Fixed empty array op

pkg/yqlib/doc/Assign.md

@@ -100,7 +100,7 @@ a:
 ```
 then
 ```bash
-yq eval '.a[] | select(. == "apple") |= "frog"' sample.yml
+yq eval '.a.[] | select(. == "apple") |= "frog"' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Collect into Array.md

@@ -10,6 +10,7 @@ yq eval --null-input '[]'
 ```
 will output
 ```yaml
+[]
 ```
 
 ## Collect single

pkg/yqlib/doc/Collect into Object.md

@@ -34,7 +34,7 @@ pets:
 ```
 then
 ```bash
-yq eval '{.name: .pets[]}' sample.yml
+yq eval '{.name: .pets.[]}' sample.yml
 ```
 will output
 ```yaml
@@ -57,7 +57,7 @@ pets:
 ```
 then
 ```bash
-yq eval '{.name: .pets[]}' sample.yml
+yq eval '{.name: .pets.[]}' sample.yml
 ```
 will output
 ```yaml

pkg/yqlib/doc/Document Index Operator.md

@@ -1,53 +0,0 @@
-## Retrieve a document index
-Given a sample.yml file of:
-```yaml
-a: cat
----
-a: frog
-```
-then
-```bash
-yq eval '.a | documentIndex' sample.yml
-```
-will output
-```yaml
-0
----
-1
-```
-
-## Filter by document index
-Given a sample.yml file of:
-```yaml
-a: cat
----
-a: frog
-```
-then
-```bash
-yq eval 'select(. | documentIndex == 1)' sample.yml
-```
-will output
-```yaml
-a: frog
-```
-
-## Print Document Index with matches
-Given a sample.yml file of:
-```yaml
-a: cat
----
-a: frog
-```
-then
-```bash
-yq eval '.a | ({"match": ., "doc": (. | documentIndex)})' sample.yml
-```
-will output
-```yaml
-match: cat
-doc: 0
-match: frog
-doc: 1
-```
-

pkg/yqlib/doc/Select.md

@@ -26,7 +26,7 @@ a:
 ```
 then
 ```bash
-yq eval '(.a[] | select(. == "*at")) |= "rabbit"' sample.yml
+yq eval '(.a.[] | select(. == "*at")) |= "rabbit"' sample.yml
 ```
 will output
 ```yaml