[elpa] externals/shell-command+ 604c0915a2 03/13: Update 'shell-command+-features' docstring

[ELPA Syncer]

branch: externals/shell-command+
commit 604c0915a2bc8f33794e447e527993866dfa6884
Author: Philip Kaludercic <philipk@posteo.net>
Commit: Philip Kaludercic <philipk@posteo.net>

    Update 'shell-command+-features' docstring
---
 shell-command+.el | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/shell-command+.el b/shell-command+.el
index ebaf0508d1..453cee32d0 100644
--- a/shell-command+.el
+++ b/shell-command+.el
@@ -119,9 +119,14 @@ is specified."
         #'shell-command+-implicit-cd)
   "List of features to use by `shell-command+'.
 Each element of the list is a symbol designating a function to
-call in order.  Each is passed the parsed shell command and an
-form, and a context to evaluate the form in using `eval', and
-returns the modified command, form and context in a list."
+call in order.  Each is passed the parsed shell command (see
+`shell-command+-parse'), and two functions implementing the
+\"main functionality\" and a context.  The former is invoked with
+three arguments, the final command string, and two points
+designating the beginning and ending of the implicit region.  The
+context function is invoked with the previous function passed as
+a function object and the same argument as the function,
+totalling to four arguments."
   :type '(repeat function))