Fixes: group biblatex citations even with prefix and suffix (#6058)

Closes #5849.  Previously biblatex citations were only grouped if
there was no prefix.  This patch allows them to be grouped in
subgroups split by prefixes and suffixes, which allows better citation
sorting.

1 files changed, 32 insertions, 0 deletions

diff --git a/test/command/5849-prefix.md b/test/command/5849-prefix.md
new file mode 100644
index 000000000..61af8f03a
--- /dev/null
+++ b/test/command/5849-prefix.md
@@ -0,0 +1,32 @@
+```
+% pandoc -t latex --biblatex
+[e.g. @a1;@a2;@a3; but also @b1;@b2;@b3]
+^D
+\autocites[e.g.~][]{a1,a2,a3}[but also][]{b1,b2,b3}
+```
+```
+% pandoc -t latex --biblatex
+[e.g. @a1; e.g. @a2;@a3; but also @b1;@b2;but also @b3]
+^D
+\autocites[e.g.~][]{a1}[e.g.~][]{a2,a3}[but also][]{b1,b2}[but
+also][]{b3}
+```
+```
+% pandoc -t latex --biblatex
+[e.g. @a1, ch.3 and elsewhere;@a2;@a3; but also @a4;@a5]
+^D
+\autocites[e.g.~][ch.3 and elsewhere]{a1}{a2,a3}[but also][]{a4,a5}
+```
+```
+% pandoc -t latex --biblatex
+[e.g. @a1;@a2, ch.3 and elsewhere;@a3; but also @a4;@a5]
+^D
+\autocites[e.g.~][ch.3 and elsewhere]{a1,a2}{a3}[but also][]{a4,a5}
+```
+```
+% pandoc -t latex --biblatex
+[e.g. @a1, blah;@a2, ch.3 and elsewhere;@a3; but also @b4;@b5]
+^D
+\autocites[e.g.~][blah]{a1}[ch.3 and elsewhere]{a2}{a3}[but
+also][]{b4,b5}
+```