[elpa] externals/mct 0557e59a90 1/2: Document how to find the completion category

[ELPA Syncer]

branch: externals/mct
commit 0557e59a90743699e443ccac3151c597f60b7c48
Author: Protesilaos Stavrou <info@protesilaos.com>
Commit: Protesilaos Stavrou <info@protesilaos.com>

    Document how to find the completion category
---
 README.org | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/README.org b/README.org
index 25df7a021e..bac618156f 100644
--- a/README.org
+++ b/README.org
@@ -330,6 +330,22 @@ thousands of candidates to the passlist.  So no ~command~, 
~function~,
 
 When in doubt, do not add a symbol to either the pass- or block- list.
 
+[[#h:499ee65d-429d-48c0-9e3a-a60ca649e32d][Find completion category]].
+
+*** Find completion category
+:PROPERTIES:
+:CUSTOM_ID: h:499ee65d-429d-48c0-9e3a-a60ca649e32d
+:END:
+
+While using a command that provides a minibuffer prompt, type =M-:= (the
+~eval-expression~ command) and evaluate =(mct--completion-category)=.  It
+will return the completion category, if any.  Note that this only works
+when the variable ~enable-recursive-minibuffers~ is non-nil.
+
+To review echo area messages, use =C-h e= (~view-echo-area-messages~).
+
+[[#h:1f42c4e6-53c1-4e8a-81ef-deab70822fa4][Known completion categories]].
+
 ** Size boundaries of the Completions
 :PROPERTIES:
 :CUSTOM_ID: h:2fcf708f-4edf-41f3-9e29-0e750f3a80af