The newest version of jless ships with a handful of new helpful features:
yscommand to copy unescaped string literals to the clipboard
pcommands, analogous to the
ycommands, that print simply content to the screen. Useful for viewing long string values, or if the clipboard functionality isn't working
Ecommands, analogous to the existing
ecommands, for deeply collapsing/expanding values
yswill copy unescaped string literals to the clipboard. Control characters remain escaped.
Support showing line numbers, both absolute and/or relative. Absolute line numbers refer to what line number a given node would appear on if the document were pretty printed. This means there are discontinuities when in data mode because closing brackets and braces aren't displayed. Relative line numbers show how far a line is relative to the currently focused line. The behavior of the various combinations of these settings matches vim: when using just relative line numbers alone, the focused line will show 0, but when both flags are enabled the focused line will show its absolute line number.
Absolute line numbers are enabled by default, but not relative line numbers. These
can be enabled/disabled/re-enabled via command line flags
--no-relative-line-numbers, or via the short flags
These settings can also be modified while jless is running. Entering
:set relativenumber will enable these settings,
:set norelativenumber will disable them, and
:set relativenumber! will toggle them, matching
There is not yet support for a jless config file, so if you would like relative
line numbers by default, it is recommended to set up an alias:
alias jless=jless --line-numbers --relative-line-numbers.
. When using
(lowercase 'g'), if the desired line number is hidden inside of a collapsed container, the last visible line number before the desired one will be focused. When using
(uppercase 'G'), all the ancestors of the desired line will be expanded to ensure it is visible.
Ecommands, analogous to the existing
ecommands, to deeply collapse/expand a node and all its siblings.
) is now inverted. Additionally, a
▶is always displayed next to the currently focused line, even if the focused node is a primitive. Together these changes should make it more clear which line is focused, especially when the terminal's current style doesn't support dimming (
ESC [ 2 m).
ecommands (and the new
Ecommands), the focused row will stay at the same spot on the screen. (Previously jless would try to keep the same row visible at the top of the screen, which didn't make sense.)
ESC [ 2 K) for each line, instead of a single "clear screen" escape
code (ESC [ 2 J), in the hopes of reducing flicking when scrolling.
This release ships with two major new features: basic YAML support and copying to clipboard!
jless will now check the file extension of the input file,
and automatically parse
.yaml files as
YAML and use the same viewer as for JSON data. Alternatively passing in
--yaml flag will force
jless to parse the
input as YAML and can be used when reading in YAML data from stdin.
YAML aliases are automatically expanded, but their corresponding anchors
are not visible, nor are comments. YAML supports non-string keys, and
even non-scalar keys in mappings (e.g., the key of map can be an array
with multiple elements). Non-string keys are shown with square brackets,
[true]: "value", instead of quotes. Non-scalar keys are
handled on the screen and displayed properly, but you cannot expand and
collapse their individual elements.
While navigating data, jless also now supports copying various items to your system clipboard.
yywill copy the value of the currently focused node, pretty printed
yvwill copy the value of the currently focused node in a "nicely" printed one-line format
ykwill copy the key of the current key/value pair
ypwill copy the path from the root JSON element to the currently focused node, e.g.,
yp, but always uses the bracket form for object keys, e.g.,
["foo"]["bar"], which is useful if the environment where you'll paste the path doesn't support the
.keyformat, like in Python
yqwill copy a
jqstyle path that will select the currently focused node, e.g.,
ctrl-dcommands to jump up and down by half the screen's height, or by a specified number of lines.
ctrl-fcommands for scrolling up and down by the height of the screen. (Aliases for
ctrl-dto cancel entering search input.
i, but was undocumented;
ihas become unmapped.)
#) all now accept count arguments
Introducing jless, a command-line JSON viewer.
This release represents a significant milestone: a complete set of basic functionality, without any major bugs.
This GitHub issue details much of the functionality implemented to get to this point. Spiritually, completion of many of the tasks listed there represent versions 0.1 - 0.6.
The intention is to not release a 1.0 version until Windows support is added.