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thread-subject: ignore '<prefix>:' when comparing

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Should catch most cases.

Fixes: #2083.
This commit is contained in:
Dirk-Jan C. Binnema
2021-08-11 15:16:54 +03:00
parent b7844358d2
commit 9a31225ef4
1 changed files with 20 additions and 18 deletions
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38
lib/mu-query-threads.cc
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@ -366,6 +366,20 @@ to_string (const ThreadPath& tpath, size_t digits)
return str;
}
static bool // compare subjects, ignore anything before ':'
subject_matches (const std::string& sub1, const std::string& sub2)
{
auto search_str =[](const std::string&s) -> const char* {
const auto pos = s.find_first_of(':');
if (pos == std::string::npos)
return s.c_str();
else
return s.c_str() + pos + 1;
};
//g_debug ("'%s' '%s'", search_str(sub1), search_str(sub2));
return g_strcmp0(search_str(sub1), search_str(sub2)) == 0;
}
static bool
update_container (Container& container, bool descending,
@ -385,7 +399,6 @@ update_container (Container& container, bool descending,
return false; // nothing else to do.
auto& qmatch(*container.query_match);
if (!container.parent)
qmatch.flags |= QueryMatch::Flags::Root;
else if (!container.parent->query_match)
@ -394,20 +407,10 @@ update_container (Container& container, bool descending,
if (!container.children.empty())
qmatch.flags |= QueryMatch::Flags::HasChild;
// see whether this message has the thread subject, i.e., the
// first message in this thread with the given subject.
if (qmatch.has_flag(QueryMatch::Flags::Root) ||
//qmatch.has_flag(QueryMatch::Flags::Orphan) ||
prev_subject.empty() ||
(qmatch.subject.find(prev_subject) > 5))
if (qmatch.has_flag(QueryMatch::Flags::Root) || prev_subject.empty() ||
!subject_matches(prev_subject, qmatch.subject))
qmatch.flags |= QueryMatch::Flags::ThreadSubject;
// g_debug ("%c%c: '%s' vs '%s'",
// any_of(qmatch.flags & QueryMatch::Flags::Root) ? 'r' : 'c',
// any_of(qmatch.flags & QueryMatch::Flags::ThreadSubject) ? 'y' : 'n',
// qmatch.subject.c_str(),
// prev_subject.c_str());
if (descending && container.parent) {
// trick xapian by giving it "inverse" sorting key so our
// ascending-date sorted threads stay in that order
@ -427,20 +430,19 @@ update_container (Container& container, bool descending,
static void
update_containers (Containers& children, bool descending, ThreadPath& tpath,
size_t seg_size, const std::string& prev_subject)
size_t seg_size, std::string& prev_subject)
{
size_t idx{0};
std::string last_subject = prev_subject;
for (auto&& c: children) {
tpath.emplace_back(idx++);
if (c->query_match) {
update_container(*c, descending, tpath, seg_size,
last_subject);
last_subject = c->query_match->subject;
prev_subject);
prev_subject = c->query_match->subject;
}
update_containers(c->children, descending, tpath, seg_size,
last_subject);
prev_subject);
tpath.pop_back();
}
}