repl: Make prompt for array and iter more jqish

Really need to refactor script.go some day into a proper parser

internal/script/script.go

@@ -425,7 +425,7 @@ func ParseCases(s string) *Case {
 
 	// TODO: better section splitter, too much heuristics now
 	for _, section := range SectionParser(regexp.MustCompile(
-		`^\$ .*$|^stdin:$|^stderr:$|^exitcode:.*$|^#.*$|^/.*:|^[^<:|]+>.*$`,
+		`^\$ .*$|^stdin:$|^stderr:$|^exitcode:.*$|^#.*$|^/.*:|^[^<|"]+>.*$`,
 	), s) {
 		n, v := section.Name, section.Value
 

pkg/interp/repl.jq

@@ -124,7 +124,7 @@ def _prompt:
           )
         end
       , "]"
-      , if length > 1 then "[\(length)]" else empty end
+      , if length > 1 then "[0:\(length)]" else empty end
       ] | join("")
     else
       ( . as $c
@@ -146,7 +146,7 @@ def _prompt:
     if length == 0 then "empty"
     else
       [ (.[0] | _value)
-      , if length > 1 then ", ...[\(length)]" else empty end
+      , if length > 1 then ", ...[0:\(length)][]" else empty end
       ] | join("")
     end;
   [ _repl_level

pkg/interp/testdata/inputs.fqtest

@@ -82,14 +82,14 @@ exitcode: 4
 stderr:
 error: /a: probe: failed to decode (try -d FORMAT)
 $ fq -i -d raw . /a /b /c
-raw, ...[3]> ._format
+raw, ...[0:3][]> ._format
 "raw"
 "raw"
 "raw"
-raw, ...[3]> ^D
+raw, ...[0:3][]> ^D
 $ fq -i -s -d raw . /a /b /c
-[raw, ...][3]> .[]._format
+[raw, ...][0:3]> .[]._format
 "raw"
 "raw"
 "raw"
-[raw, ...][3]> ^D
+[raw, ...][0:3]> ^D

pkg/interp/testdata/repl.fqtest

@@ -19,26 +19,26 @@ null> 1 | 2 | repl
 3
 > number> ^D
 null> 1,2,3 | repl
-> number, ...[3]> .
+> number, ...[0:3][]> .
 1
 2
 3
-> number, ...[3]> ^D
+> number, ...[0:3][]> ^D
 null> (1 | raw | .unknown0), 1 | repl
-> .unknown0 string, ...[2]> ^D
+> .unknown0 string, ...[0:2][]> ^D
 null> def f: 1; f,f | repl
-> number, ...[2]> .
+> number, ...[0:2][]> .
 1
 1
-> number, ...[2]> ^D
+> number, ...[0:2][]> ^D
 null> [1,2,3] | repl
-> [number, ...][3]> .
+> [number, ...][0:3]> .
 [
   1,
   2,
   3
 ]
-> [number, ...][3]> ^D
+> [number, ...][0:3]> ^D
 null> [1] | repl
 > [number]> .
 [
@@ -52,17 +52,17 @@ $ fq -i 'empty'
 empty> 1
 empty> ^D
 $ fq -i 1,2,3
-number, ...[3]> .*2
+number, ...[0:3][]> .*2
 2
 4
 6
-number, ...[3]> ^D
+number, ...[0:3][]> ^D
 $ fq -i '[1,2,3]'
-[number, ...][3]> repl({compact: true})
-> [number, ...][3]> tovalue
+[number, ...][0:3]> repl({compact: true})
+> [number, ...][0:3]> tovalue
 [1,2,3]
-> [number, ...][3]> ^D
-[number, ...][3]> ^D
+> [number, ...][0:3]> ^D
+[number, ...][0:3]> ^D
 $ fq -i -d mp3 '.headers[0]' /test.mp3
 .headers[0] id3v2> ^D
 $ fq -i -d mp3 . /test.mp3