diff --git a/dict/global.go b/dict/global.go
index f223ae4..c1589d0 100644
--- a/dict/global.go
+++ b/dict/global.go
@@ -19,7 +19,8 @@ var KeepWordsPattern = regexp.MustCompile(`(` +
 	`|` +
 	`\b[a-z-]+--[a-z-]+` + // match helper commands: bisect--helper, ...
 	`|` +
-	`--[a-zA-Z0-9-=]+` + // match git options: --option, --option=value, ...
+	// match git options: --option, --option=param1,param2 ..., --[no-]signed
+	`--(\[[a-z-]+\])?[a-zA-Z0-9-]+(=[a-zA-Z0-9,<\.>*]+)?` +
 	`|` +
 	`%%\(.*?\)` + // match %(fieldname) in format argument of git-for-each-ref, ...
 	`|` +
diff --git a/dict/global_test.go b/dict/global_test.go
new file mode 100644
index 0000000..23b07fa
--- /dev/null
+++ b/dict/global_test.go
@@ -0,0 +1,107 @@
+package dict
+
+import (
+	"sort"
+	"testing"
+)
+
+type keepWordsTest struct {
+	Input   string
+	Matches []string
+}
+
+var keepWordsTests = []keepWordsTest{
+	{
+		Input:   "Cannot $action: You have unstaged changes.",
+		Matches: []string{"$action"},
+	},
+	{
+		Input:   "usage: $dashless $USAGE",
+		Matches: []string{"$USAGE", "$dashless"},
+	},
+	{
+		Input: "fetch normally indicates which branches had a forced update,\n" +
+			"but that check has been disabled; to re-enable, use '--show-forced-updates'\n" +
+			"flag or run 'git config fetch.showForcedUpdates true'",
+		Matches: []string{"--show-forced-updates", "fetch.showForcedUpdates"},
+	},
+	{
+		Input:   "unable to create lazy_name thread: %s",
+		Matches: []string{"lazy_name"},
+	},
+	{
+		Input:   "do not run git-update-server-info",
+		Matches: []string{"git-update-server-info"},
+	},
+	{
+		Input:   "git cat-file (-t | -s) [--allow-unknown-type] <object>",
+		Matches: []string{"--allow-unknown-type", "git cat-file"},
+	},
+	{
+		Input:   "also apply the patch (use with --stat/--summary/--check)",
+		Matches: []string{"--check", "--stat", "--summary"},
+	},
+	{
+		Input:   "--negotiate-only needs one or more --negotiation-tip=*",
+		Matches: []string{"--negotiate-only", "--negotiation-tip=*"},
+	},
+	{
+		Input:   "git maintenance run [--auto] [--[no-]quiet] [--task=<task>] [--schedule]",
+		Matches: []string{"--[no-]quiet", "--auto", "--schedule", "--task=<task>"},
+	},
+	{
+		Input:   "synonym for --dirstat=files,param1,param2...",
+		Matches: []string{"--dirstat=files,param1,param2..."},
+	},
+	{
+		Input:   "synonym for --dirstat=files,<...>,<...>...",
+		Matches: []string{"--dirstat=files,<...>,<...>..."},
+	},
+	{
+		Input:   "expected format: %%(color:<color>)",
+		Matches: []string{"%%(color:<color>)"},
+	},
+	{
+		Input:   "expected format: %%(align:<width>,<position>)",
+		Matches: []string{"%%(align:<width>,<position>)"},
+	},
+	{
+		Input:   "starting with \"refs/\".",
+		Matches: []string{"refs/"},
+	},
+	{
+		Input:   "delete refs/remotes/<name>/HEAD",
+		Matches: []string{"refs/remotes/<name>/HEAD"},
+	},
+	{
+		Input:   "is a ref in \"refs/{heads,tags}/\"",
+		Matches: []string{"refs/{heads,tags}/"},
+	},
+}
+
+func TestKeepWordsPattern(t *testing.T) {
+	for _, tc := range keepWordsTests {
+		m := KeepWordsPattern.FindAllStringSubmatch(tc.Input, -1)
+		matches := []string{}
+		for i := range m {
+			matches = append(matches, m[i][0])
+		}
+		sort.Strings(matches)
+		if len(tc.Matches) != len(matches) {
+			t.Errorf("Failed to match: different length: %d != %d, expect: %v, actual: %v",
+				len(tc.Matches),
+				len(matches),
+				tc.Matches,
+				matches)
+		} else {
+			for i := range tc.Matches {
+				if tc.Matches[i] != matches[i] {
+					t.Errorf("Failed to match. expect: %v, actual: %v",
+						tc.Matches,
+						matches)
+					break
+				}
+			}
+		}
+	}
+}
diff --git a/dict/smudge-vi.go b/dict/smudge-vi.go
index 5796db9..2443799 100644
--- a/dict/smudge-vi.go
+++ b/dict/smudge-vi.go
@@ -14,5 +14,9 @@ func init() {
 			Pattern: "bạn@ví_dụ.com",
 			Replace: "you@example.com",
 		},
+		{
+			Pattern: "…",
+			Replace: "...",
+		},
 	}
 }
diff --git a/test/t0031-check-typos-in-po.sh b/test/t0031-check-typos-in-po.sh
index b02d0b9..3da6173 100755
--- a/test/t0031-check-typos-in-po.sh
+++ b/test/t0031-check-typos-in-po.sh
@@ -224,7 +224,7 @@ test_expect_success "check typos of mismatched options" '
 	level=warning msg="[po/zh_CN.po]    >> msgid: --reject and --3way cannot be used together."
 	level=warning msg="[po/zh_CN.po]    >> msgstr: --reject 和 -3way 不能同时使用。"
 	level=warning msg="[po/zh_CN.po]"
-	level=warning msg="[po/zh_CN.po]    mismatched patterns: --word-diff-regex="
+	level=warning msg="[po/zh_CN.po]    mismatched patterns: --word-diff-regex, --word-diff-regex=<...>"
 	level=warning msg="[po/zh_CN.po]    >> msgid: equivalent to --word-diff=color --word-diff-regex=<regex>"
 	level=warning msg="[po/zh_CN.po]    >> msgstr: 相当于 --word-diff=color --word-diff-regex=正则"
 	level=warning msg="[po/zh_CN.po]"
diff --git a/test/t0036-typos-in-sv.sh b/test/t0036-typos-in-sv.sh
index a5fbcfd..0d07981 100755
--- a/test/t0036-typos-in-sv.sh
+++ b/test/t0036-typos-in-sv.sh
@@ -96,7 +96,7 @@ level=warning msg="[po/sv.po]    mismatched patterns: --branch, --brand"
 level=warning msg="[po/sv.po]    >> msgid: git submodule--helper set-branch [-q|--quiet] (-b|--branch) <branch> <path>"
 level=warning msg="[po/sv.po]    >> msgstr: git submodule--helper set-branch [-q|--quiet] (-b|--brand) <gren> <sökväg>"
 level=warning msg="[po/sv.po]"
-level=warning msg="[po/sv.po]    mismatched patterns: --format="
+level=warning msg="[po/sv.po]    mismatched patterns: --format=<...>..."
 level=warning msg="[po/sv.po]    >> msgid: git verify-tag [-v | --verbose] [--format=<format>] <tag>..."
 level=warning msg="[po/sv.po]    >> msgstr: git verify-tag [-v | --verbose] [--format=<format] <tagg>..."
 level=warning msg="[po/sv.po]"