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Project Description
kanten
======

the enlightened pager. less paging. more content. read widely.
--------------------------------------------------------------

...because you have more than 80 columns

Origin:

kan-ten: Japanese for word for agar, a gelatinous substance derived from seaweed.

A program for reading in the terminal. A pager for the early 90s?

This program was inspired by a similar one called
[Tofu](http://amarsagoo.info/tofu/) for OS X, a column-based reader application,
where the columns are arranged horizontally. Given the aspect ratio of computer
monitors, I decided to create kanten to be a unix pager replacement (more and
less) that is not limited to 80 columns.

TODO
----
[x] horizontal progress bar indicator
[x] figure out how many columns are displayed, and adjust pbar accordingly
[x] max columns should always be shown
[x] progress bar should consider all visible columns as shown
[x] some vertical empty space at the top
[x] space bar should move whole screen over (displayed_columns)
[x] scroll using the mouse
[ ] middle mouse button pastes contests of X11 paste register into a new buffer
[ ] mouse events don't work after 'v' (entering editor)
[ ] d and u (^D and ^U) go forward and back a column (half-screen in less)
[x] reading from stdin
[x] process keyboard shortcuts after reading from stdin (the way less does)
[ ] read buffering (don't read the whole file before filling in)
- MUSTFIX for sane STDIN piping (e.g. git log | kanten)
- urwid's edit.py has an example of lazy loading
[ ] mouse interactions broken in xterm after sleeping kanten - what gives?
- can't click to select text in xterm
- cannot select text even after sleeping kanten
[ ] double spacing option for easier reading?
[x] specifying a filename from commandline
[ ] demo file that explains kanten (tutorial)
[ ] do a full install as a python package with an entry point
[ ] configuration in ~/.config/kanten
[ ] all configurable take defaults from ~/.config, but overwritten by params
[x] configurable number of columns (via -w or --width)
[x] automatically figure out size (for height, and number of columns)
[x] allow setting height from command line
[x] implement :set commands
(:set height, :set width)
[x] 'v' to edit the file , just like less
- disabled for stdin? at least if EOF not encountered
- wouldn't support editing stdin
[x] respect $EDITOR, use vim if EDITOR not set
[ ] would be even better if we check if vim exists, use vi otherwise
[ ] on exit from editing, refresh the file in kanten
[ ] open file to the right line (at least the top-left column's line)
- set cursor location either via search or mouseclick
- mouseclick should un-highlight the current match of search (if any) and
highlight the whole line instead
- actually - it might make sense to just use widget focus infrastructure
for this in urwid?
[ ] mouse click column detection is off by the size of the margins
- find it from window_width % column_width / num_columns
[ ] drag click events for paging (flick-click right to go forward, etc)
[ ] run_wrapper to restore previous screen?
- moar and bpython do this, i think
[ ] (refactor) move all initialization into a function, to allow for re-init
[ ] dynamic resizing of width
[ ] (via + and - commands, perhaps)
[ ] via ":set width=40"
[ ] respond to sigwinch and re-do the number of columns
- number displayed changed, so the pbar needs an update
[x] param parsing (e.g. add --help)
[x] hide the progress bar (ctrl-n is what zathura uses or something?)
[x] currently implemented via t
[ ] add a parameter to disable progress bar
[ ] add help dialog on h
- not ? - that's reverse search, but h and H and F1
[x] easter egg planted
[x] :help should work
[x] add : command mode
[x] support :q
[x] support :f for file info
[ ] don't allow deletion of ':' prompt in command mode
[ ] backspace in command mode should leave it? (like vim
( ) history (up and down arrows)
( ) q: and :^F command buffer?
[ ] (maybe) support multiple buffers?
- :n and :p (or :N) for next and previous
[ ] :e to read a different file?
- filename tab completion for :e
[x] . (dot) to repeat previous command (page up or down, next, etc)
[ ] support more less/more keys
[x] < and >
[x] z and w
[x] j and k (page-wise OK)
[x] = to show file name / info (ctrl-g should also work)
[x] ctrl-g should show status bar only once
[ ] others?
[ ] F - forward forever (for stdin)
[ ] control key combos
[x] ctrl-v ctrl-f for page forward and ctrl-b for back back
[x] ctrl-g for file info
[ ] (maybe) implement marking system (top lines?)
- like less, marks will only live for duration of program execution
[ ] support jumping to a particular line
- would go along with editing a file at that line
- and allow us to jump back into the same line after editing?
- jump to the line of the currently highlighted thing
[ ] support ctrl-i and ctrl-o location-list jumping
[x] reflow of text
[ ] (maybe) reading cursor (like dictator?)
[x] 'g' to go to the beginning
[ ] gg g0 g$ and other commands?
[ ] implement number prefixes
[x] 'G' to go to the end
[x] split boxes so that they partially fit
[x] clip off lines that are too long even in one go
[x] last line of text being cut-off
[x] fix formatting (spacing) for cells which were cut
[x] columns currently allowed to expand: don't let them
- boxadapter?
- options('given', width) ?
- use padding!!
[ ] (alignment) 'the less is' line currently getting screwed up :\
[ ] (refactor) start off with one Padding(text) and keep splitting in
- don't pre-split
- such an approach will be a reasonable way to go with searching, anyway
- i.e. highlight the word in every instance, and reflow?
- or at least to find the location of the word, and then index into the
right / approximate column
- also makes it reasonable to scroll line by line (daisy chain visible cols)
- stop after all visible columns are filled
[x] search using / (to seek around)
- use a footer / header of the frame widget to do this and :?
[x] enter do submit footer content
[x] esc to refocus the window
[ ] case insensitive search via -I command line parameter
[ ] incremental search via incsearch
[x] highlight words in the text
[x] highlight searched word (switch to ANSIText?)
[x] highlight diff output (via 'd', disable with 'D')
[ ] detect diff output
[x] toggle it via :set ft=diff
[x] force diff output with -d flag
[x] use diff output when openining .diff and .patch files
[ ] handle diff lines that span multiple columns properly
[ ] parse shell escaped characters properly
- so we can read man pages
- look at the piped output of grep --color=always
- I think the Qt console has some code for this?
[x] replace searched words with highlighted version
[ ] highlight current matched search item differently than some other
- traverse the contents, and change an 'important' to somehting else
[ ] wrap-around optionally
[x] going forward 4 times and then going back 4 doesn't work :(
maybe related:
File "/usr/lib/python2.7/dist-packages/urwid/widget.py", line 142, in cached_render validate_size(self, size, canv)
File "/usr/lib/python2.7/dist-packages/urwid/widget.py", line 112, in validate_size canv.rows(), size))
urwid.widget.WidgetError: Widget <filler box="" widget="" <columns="" box="" flow="" widget=""> valign='top'> rendered (193 x 45) canvas when passed size (193, 51
[x] (maybe) try cache invalidation? nope, _invalidate doesn't hel
[x] [cols.focus_position=0 seems to have done the trick!
[ ] bash completion for flags (is there one for python ArgParse code already?)
- yeap! use https://github.com/kislyuk/argcomplete
[ ] write some tests, with Travis and Coveralls badges in the readme?
[ ] look at how pudb xo and other urwid apps do testing
[ ] urwid tests are in e.g. /home/pi/code/urwid/urwid/tests/test_listbox.py
[ ] take a look at what @jlord accomplished with http://jlord.us/horizontal-web/
[ ] more has a way of listing multiple files
[x] hide progress bar (perhaps on timeout after paging through)
[ ] adding a keyboard shortcut should be sure to remove it from others
[ ] handle really short input gracefully
- put the first column on the left-most position
[ ] rest and markdown highlighting (if available)
[ ] use pygments for highlighting, when possible
[x] detect filetype, at least by filename
[x] .diff and .patch for ft=diff
[ ] .py for ft=python
[ ] see what rifle does in ranger - utilize those plugins / handling
[ ] fix bug for small width and few number of lines (looks ugly, spaces/line
breaks are missing)
[x] clear edit text on motion key
[ ] kanten.js
[ ] refactor to remove globals with instance variables
[ ] write a kanten man page
[ ] add section for COMPATIBILITY WITH MORE and COMPATIBILITY WITH LESS
[ ] -F or --quit-if-one-screen
Causes less to automatically exit if the entire file can be dis‐
played on the first screen.
[ ] -i or --ignore-case
Causes searches to ignore case; that is, uppercase and lowercase
are considered identical. This option is ignored if any upper‐
case letters appear in the search pattern; in other words, if a
pattern contains uppercase letters, then that search does not
ignore case.
[ ] -I or --IGNORE-CASE
Like -i, but searches ignore case even if the pattern contains
uppercase letters.
[ ] add \c and \C (insensitive and sensitive, respectively) to the
search parsing
[ ] support set ignorecase? set smartcase?
[ ] add saveas (to save STDIN input)
[ ] center single column
[ ] version string
[ ] :version command
[ ] corner cases when -t and -b \lim 0
[ ] for ipython: register .ipynb as a json lexer-able thing
pygments.lexers.web.JsonLexer
[ ] swallow last empty panel in the banner
[ ] make kanten importable (refactor out the cli aspects to make testing easier)
[ ] bug - height is exceeded in my piles (off by one?)
Release History

Release History

0.5.123

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.5.12

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Changelog content for this version goes here.

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0.5

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TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.5.0

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TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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0.5.00

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

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TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
kanten-0.5.123.tar.gz (15.6 kB) Copy SHA256 Checksum SHA256 Source Jul 10, 2014

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