update #4455, regenerate commands' docs and update make_docs script (#4586)

* feat: update #4455, regenerate commands' docs

* chore: update make_docs script

docs/commands/alias.md

@@ -21,4 +21,3 @@ Alias ll to ls -l
 ```shell
 > alias ll = ls -l
 ```
-

docs/commands/all.md

@@ -25,4 +25,3 @@ Check that all values are even
 ```shell
 > echo [2 4 6 8] | all? ($it mod 2) == 0
 ```
-

docs/commands/ansi.md

@@ -43,4 +43,3 @@ Use ansi to color text with a style (blue on red in bold)
 ```shell
 > $"(ansi -e { fg: '#0000ff' bg: '#ff0000' attr: b })Hello Nu World(ansi reset)"
 ```
-

docs/commands/ansi_gradient.md

@@ -39,4 +39,3 @@ draw text in a gradient by specifying foreground end color - start color is assu
 ```shell
 > echo 'Hello, Nushell! This is a gradient.' | ansi gradient --fgend 0xe81cff
 ```
-

docs/commands/ansi_strip.md

@@ -20,4 +20,3 @@ strip ansi escape sequences from string
 ```shell
 > echo [ (ansi green) (ansi cursor_on) "hello" ] | str collect | ansi strip
 ```
-

docs/commands/any.md

@@ -25,4 +25,3 @@ Check if any of the values is odd
 ```shell
 > echo [2 4 1 6 8] | any? ($it mod 2) == 1
 ```
-

docs/commands/append.md

@@ -30,4 +30,3 @@ Append Ints and Strings
 ```shell
 > [0,1] | append [2,nu,4,shell]
 ```
-

docs/commands/benchmark.md

@@ -20,4 +20,3 @@ Benchmarks a command within a block
 ```shell
 > benchmark { sleep 500ms }
 ```
-

docs/commands/build-string.md

@@ -25,4 +25,3 @@ Builds a string from letters a b c
 ```shell
 > build-string (1 + 2) = one ' ' plus ' ' two
 ```
-

docs/commands/cal.md

@@ -35,4 +35,3 @@ This month's calendar with the week starting on monday
 ```shell
 > cal --week-start monday
 ```
-

docs/commands/cd.md

@@ -20,4 +20,3 @@ Change to your home directory
 ```shell
 > cd ~
 ```
-

docs/commands/char.md

@@ -38,4 +38,3 @@ Output multi-byte Unicode character
 ```shell
 > char -u 1F468 200D 1F466 200D 1F466
 ```
-

docs/commands/clear.md

@@ -16,4 +16,3 @@ Clear the terminal
 ```shell
 > clear
 ```
-

docs/commands/collect.md

@@ -20,4 +20,3 @@ Use the second value in the stream
 ```shell
 > echo 1 2 3 | collect { |x| echo $x.1 }
 ```
-

docs/commands/columns.md

@@ -26,4 +26,3 @@ Get the second column from the table
 ```shell
 > [[name,age,grade]; [bill,20,a]] | columns | select 1
 ```
-

docs/commands/compact.md

@@ -30,4 +30,3 @@ Filter out all instances of nothing from a list (Returns [1,2]
 ```shell
 > echo [1, $nothing, 2] | compact
 ```
-

docs/commands/cp.md

@@ -27,4 +27,3 @@ Recursively copy dir_a to dir_b
 ```shell
 > cp -r dir_a dir_b
 ```
-

docs/commands/dataframe.md

@@ -9,4 +9,3 @@ Deprecated command
 ## Signature
 
 ```> dataframe ```
-

docs/commands/date.md

@@ -9,4 +9,3 @@ date
 ## Signature
 
 ```> date ```
-

docs/commands/date_format.md

@@ -36,4 +36,3 @@ Format a given date using a given format string.
 ```shell
 > "2021-10-22 20:00:12 +01:00" | date format "%Y-%m-%d"
 ```
-

docs/commands/date_humanize.md

@@ -21,4 +21,3 @@ Print a 'humanized' format for the date, relative to now.
 ```shell
 > "2021-10-22 20:00:12 +01:00" | date humanize
 ```
-

docs/commands/date_list-timezone.md

@@ -16,4 +16,3 @@ Show timezone(s) that contains 'Shanghai'
 ```shell
 > date list-timezone | where timezone =~ Shanghai
 ```
-

docs/commands/date_now.md

@@ -16,4 +16,3 @@ Get the current date and display it in a given format string.
 ```shell
 > date now | date format "%Y-%m-%d %H:%M:%S"
 ```
-

docs/commands/date_to-table.md

@@ -26,4 +26,3 @@ Print the date in a structured table.
 ```shell
 >  '2020-04-12 22:10:57 +0200' | date to-table
 ```
-

docs/commands/date_to-timezone.md

@@ -35,4 +35,3 @@ Get the current date in Hawaii
 ```shell
 > "2020-10-10 10:00:00 +02:00" | date to-timezone "+0500"
 ```
-

docs/commands/debug.md

@@ -20,4 +20,3 @@ Describe the type of a string
 ```shell
 > 'hello' | debug
 ```
-

docs/commands/decode.md

@@ -20,4 +20,3 @@ Decode the output of an external command
 ```shell
 > cat myfile.q | decode utf-8
 ```
-

docs/commands/def-env.md

@@ -16,3 +16,9 @@ Define a custom command, which participates in the caller environment
  -  `params`: parameters
  -  `block`: body of the definition
 
+## Examples
+
+Set environment variable by call a custom command
+```shell
+> def-env foo [] { let-env BAR = "BAZ" }; foo; $env.BAR
+```

docs/commands/def.md

@@ -27,4 +27,3 @@ Define a command and run it with parameter(s)
 ```shell
 > def say-sth [sth: string] { echo $sth }; say-sth hi
 ```
-

docs/commands/default.md

@@ -21,4 +21,3 @@ Give a default 'target' to all file entries
 ```shell
 > ls -la | default target 'nothing'
 ```
-

docs/commands/describe.md

@@ -16,4 +16,3 @@ Describe the type of a string
 ```shell
 > 'hello' | describe
 ```
-

docs/commands/detect_columns.md

@@ -26,4 +26,3 @@ Splits a multi-line string into columns with headers detected
 ```shell
 > echo $'c1 c2 c3(char nl)a b c' | detect columns
 ```
-

docs/commands/dfr.md

@@ -9,4 +9,3 @@ Dataframe commands
 ## Signature
 
 ```> dfr ```
-

docs/commands/dfr_aggregate.md

@@ -12,7 +12,7 @@ Performs an aggregation operation on a dataframe and groupby object
 
 ## Parameters
 
- -  `operation_name`:
+ -  `operation_name`: 
 	Dataframes: mean, sum, min, max, quantile, median, var, std
 	GroupBy: mean, sum, min, max, first, last, nunique, quantile, median, var, std, count
  -  `--quantile {number}`: quantile value for quantile operation
@@ -34,4 +34,3 @@ Aggregate sum in series
 ```shell
 > [4 1 5 6] | dfr to-df | dfr aggregate sum
 ```
-

docs/commands/dfr_all-false.md

@@ -23,4 +23,3 @@ Checks the result from a comparison
     let res = ($s > 9);
     $res | dfr all-false
 ```
-

docs/commands/dfr_all-true.md

@@ -23,4 +23,3 @@ Checks the result from a comparison
     let res = ($s > 9);
     $res | dfr all-true
 ```
-

docs/commands/dfr_append.md

@@ -28,4 +28,3 @@ Appends a dataframe merging at the end of columns
 > let a = ([[a b]; [1 2] [3 4]] | dfr to-df);
     $a | dfr append $a --col
 ```
-

docs/commands/dfr_arg-max.md

@@ -16,4 +16,3 @@ Returns index for max value
 ```shell
 > [1 3 2] | dfr to-df | dfr arg-max
 ```
-

docs/commands/dfr_arg-min.md

@@ -16,4 +16,3 @@ Returns index for min value
 ```shell
 > [1 3 2] | dfr to-df | dfr arg-min
 ```
-

docs/commands/dfr_arg-sort.md

@@ -25,4 +25,3 @@ Returns indexes for a sorted series
 ```shell
 > [1 2 2 3 3] | dfr to-df | dfr arg-sort -r
 ```
-

docs/commands/dfr_arg-true.md

@@ -16,4 +16,3 @@ Returns indexes where values are true
 ```shell
 > [$false $true $false] | dfr to-df | dfr arg-true
 ```
-

docs/commands/dfr_arg-unique.md

@@ -16,4 +16,3 @@ Returns indexes for unique values
 ```shell
 > [1 2 2 3 3] | dfr to-df | dfr arg-unique
 ```
-

docs/commands/dfr_column.md

@@ -20,4 +20,3 @@ Returns the selected column as series
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr column a
 ```
-

docs/commands/dfr_concatenate.md

@@ -21,4 +21,3 @@ Concatenate string
 > let other = ([za xs cd] | dfr to-df);
     [abc abc abc] | dfr to-df | dfr concatenate $other
 ```
-

docs/commands/dfr_contains.md

@@ -20,4 +20,3 @@ Returns boolean indicating if pattern was found
 ```shell
 > [abc acb acb] | dfr to-df | dfr contains ab
 ```
-

docs/commands/dfr_count-null.md

@@ -17,4 +17,3 @@ Counts null values
 > let s = ([1 1 0 0 3 3 4] | dfr to-df);
     ($s / $s) | dfr count-null
 ```
-

docs/commands/dfr_count-unique.md

@@ -16,4 +16,3 @@ Counts unique values
 ```shell
 > [1 1 2 2 3 3 4] | dfr to-df | dfr count-unique
 ```
-

docs/commands/dfr_cumulative.md

@@ -21,4 +21,3 @@ Cumulative sum for a series
 ```shell
 > [1 2 3 4 5] | dfr to-df | dfr cumulative sum
 ```
-

docs/commands/dfr_describe.md

@@ -16,4 +16,3 @@ dataframe description
 ```shell
 > [[a b]; [1 1] [1 1]] | dfr to-df | dfr describe
 ```
-

docs/commands/dfr_drop-duplicates.md

@@ -21,4 +21,3 @@ drop duplicates
 ```shell
 > [[a b]; [1 2] [3 4] [1 2]] | dfr to-df | dfr drop-duplicates
 ```
-

docs/commands/dfr_drop-nulls.md

@@ -29,4 +29,3 @@ drop null values in dataframe
 > let s = ([1 2 0 0 3 4] | dfr to-df);
     ($s / $s) | dfr drop-nulls
 ```
-

docs/commands/dfr_drop.md

@@ -20,4 +20,3 @@ drop column a
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr drop a
 ```
-

docs/commands/dfr_dtypes.md

@@ -16,4 +16,3 @@ Dataframe dtypes
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr dtypes
 ```
-

docs/commands/dfr_filter-with.md

@@ -21,4 +21,3 @@ Filter dataframe using a bool mask
 > let mask = ([$true $false] | dfr to-df);
     [[a b]; [1 2] [3 4]] | dfr to-df | dfr filter-with $mask
 ```
-

docs/commands/dfr_first.md

@@ -20,4 +20,3 @@ Create new dataframe with head rows
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr first 1
 ```
-

docs/commands/dfr_get-day.md

@@ -18,4 +18,3 @@ Returns day from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-day
 ```
-

docs/commands/dfr_get-hour.md

@@ -18,4 +18,3 @@ Returns hour from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-hour
 ```
-

docs/commands/dfr_get-minute.md

@@ -18,4 +18,3 @@ Returns minute from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-minute
 ```
-

docs/commands/dfr_get-month.md

@@ -18,4 +18,3 @@ Returns month from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-month
 ```
-

docs/commands/dfr_get-nanosecond.md

@@ -18,4 +18,3 @@ Returns nanosecond from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-nanosecond
 ```
-

docs/commands/dfr_get-ordinal.md

@@ -18,4 +18,3 @@ Returns ordinal from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-ordinal
 ```
-

docs/commands/dfr_get-second.md

@@ -18,4 +18,3 @@ Returns second from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-second
 ```
-

docs/commands/dfr_get-week.md

@@ -18,4 +18,3 @@ Returns week from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-week
 ```
-

docs/commands/dfr_get-weekday.md

@@ -18,4 +18,3 @@ Returns weekday from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-weekday
 ```
-

docs/commands/dfr_get-year.md

@@ -18,4 +18,3 @@ Returns year from a date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr get-year
 ```
-

docs/commands/dfr_get.md

@@ -20,4 +20,3 @@ Creates dataframe with selected columns
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr get a
 ```
-

docs/commands/dfr_group-by.md

@@ -20,4 +20,3 @@ Grouping by column a
 ```shell
 > [[a b]; [one 1] [one 2]] | dfr to-df | dfr group-by a
 ```
-

docs/commands/dfr_is-duplicated.md

@@ -16,4 +16,3 @@ Create mask indicating duplicated values
 ```shell
 > [5 6 6 6 8 8 8] | dfr to-df | dfr is-duplicated
 ```
-

docs/commands/dfr_is-in.md

@@ -21,4 +21,3 @@ Checks if elements from a series are contained in right series
 > let other = ([1 3 6] | dfr to-df);
     [5 6 6 6 8 8 8] | dfr to-df | dfr is-in $other
 ```
-

docs/commands/dfr_is-not-null.md

@@ -18,4 +18,3 @@ Create mask where values are not null
     let res = ($s / $s);
     $res | dfr is-not-null
 ```
-

docs/commands/dfr_is-null.md

@@ -18,4 +18,3 @@ Create mask where values are null
     let res = ($s / $s);
     $res | dfr is-null
 ```
-

docs/commands/dfr_is-unique.md

@@ -16,4 +16,3 @@ Create mask indicating unique values
 ```shell
 > [5 6 6 6 8 8 8] | dfr to-df | dfr is-unique
 ```
-

docs/commands/dfr_join.md

@@ -25,4 +25,3 @@ inner join dataframe
 > let right = ([[a b c]; [1 2 5] [3 4 5] [5 6 6]] | dfr to-df);
     $right | dfr join $right -l [a b] -r [a b]
 ```
-

docs/commands/dfr_last.md

@@ -20,4 +20,3 @@ Create new dataframe with last rows
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr last 1
 ```
-

docs/commands/dfr_melt.md

@@ -23,4 +23,3 @@ melt dataframe
 ```shell
 > [[a b c d]; [x 1 4 a] [y 2 5 b] [z 3 6 c]] | dfr to-df | dfr melt -c [b c] -v [a d]
 ```
-

docs/commands/dfr_not.md

@@ -16,4 +16,3 @@ Inverts boolean mask
 ```shell
 > [$true $false $true] | dfr to-df | dfr not
 ```
-

docs/commands/dfr_open.md

@@ -25,4 +25,3 @@ Takes a file name and creates a dataframe
 ```shell
 > dfr open test.csv
 ```
-

docs/commands/dfr_pivot.md

@@ -22,4 +22,3 @@ Pivot a dataframe on b and aggregation on col c
 ```shell
 > [[a b c]; [one x 1] [two y 2]] | dfr to-df | dfr group-by a | dfr pivot b c sum
 ```
-

docs/commands/dfr_rename-col.md

@@ -21,4 +21,3 @@ Renames a dataframe column
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr rename-col a a_new
 ```
-

docs/commands/dfr_rename.md

@@ -20,4 +20,3 @@ Renames a series
 ```shell
 > [5 6 7 8] | dfr to-df | dfr rename new_name
 ```
-

docs/commands/dfr_replace-all.md

@@ -21,4 +21,3 @@ Replaces string
 ```shell
 > [abac abac abac] | dfr to-df | dfr replace-all -p a -r A
 ```
-

docs/commands/dfr_replace.md

@@ -21,4 +21,3 @@ Replaces string
 ```shell
 > [abc abc abc] | dfr to-df | dfr replace -p ab -r AB
 ```
-

docs/commands/dfr_rolling.md

@@ -26,4 +26,3 @@ Rolling max for a series
 ```shell
 > [1 2 3 4 5] | dfr to-df | dfr rolling max 2 | dfr drop-nulls
 ```
-

docs/commands/dfr_sample.md

@@ -27,4 +27,3 @@ Shows sample row using fraction and replace
 ```shell
 > [[a b]; [1 2] [3 4] [5 6]] | dfr to-df | dfr sample -f 0.5 -e
 ```
-

docs/commands/dfr_set-with-idx.md

@@ -23,4 +23,3 @@ Set value in selected rows from series
     let indices = ([0 2] | dfr to-df);
     $series | dfr set-with-idx 6 -i $indices
 ```
-

docs/commands/dfr_set.md

@@ -23,4 +23,3 @@ Shifts the values by a given period
     let mask = ($s | dfr is-null);
     $s | dfr set 0 --mask $mask
 ```
-

docs/commands/dfr_shape.md

@@ -16,4 +16,3 @@ Shows row and column shape
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr shape
 ```
-

docs/commands/dfr_shift.md

@@ -20,4 +20,3 @@ Shifts the values by a given period
 ```shell
 > [1 2 2 3 3] | dfr to-df | dfr shift 2 | dfr drop-nulls
 ```
-

docs/commands/dfr_slice.md

@@ -21,4 +21,3 @@ Create new dataframe from a slice of the rows
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr slice 0 1
 ```
-

docs/commands/dfr_sort.md

@@ -26,4 +26,3 @@ Create new sorted series
 ```shell
 > [3 4 1 2] | dfr to-df | dfr sort
 ```
-

docs/commands/dfr_str-lengths.md

@@ -16,4 +16,3 @@ Returns string lengths
 ```shell
 > [a ab abc] | dfr to-df | dfr str-lengths
 ```
-

docs/commands/dfr_str-slice.md

@@ -21,4 +21,3 @@ Creates slices from the strings
 ```shell
 > [abcded abc321 abc123] | dfr to-df | dfr str-slice 1 -l 2
 ```
-

docs/commands/dfr_strftime.md

@@ -22,4 +22,3 @@ Formats date
     let df = ([$dt $dt] | dfr to-df);
     $df | dfr strftime "%Y/%m/%d"
 ```
-

docs/commands/dfr_take.md

@@ -29,4 +29,3 @@ Takes selected rows from series
     let indices = ([0 2] | dfr to-df);
     $series | dfr take $indices
 ```
-

docs/commands/dfr_to-csv.md

@@ -27,4 +27,3 @@ Saves dataframe to csv file using other delimiter
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr to-csv test.csv -d '|'
 ```
-

docs/commands/dfr_to-df.md

@@ -31,4 +31,3 @@ Takes a list of booleans and creates a dataframe
 ```shell
 > [$true $true $false] | dfr to-df
 ```
-

docs/commands/dfr_to-dummies.md

@@ -21,4 +21,3 @@ Create new dataframe with dummy variables from a series
 ```shell
 > [1 2 2 3 3] | dfr to-df | dfr to-dummies
 ```
-

docs/commands/dfr_to-lowercase.md

@@ -16,4 +16,3 @@ Modifies strings to lowercase
 ```shell
 > [Abc aBc abC] | dfr to-df | dfr to-lowercase
 ```
-

docs/commands/dfr_to-nu.md

@@ -26,4 +26,3 @@ Shows tail rows from dataframe
 ```shell
 > [[a b]; [1 2] [3 4] [5 6]] | dfr to-df | dfr to-nu -t -n 1
 ```
-

docs/commands/dfr_to-parquet.md

@@ -20,4 +20,3 @@ Saves dataframe to csv file
 ```shell
 > [[a b]; [1 2] [3 4]] | dfr to-df | dfr to-parquet test.parquet
 ```
-