Homepage: https://github.com/haji-ali/transient-extras.git
Updated:
Extra features for transient
This package provides a number of additional transient infixes and switches.
In particular, the following are defined:
- `transient-extras-file-list-or-buffer' a defined argument that
can be used in a transient. It contains either the current
buffer, the name of the current file, or the names of the files
currently marked in `dired'.
- The class `transient-extras-exclusive-switch', which allows for
command line switches with defined options to be cycled through.
This is similar to `transient-switches', but the `choices' slot
is a list of cons cells, `(value . label)', with label used for
display. Ex:
(transient-define-argument lp-transient--orientation ()
:description "Print Orientation"
:class 'transient-extras-exclusive-switch
:key "o"
:argument-format "-oorientation-requested=%s"
:argument-regexp "\\(-oorientation-requested=\\(4\\|5\\|6\\)\\)"
:choices '(("4" . "90°(landscape)")
("5" . "-90°")
("6" . "180°")))
- The class `transient-extras-option-dynamic-choices' allows for
the options for option values to be determined dynamically. This
is particularly useful for programs which are configurable for
what the values are, or may need more complex logic to determine
them at run time. It does so through the use of a
`choices-function', as shown below.
(transient-define-argument transient-extras-a2ps-printer ()
:class 'transient-extras-option-dynamic-choices
:description "Printer"
:key "P"
:argument "-P"
:choices-function (transient-extras-make-command-filter-function
"a2ps" '("--list=printers")
(lambda (line)
(when (and (string-match-p "^-" line)
(not (string-match-p "Default" line))
(not (string-match-p "Unknown" line)))
(substring line 2))))
:prompt "Printer? ")
To simplify this, two additional functions are provided:
`transient-extras-make-command-filter-function' and
`transient-extras-filter-command-output'. The first takes three
arguments, a program to run, a list of argument to pass to it,
and a function to filter lines, with nils removed; it then
returns a closure which calls the second.