add some more search capabilities

database.go

@@ -303,6 +303,26 @@ func gethonksbysearch(userid int64, q string, wanted int64) []*Honk {
 		if t == "" {
 			continue
 		}
+		if t == "@me" {
+			queries = append(queries, "whofore = 1")
+			continue
+		}
+		if t == "@self" {
+			queries = append(queries, "(whofore = 2 or whofore = 3)")
+			continue
+		}
+		if strings.HasPrefix(t, "before:") {
+			before := t[7:]
+			queries = append(queries, "dt < ?")
+			params = append(params, before)
+			continue
+		}
+		if strings.HasPrefix(t, "after:") {
+			after := t[6:]
+			queries = append(queries, "dt > ?")
+			params = append(params, after)
+			continue
+		}
 		if strings.HasPrefix(t, "site:") {
 			site := t[5:]
 			site = "%" + site + "%"

docs/changelog.txt

@@ -2,6 +2,8 @@ changelog
 
 === next
 
++ Improved search.
+
 + Tuned up superdeliverator.
 
 + Import from instagram.

docs/honk.1

@@ -143,10 +143,18 @@ section of the manual for details of honk composition.
 Find old honks.
 It's basic substring match with a few extensions.
 The following keywords are supported:
-.Bl -tag -width honker
-.It site
+.Bl -tag -width honker:
+.It @me
+Honks mentioning the user.
+.It @self
+Honks by the user.
+.It before:
+Honks posted before YYYY-MM-DD.
+.It after:
+As above.
+.It site:
 Substring match on the post domain name.
-.It honker
+.It honker:
 Exact match, either AP actor or honker nickname.
 .It -
 Negate term.