diff --git a/autotests/folding/test.bash.fold b/autotests/folding/test.bash.fold
--- a/autotests/folding/test.bash.fold
+++ b/autotests/folding/test.bash.fold
@@ -10,3 +10,14 @@
 
 pacman -Syu --needed intel-ucode grub
 pacman -syu --needed intel-ucode grub
+
+# Braces (bug ##387915)
+<beginfold id='1'>[[</beginfold id='1'> $line_name =~ \{([0-9]{1,})\}\{([0-9]{1,})\}(.*)<endfold id='1'> ]]</endfold id='1'>
+<beginfold id='1'>[[</beginfold id='1'> $name =~ (.*)_(S[0-9]{2})(E[0-9]{2,3}[a-z]{0,1})_(.*)<endfold id='1'> ]]</endfold id='1'>
+rm /data/{hello1,hello2}/input/{bye1,$bye2}/si{a,${b},c{k,p{e,a}}}/*.non
+rm /data/{aa,{e,i}t{b,c} # Not closed
+rm /data{aa{bb{cc{dd}}}}
+rm /data{aaa`aaa}aa`aaa}a
+
+${array[0]: -7 : +  22  }  ${array[1]: num  }
+${parameter##word} ${parameter%%word} ${parameter^^pattern} ${parameter,,pattern} ${parameter@operator}
diff --git a/autotests/html/test.bash.html b/autotests/html/test.bash.html
--- a/autotests/html/test.bash.html
+++ b/autotests/html/test.bash.html
@@ -16,4 +16,15 @@
 
 <span style="color:#0095ff;font-weight:bold;">pacman</span> -Syu --needed intel-ucode grub
 <span style="color:#0095ff;font-weight:bold;">pacman</span> -syu --needed intel-ucode grub
+
+<span style="color:#898887;"># Braces (bug ##387915)</span>
+<span style="font-weight:bold;">[[</span> <span style="color:#0057ae;">$line_name</span> =~ <span style="color:#0057ae;">\{</span>([0-9]<span style="color:#0057ae;">{1,}</span>)<span style="color:#0057ae;">\}\{</span>([0-9]<span style="color:#0057ae;">{1,}</span>)<span style="color:#0057ae;">\}</span>(.*)<span style="font-weight:bold;"> ]]</span>
+<span style="font-weight:bold;">[[</span> <span style="color:#0057ae;">$name</span> =~ (.*)_(S[0-9]<span style="color:#0057ae;">{2}</span>)(E[0-9]<span style="color:#0057ae;">{2,3}</span>[a-z]<span style="color:#0057ae;">{0,1}</span>)_(.*)<span style="font-weight:bold;"> ]]</span>
+<span style="color:#644a9b;">rm</span> /data/<span style="color:#0057ae;">{hello1,hello2}</span>/input/<span style="color:#0057ae;">{bye1,</span><span style="color:#0057ae;">$bye2</span><span style="color:#0057ae;">}</span>/si<span style="color:#0057ae;">{a,</span><span style="color:#0057ae;">${b}</span><span style="color:#0057ae;">,c{k,p{e,a}}}</span>/*.non
+<span style="color:#644a9b;">rm</span> /data/{aa,<span style="color:#0057ae;">{e,i}</span>t<span style="color:#0057ae;">{b,c}</span> <span style="color:#898887;"># Not closed</span>
+<span style="color:#644a9b;">rm</span> /data<span style="color:#0057ae;">{aa{bb{cc{dd}}}}</span>
+<span style="color:#644a9b;">rm</span> /data<span style="color:#0057ae;">{aaa</span><span style="font-weight:bold;">`</span><span style="color:#0095ff;font-weight:bold;">aaa</span>}<span style="color:#0095ff;font-weight:bold;">aa</span><span style="font-weight:bold;">`</span><span style="color:#0057ae;">aaa}</span>a
+
+<span style="color:#0057ae;">${array[0]: -7 : +  22  }</span>  <span style="color:#0057ae;">${array[1]: num  }</span>
+<span style="color:#0057ae;">${parameter##</span>word<span style="color:#0057ae;">}</span> <span style="color:#0057ae;">${parameter%%</span>word<span style="color:#0057ae;">}</span> <span style="color:#0057ae;">${parameter^^</span>pattern<span style="color:#0057ae;">}</span> <span style="color:#0057ae;">${parameter,,</span>pattern<span style="color:#0057ae;">}</span> <span style="color:#0057ae;">${parameter@</span>operator<span style="color:#0057ae;">}</span>
 </pre></body></html>
diff --git a/autotests/input/test.bash b/autotests/input/test.bash
--- a/autotests/input/test.bash
+++ b/autotests/input/test.bash
@@ -10,3 +10,14 @@
 
 pacman -Syu --needed intel-ucode grub
 pacman -syu --needed intel-ucode grub
+
+# Braces (bug ##387915)
+[[ $line_name =~ \{([0-9]{1,})\}\{([0-9]{1,})\}(.*) ]]
+[[ $name =~ (.*)_(S[0-9]{2})(E[0-9]{2,3}[a-z]{0,1})_(.*) ]]
+rm /data/{hello1,hello2}/input/{bye1,$bye2}/si{a,${b},c{k,p{e,a}}}/*.non
+rm /data/{aa,{e,i}t{b,c} # Not closed
+rm /data{aa{bb{cc{dd}}}}
+rm /data{aaa`aaa}aa`aaa}a
+
+${array[0]: -7 : +  22  }  ${array[1]: num  }
+${parameter##word} ${parameter%%word} ${parameter^^pattern} ${parameter,,pattern} ${parameter@operator}
diff --git a/autotests/reference/test.bash.ref b/autotests/reference/test.bash.ref
--- a/autotests/reference/test.bash.ref
+++ b/autotests/reference/test.bash.ref
@@ -10,3 +10,14 @@
 <Normal Text></Normal Text><br/>
 <OtherCommand>pacman</OtherCommand><Normal Text> </Normal Text><Option>-Syu</Option><Normal Text> </Normal Text><Option>--needed</Option><Normal Text> intel-ucode grub</Normal Text><br/>
 <OtherCommand>pacman</OtherCommand><Normal Text> </Normal Text><Option>-syu</Option><Normal Text> </Normal Text><Option>--needed</Option><Normal Text> intel-ucode grub</Normal Text><br/>
+<Normal Text></Normal Text><br/>
+<Comment># Braces (bug ##387915)</Comment><br/>
+<Keyword>[[</Keyword><Normal Text> </Normal Text><Variable>$line_name</Variable><Normal Text> =</Normal Text><Path>~</Path><Normal Text> </Normal Text><Escape>\{</Escape><Normal Text>([0-9]</Normal Text><Escape>{1,}</Escape><Normal Text>)</Normal Text><Escape>\}\{</Escape><Normal Text>([0-9]</Normal Text><Escape>{1,}</Escape><Normal Text>)</Normal Text><Escape>\}</Escape><Normal Text>(.*)</Normal Text><Keyword> ]]</Keyword><br/>
+<Keyword>[[</Keyword><Normal Text> </Normal Text><Variable>$name</Variable><Normal Text> =</Normal Text><Path>~</Path><Normal Text> (.*)_(S[0-9]</Normal Text><Escape>{2}</Escape><Normal Text>)(E[0-9]</Normal Text><Escape>{2,3}</Escape><Normal Text>[a-z]</Normal Text><Escape>{0,1}</Escape><Normal Text>)_(.*)</Normal Text><Keyword> ]]</Keyword><br/>
+<Command>rm</Command><Normal Text> </Normal Text><Path>/data</Path><Normal Text>/</Normal Text><Escape>{hello1,hello2}</Escape><Path>/input</Path><Normal Text>/</Normal Text><Escape>{bye1,</Escape><Variable>$bye2</Variable><Escape>}</Escape><Normal Text>/si</Normal Text><Escape>{a,</Escape><Variable>${b}</Variable><Escape>,c{k,p{e,a}}}</Escape><Path>/*.non</Path><br/>
+<Command>rm</Command><Normal Text> </Normal Text><Path>/data</Path><Normal Text>/{aa,</Normal Text><Escape>{e,i}</Escape><Normal Text>t</Normal Text><Escape>{b,c}</Escape><Normal Text> </Normal Text><Comment># Not closed</Comment><br/>
+<Command>rm</Command><Normal Text> /data</Normal Text><Escape>{aa{bb{cc{dd}}}}</Escape><br/>
+<Command>rm</Command><Normal Text> /data</Normal Text><Escape>{aaa</Escape><Backquote>`</Backquote><OtherCommand>aaa</OtherCommand><Normal Text>}</Normal Text><OtherCommand>aa</OtherCommand><Backquote>`</Backquote><Escape>aaa}</Escape><Normal Text>a</Normal Text><br/>
+<Normal Text></Normal Text><br/>
+<Variable>${array[0]: -7 : +  22  }</Variable><Normal Text>  </Normal Text><Variable>${array[1]: num  }</Variable><br/>
+<Variable>${parameter##</Variable><Normal Text>word</Normal Text><Variable>}</Variable><Normal Text> </Normal Text><Variable>${parameter%%</Variable><Normal Text>word</Normal Text><Variable>}</Variable><Normal Text> </Normal Text><Variable>${parameter^^</Variable><Normal Text>pattern</Normal Text><Variable>}</Variable><Normal Text> </Normal Text><Variable>${parameter,,</Variable><Normal Text>pattern</Normal Text><Variable>}</Variable><Normal Text> </Normal Text><Variable>${parameter@</Variable><Normal Text>operator</Normal Text><Variable>}</Variable><br/>
diff --git a/data/syntax/bash.xml b/data/syntax/bash.xml
--- a/data/syntax/bash.xml
+++ b/data/syntax/bash.xml
@@ -8,7 +8,7 @@
         <!ENTITY noword   "(?![\w$+-])">                <!-- no word, $, + or - following -->
         <!ENTITY pathpart "([\w_@.&#37;*?+-]|\\ )">     <!-- valid character in a file name -->
 ]>
-<language name="Bash" version="8" kateversion="5.0" section="Scripts" extensions="*.sh;*.bash;*.ebuild;*.eclass;*.nix;.bashrc;.bash_profile;.bash_login;.profile;PKGBUILD;APKBUILD" mimetype="application/x-shellscript" casesensitive="1" author="Wilbert Berendsen (wilbert@kde.nl)" license="LGPL">
+<language name="Bash" version="9" kateversion="5.0" section="Scripts" extensions="*.sh;*.bash;*.ebuild;*.eclass;*.nix;.bashrc;.bash_profile;.bash_login;.profile;PKGBUILD;APKBUILD" mimetype="application/x-shellscript" casesensitive="1" author="Wilbert Berendsen (wilbert@kde.nl)" license="LGPL">
 
 <!-- (c) 2004 by Wilbert Berendsen (wilbert@kde.nl)
     Changes by Matthew Woehlke (mw_triad@users.sourceforge.net)
@@ -615,14 +615,27 @@
 
       <!-- FindOthers contains various rules to mark different shell input -->
       <context attribute="Normal Text" lineEndContext="#stay" name="FindOthers">
-        <RegExpr attribute="Escape" context="#stay" String="\\[][;\\$`{}()|&amp;&lt;&gt;* ]" />
+        <IncludeRules context="Escapes" />
         <RegExpr attribute="Keyword" context="#stay" String="\\$" />
-        <RegExpr attribute="Escape" context="#stay" String="\{(?!(\s|$))\S*\}" />
+        <!-- Only highlighting closed braces. The "BraceExpansion" context corrects
+             the closure of braces and allows recursive braces (bug #387915). -->
+        <RegExpr attribute="Escape" context="BraceExpansion" String="\{(?=(\\[ \{\}]|[^\s\{\}]|\{(\\[ ]|\S)*\})+\})" />
         <RegExpr attribute="Path" context="#stay" String="&pathpart;*(?=/)" />
         <RegExpr attribute="Path" context="#stay" String="~\w*" />
         <RegExpr attribute="Path" context="#stay" String="/&pathpart;*(?=([\s/):;$`'&quot;]|$))" />
         <!-- TODO: shell globs beside * and ? (in Path's) -->
       </context>
+      <context attribute="Normal Text" lineEndContext="#stay" name="Escapes">
+        <RegExpr attribute="Escape" context="#stay" String="\\[][;\\$`{}()|&amp;&lt;&gt;* ]" />
+      </context>
+      <context attribute="Escape" lineEndContext="#pop" name="BraceExpansion">
+        <DetectSpaces context="#pop" lookAhead="true" />
+        <DetectChar attribute="Escape" context="#pop" char="}" />
+        <DetectChar attribute="Escape" context="BraceExpansion" char="{" />
+        <RegExpr attribute="Error" context="#stay" String="[^\s\{\}\\](?=\s|$)" />
+        <IncludeRules context="Escapes" />
+        <IncludeRules context="FindSubstitutions" />
+      </context>
 
       <!-- FindStrings looks for single and double quoted strings, also with $-prefix -->
       <context attribute="Normal Text" lineEndContext="#stay" name="FindStrings">
@@ -800,7 +813,7 @@
       <context attribute="Error" lineEndContext="#stay" name="VarBrace">
         <DetectChar attribute="Variable" context="#pop" char="}" />
         <DetectChar attribute="Variable" context="Subscript" char="[" />
-        <RegExpr attribute="Variable" context="VarAlt" String="(:?[-=?+]|##?|%%?)" />
+        <RegExpr attribute="Variable" context="VarAlt" String="(:?[-=?+@]|##?|%%?|\^\^?|,,?)" />
         <RegExpr attribute="Variable" context="VarSubst" String="//?" />
         <DetectChar attribute="Variable" context="VarSub" char=":" />
       </context>
@@ -827,16 +840,18 @@
 
       <!-- VarSub is to substrings of variables -->
       <context attribute="Error" lineEndContext="#stay" name="VarSub">
+        <DetectSpaces attribute="Variable" context="#stay" />
         <DetectChar attribute="Variable" context="VarSub2" char=":" />
         <DetectChar attribute="Variable" context="#pop#pop" char="}" />
         <RegExpr attribute="Variable" context="#stay" String="&varname;" />
-        <RegExpr attribute="Variable" context="#stay" String="[0-9]+(?=[:}])" />
+        <RegExpr attribute="Variable" context="#stay" String="([\-\+]\s*)?[0-9]+\s*(?=[:}])" />
         <IncludeRules context="FindSubstitutions" />
       </context>
       <context attribute="Error" lineEndContext="#stay" name="VarSub2">
+        <DetectSpaces attribute="Variable" context="#stay" />
         <DetectChar attribute="Variable" context="#pop#pop#pop" char="}" />
         <RegExpr attribute="Variable" context="#stay" String="&varname;" />
-        <RegExpr attribute="Variable" context="#stay" String="[0-9](?=[:}])" />
+        <RegExpr attribute="Variable" context="#stay" String="([\-\+]\s*)?[0-9]+\s*(?=[:}])" />
         <IncludeRules context="FindSubstitutions" />
       </context>