removeDiacritics => remove_diacritics

https://www.sqlite.org/fts3.html#tokenizer

Closes stephencelis#1128

Author: jberkel

Sources/SQLite/Extensions/FTS4.swift

@@ -103,7 +103,7 @@ public struct Tokenizer {
         var arguments = [String]()
 
         if let removeDiacritics = removeDiacritics {
-            arguments.append("removeDiacritics=\(removeDiacritics ? 1 : 0)".quote())
+            arguments.append("remove_diacritics=\(removeDiacritics ? 1 : 0)".quote())
         }
 
         if !tokenchars.isEmpty {

Tests/SQLiteTests/FTS4Tests.swift

@@ -21,12 +21,12 @@ class FTS4Tests: XCTestCase {
             virtualTable.create(.FTS4([string], tokenize: .Porter))
         )
         XCTAssertEqual(
-            "CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"removeDiacritics=0\")",
+            "CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"remove_diacritics=0\")",
             virtualTable.create(.FTS4(tokenize: .Unicode61(removeDiacritics: false)))
         )
         XCTAssertEqual(
             """
-            CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"removeDiacritics=1\"
+            CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"remove_diacritics=1\"
              \"tokenchars=.\" \"separators=X\")
             """.replacingOccurrences(of: "\n", with: ""),
             virtualTable.create(.FTS4(tokenize: .Unicode61(removeDiacritics: true,
@@ -116,7 +116,7 @@ class FTS4ConfigTests: XCTestCase {
     func test_tokenizer_unicode61_with_options() {
         XCTAssertEqual(
             """
-            CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"removeDiacritics=1\"
+            CREATE VIRTUAL TABLE \"virtual_table\" USING fts4(tokenize=unicode61 \"remove_diacritics=1\"
              \"tokenchars=.\" \"separators=X\")
             """.replacingOccurrences(of: "\n", with: ""),
             sql(config.tokenizer(.Unicode61(removeDiacritics: true, tokenchars: ["."], separators: ["X"]))))

Tests/SQLiteTests/FTS5Tests.swift

@@ -77,7 +77,7 @@ class FTS5Tests: XCTestCase {
 
     func test_tokenizer_unicode61_with_options() {
         XCTAssertEqual(
-            "CREATE VIRTUAL TABLE \"virtual_table\" USING fts5(tokenize=unicode61 \"removeDiacritics=1\" \"tokenchars=.\" \"separators=X\")",
+            "CREATE VIRTUAL TABLE \"virtual_table\" USING fts5(tokenize=unicode61 \"remove_diacritics=1\" \"tokenchars=.\" \"separators=X\")",
             sql(config.tokenizer(.Unicode61(removeDiacritics: true, tokenchars: ["."], separators: ["X"]))))
     }