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Release history
* jq version 1.6 was released on Fri Nov 2 2018
* jq version 1.5 was released on Sat Aug 15 2015
* jq version 1.4 was released on Mon Jun 9 2014
* jq version 1.3 was released on Sun May 19 2013
* jq version 1.2 was released on Thu Dec 20 2012
* jq version 1.1 was released on Sun Oct 21 2012
* jq version 1.0 was released on Sun Oct 21 2012
New features in 1.6 since 1.5:
- Destructuring Alternation
- New Builtins:
- builtins/0
- stderr/0
- halt/0, halt_error/1
- isempty/1
- walk/1
- utf8bytelength/1
- localtime/0, strflocaltime/1
- SQL-style builtins
- and more!
- Add support for ASAN and UBSAN
- Make it easier to use jq with shebangs (8f6f28c)
- Add $ENV builtin variable to access environment
- Add JQ_COLORS env var for configuring the output colors
New features in 1.5 since 1.4:
- regular expressions (with Oniguruma)
- a library/module system
- many new builtins
- datetime builtins
- math builtins
- regexp-related builtins
- stream-related builtins (e.g., all/1, any/1)
- minimal I/O builtins (`inputs`, `debug`)
- new syntactic features, including:
- destructuring (`. as [$first, $second] | ...`)
- try/catch, generalized `?` operator, and label/break
- `foreach`
- multiple definitions of a function with different numbers of
arguments
- command-line arguments
- --join-lines / -j for raw output
- --argjson and --slurpfile
- --tab and --indent
- --stream (streaming JSON parser)
- --seq (RFC7464 JSON text sequence)
- --run-tests improvements
- optimizations:
- tail-call optimization
- reduce and foreach no longer leak a reference to .
New features in 1.4 since 1.3:
- command-line arguments
- jq --arg-file variable file
- jq --unbuffered
- jq -e / --exit-status (set exit status based on outputs)
- jq -S / --sort-keys (now jq no longer sorts object keys by
default
- syntax
- .. -> like // in XPath (recursive traversal)
- question mark (e.g., .a?) to suppress errors
- ."foo" syntax (equivalent to .["foo"])
- better error handling for .foo
- added % operator (modulo)
- allow negation without requiring extra parenthesis
- more function arguments (up to six)
- filters:
- any, all
- iterables, arrays, objects, scalars, nulls, booleans, numbers,
strings, values
- string built-ins:
- split
- join (join an array of strings with a given separator string)
- ltrimstr, rtrimstr
- startswith, endswith
- explode, implode
- fromjson, tojson
- index, rindex, indices
- math functions
- floor, sqrt, cbrt, etetera (depends on what's available from libm)
- libjq -- a C API interface to jq's JSON representation and for
running jq programs from C applications
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