melib: link threads with empty intermediates
A thread's chain link would get broken when empty intermediate ThreadNodes exist. The pruning of the empty node did not properly chain the empty node's parent with the empty node's children. Old behaviour: - [A] /* [B] is missing */ - [C] /* [D] is missing */ - [E] New behaviour (`x` represents deleted links) - [A] | |xxx> [empty node of B] | x | x | \/ |_______>[C] | |xxx> [empty node of D] | x | x | \/ |_______>[E]embed
parent
0e3b8f54d9
commit
355fb63b16
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@ -499,17 +499,17 @@ impl Threads {
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return true;
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}
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if !thread_nodes[idx].has_message() {
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if !thread_nodes[idx].has_message() && !thread_nodes[idx].has_parent() {
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if thread_nodes[idx].children.len() == 1 {
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/* "Do not promote the children if doing so would promote them to the root set
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* -- unless there is only one child, in which case, do." */
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let child = thread_nodes[idx].children[0];
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root_set.push(child);
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thread_nodes[idx].children.clear();
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remove_from_parent!(thread_nodes, idx);
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remove_from_parent!(thread_nodes, child);
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return true; // Pruned
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} else if let Some(p) = thread_nodes[idx].parent {
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}
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} else if let Some(p) = thread_nodes[idx].parent {
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if !thread_nodes[idx].has_message() {
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let orphans = thread_nodes[idx].children.clone();
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for c in orphans {
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make!((p) parent of (c), thread_nodes);
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@ -574,25 +574,38 @@ impl Threads {
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t.create_root_set(collection);
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t.build_collection(collection);
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// for (i, _t) in t.thread_nodes.iter().enumerate() {
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// debug!("Thread #{}, children {}", i, _t.children.len());
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// if !_t.children.is_empty() {
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// debug!("{:?}", _t.children);
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// }
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// if let Some(m) = _t.message {
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// debug!("\tmessage: {}", collection[&m].subject());
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// } else {
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// debug!("\tNo message");
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// }
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// }
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// for (i, _t) in t.tree.borrow().iter().enumerate() {
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// debug!("Tree #{} id {}, children {}", i, _t.id, _t.children.len());
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// if let Some(m) = t.thread_nodes[_t.id].message {
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// debug!("\tmessage: {}", collection[&m].subject());
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// } else {
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// debug!("\tNo message");
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// }
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// }
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//for (i, _t) in t.thread_nodes.iter().enumerate() {
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// if !_t.has_parent() && _t.children.is_empty() && !_t.has_message() {
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// continue;
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// }
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// debug!("--------------------------");
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// if let Some(m) = _t.message {
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// debug!(
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// "\tmessage: {}\t{}",
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// collection[&m].subject(),
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// collection[&m].message_id()
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// );
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// } else {
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// debug!("\tNo message");
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// }
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// debug!(
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// "Thread #{}, children {}:\n\t{:#?}",
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// i,
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// _t.children.len(),
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// _t
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// );
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// if !_t.children.is_empty() {
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// debug!("{:?}", _t.children);
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// }
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//}
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//for (i, _t) in t.tree.borrow().iter().enumerate() {
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// debug!("Tree #{} id {}, children {}", i, _t.id, _t.children.len());
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// if let Some(m) = t.thread_nodes[_t.id].message {
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// debug!("\tmessage: {}", collection[&m].subject());
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// } else {
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// debug!("\tNo message");
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// }
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//}
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t
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}
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@ -1215,9 +1228,6 @@ impl Threads {
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/* The index of the reference we are currently examining, start from current message */
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let mut ref_ptr = t_idx;
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if self.thread_nodes[t_idx].has_parent() {
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remove_from_parent!(&mut self.thread_nodes, t_idx);
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}
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for &refn in envelope.references().iter().rev() {
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let r_id = refn.raw();
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@ -1234,7 +1244,9 @@ impl Threads {
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new_id
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};
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/* If they are already linked, don't change the existing links. */
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if self.thread_nodes[ref_ptr].has_parent() {
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if self.thread_nodes[ref_ptr].has_parent()
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&& self.thread_nodes[ref_ptr].parent.unwrap() != parent_id
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{
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ref_ptr = parent_id;
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continue;
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}
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@ -1248,6 +1260,7 @@ impl Threads {
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self.union(ref_ptr, parent_id);
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make!((parent_id) parent of (ref_ptr), &mut self.thread_nodes);
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}
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ref_ptr = parent_id;
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}
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}
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