Replace --normalize with --literal and enable normalization by default

Ref #790

CHANGELOG.md

@@ -6,8 +6,9 @@ CHANGELOG
 - Added `--height HEIGHT[%]` option
 - Preview window will truncate long lines by default. Line wrap can be enabled
   by `:wrap` flag in `--preview-window`.
-- Added `--normalize` option to normalize latin script letters before
+- Latin script letters will be normalized before matching so that it's easier
-  matching. e.g. `sodanco` can match `Só Danço Samba`.
+  to match against accented letters. e.g. `sodanco` can match `Só Danço Samba`.
+    - Normalization can be disabled via `--literal`
 
 0.15.9
 ------

man/man1/fzf.1

@@ -48,9 +48,8 @@ Case-insensitive match (default: smart-case match)
 .B "+i"
 Case-sensitive match
 .TP
-.B "--normalize"
+.B "--literal"
-Normalize latin script letters before matching. This is not enabled by default
+Do not normalize latin script letters for matching.
-to avoid performance overhead.
 .TP
 .BI "--algo=" TYPE
 Fuzzy matching algorithm (default: v2)

shell/completion.bash

@@ -67,6 +67,7 @@ _fzf_opts_completion() {
     --no-hscroll
     --jump-labels
     --height
+    --literal
     --reverse
     --margin
     --inline-info

src/options.go

@@ -24,7 +24,7 @@ const usage = `usage: fzf [options]
     --algo=TYPE           Fuzzy matching algorithm: [v1|v2] (default: v2)
     -i                    Case-insensitive match (default: smart-case match)
     +i                    Case-sensitive match
-    --normalize           Normalize latin script letters before matching
+    --literal             Do not normalize latin script letters before matching
     -n, --nth=N[,..]      Comma-separated list of field index expressions
                           for limiting search scope. Each can be a non-zero
                           integer or a range expression ([BEGIN]..[END]).
@@ -190,7 +190,7 @@ func defaultOptions() *Options {
 		FuzzyAlgo:   algo.FuzzyMatchV2,
 		Extended:    true,
 		Case:        CaseSmart,
-		Normalize:   false,
+		Normalize:   true,
 		Nth:         make([]Range, 0),
 		WithNth:     make([]Range, 0),
 		Delimiter:   Delimiter{},
@@ -901,10 +901,10 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "-f", "--filter":
 			filter := nextString(allArgs, &i, "query string required")
 			opts.Filter = &filter
-		case "--normalize":
+		case "--literal":
-			opts.Normalize = true
-		case "--no-normalize":
 			opts.Normalize = false
+		case "--no-literal":
+			opts.Normalize = true
 		case "--algo":
 			opts.FuzzyAlgo = parseAlgo(nextString(allArgs, &i, "algorithm required (v1|v2)"))
 		case "--expect":