @ifinfo should only appear at a line beginning (possibly involving @classictimes)
enblend.texi:2497: warning: unknown @end docbookFACTOR (possibly involving @classictimes)
enblend.texi:2500: warning: @ifinfo should only appear at a line beginning (possibly involving @geq)
enblend.texi:2500: bad syntax for @value
enblend.texi:2500: misplaced {
enblend.texi:2500: misplaced }
enblend.texi:2500: superfluous argument to @end docbook:  src::minimum-smooth-difference. (possibly involving @geq)
enblend.texi:2502: @item outside of table or list
enblend.texi:2508: bad syntax for @value
enblend.texi:2532: bad syntax for @value
enblend.texi:2539: bad syntax for @value
enblend.texi:2539: misplaced {
enblend.texi:2539: misplaced }
enblend.texi:2539: warning: @item missing argument
enblend.texi:2545: bad syntax for @value
enblend.texi:2545: misplaced {
enblend.texi:2545: misplaced }
enblend.texi:2545: warning: @item missing argument
enblend.texi:2548: bad syntax for @value
enblend.texi:2548: misplaced {
enblend.texi:2548: misplaced }
enblend.texi:2548: warning: @item missing argument
enblend.texi:2551: bad syntax for @value
enblend.texi:2551: misplaced {
enblend.texi:2551: misplaced }
enblend.texi:2551: warning: @item missing argument
enblend.texi:2554: bad syntax for @value
enblend.texi:2554: misplaced {
enblend.texi:2554: misplaced }
enblend.texi:2554: warning: @item missing argument
enblend.texi:2559: bad syntax for @value
enblend.texi:2559: misplaced {
enblend.texi:2559: misplaced }
enblend.texi:2559: warning: @item missing argument
enblend.texi:2562: bad syntax for @value
enblend.texi:2562: misplaced {
enblend.texi:2562: misplaced }
enblend.texi:2562: warning: @item missing argument
enblend.texi:2569: bad syntax for @value
enblend.texi:2570: bad syntax for @value
enblend.texi:2571: bad syntax for @value
enblend.texi:2571: bad syntax for @value
enblend.texi:2574: bad syntax for @value
enblend.texi:2574: misplaced {
enblend.texi:2574: misplaced }
enblend.texi:2574: warning: @item missing argument
enblend.texi:2638: `@end' expected `docbook', but saw `table'
enblend.texi:2638: `@end' expected `docbook', but saw `table'
enblend.texi:1575: @end table seen before @math closing brace
./bug-reports.texi:18: bad syntax for @value
./bug-reports.texi:18: misplaced {
./bug-reports.texi:18: misplaced }
./bug-reports.texi:81: warning: @ifinfo should only appear at a line beginning (possibly involving @classictimes)
./bug-reports.texi:81: misplaced }
./bug-reports.texi:81: warning: unknown @end docbook1000 (possibly involving @classictimes)
./bug-reports.texi:83: @item outside of table or list
./bug-reports.texi:87: @item outside of table or list
./bug-reports.texi:91: @item outside of table or list
./bug-reports.texi:95: @item outside of table or list
./bug-reports.texi:129: @item outside of table or list
./bug-reports.texi:137: `@end' expected `docbook', but saw `itemize'
./bug-reports.texi:80: @end itemize seen before @footnote closing brace
enblend.texi:1355: @ref reference to nonexistent node `Table:optimizer-strategies'
make[2]: *** [enblend.info] Error 1
make[2]: Leaving directory `/var/tmp/portage/media-gfx/enblend-4.1.1/work/enblend-enfuse-4.1.1/doc'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/media-gfx/enblend-4.1.1/work/enblend-enfuse-4.1.1'
make: *** [all] Error 2
emake failed