From 6305d5c64716f79d5af56b4cd19fa0f2151ececa Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 11 Apr 2016 04:20:55 +0530
Subject: [PATCH] E-book viewer: Fix a link that has some text along with a
 superscript/subscript being incorrectly detected as a footnote link

---
 resources/compiled_coffeescript.zip           | Bin 106998 -> 107465 bytes
 src/calibre/ebooks/oeb/display/extract.coffee |   4 +++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/resources/compiled_coffeescript.zip b/resources/compiled_coffeescript.zip
index 5532c771a9b381b38b8b03e8348f4ba1282d021a..e1bd571cd8ec6f47fc4765296a15e7b91be94096 100644
GIT binary patch
delta 544
zcmex%nC;|owheBHd|67}9-1CKW$QH=7}je})?Xz#y<rX`*XHuXJRaVX)QXb$<c!Rm
zl%mwU&5v^>Sy6>1U#u0KoUoH^^0fkfDN`MVqSWHjoRVT|E(JI!N=-AJ{=l12VlscB
z)Z|4wg(qdPF`7=cFH{r-si{z~1?oyOjn0aN=$f2cs4!XKAg^?VUS57mYFJ`UX{v&n
znu2~zu(rNlNosM4M#bcSgW{9t#&AsLPiLL<kBzZnvSPaF<Oww_Y7lE{H8nI5Zpchi
z&`?D2$#nl2jG~j{Ca_PxpUlWJJ*JzHYx05#?9F1u+r^3*O*PR1WqRZs#%LzB?&*PZ
z8AYd`p2KLtv}!7ZBQ=-Nl<C!K5XY10?OurB#<`3}%*7gvlM6aUrXN_y$T6L19-|i1
z7Q5+s^BCQkBt52=&tvpv5lCcYn69&cQARw#o0W|L2)Kao6%zx)>A8#y|Cp+$3oc|7
znf`4)qvP~|`9M>EMww1OumI==p81SE(^VHTx=ug0fRTN=-2w<Jd^*rQ+|z3pGCG5t
z$u~W1K4YLpN|LF8foXDLnt^$uiE(mDa<W;9rICrHky%P=s-?MEim9owVXB4cbjSIO
N;?uhqFq$&f0s!8Qu_*um

delta 319
zcmX?kobB6TwheBHf{#M$JvPjZx_L*PfdPbNCp&hFZO%=s;Mx2oSDbY^uMQ*o^z*ii
zJd@`M@HD?G+5WDC(Lj?ARoir(d5qCa!JX6lH5f&w&zr|+!E}8xg!6VDqbZa4DhOx)
zLPoCX&hr_yn56bh&!5le&b&a4ary)eMw#hXL81?BrZX;JbZ2sN1JNSW;}$TQGug&N
zI1Y(G&07~R3b6l}&B*YNsd{?CLdJNIZG6+27c&NGBw1LbTBew#85o+R8l)zf7@Hd>
zrX?kr7?=VD5-rRP(h`jl4bxJlPguk#KK;Q0M#t#^i-5iZ8!Wnr(R%v)MT{Ji<@Rw*
ipS_q-ce>Le#?<LRC%b~g!=|5|&&V;|a3P~EV=VwPWpC&J

diff --git a/src/calibre/ebooks/oeb/display/extract.coffee b/src/calibre/ebooks/oeb/display/extract.coffee
index 3e1b96a035..33247fd48d 100644
--- a/src/calibre/ebooks/oeb/display/extract.coffee
+++ b/src/calibre/ebooks/oeb/display/extract.coffee
@@ -75,7 +75,9 @@ is_footnote_link = (node, url, linked_to_anchors) ->
     if children.length == 1
         style = window.getComputedStyle(children[0])
         if style.display in ['inline', 'inline-block'] and style.verticalAlign in ['sub', 'super', 'top', 'bottom']
-            return true
+            text_children = (x for x in node.childNodes when x.nodeType == Node.TEXT_NODE and x.nodeValue and /\S+/.test(x.nodeValue))
+            if not text_children.length
+                return true
 
     eid = node.getAttribute('id') or node.getAttribute('name')
     if eid and linked_to_anchors.hasOwnProperty(eid)