FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

FASTMAIL: QueryParser: do not try to parse unbroken words as group terms

This is submitted upstream at xapian#331

--- Original commit message:
Fixes a bug where QueryParser fails with an error when parsing
the sequence of: term, whitespace, unbroken words, term. The
underlying issue is that unbroken words can not be part of a
group according to the lemon grammar.

As the combination of unbroken words and terms is highly unlikely
to ever form a multi-term synonym, this patch changes the query
parser to leave group term mode after having parsed unbroken words.

[perl] Fix POD conversion when builddir!=srcdir

honey_compact: don't crash on empty tables

If the table is empty, calling ->next will crash.  Checking ->empty
on the cursor instead avoids going down that codepath

Avoids a crasher in compacting when adding a Glass database
with nothing but metadata in it:

https://lists.xapian.org/pipermail/xapian-devel/2020-September/003384.html

honey_compact: don't crash on empty tables

If the table is empty, calling ->next will crash.  Checking ->empty
on the cursor instead avoids going down that codepath

Avoids a crasher in compacting when adding a Glass database
with nothing but metadata in it:

https://lists.xapian.org/pipermail/xapian-devel/2020-September/003384.html