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bug#32372: [PATCH] Add "uuid" to thing-at-point.el


From: Raimon Grau
Subject: bug#32372: [PATCH] Add "uuid" to thing-at-point.el
Date: Sat, 11 Aug 2018 12:37:51 +0100

Ivan Shmakov <address@hidden> writes:

>  > What to use here is a mostly a matter of personal style, and a bit of
>  > a bikeshed at that, so you are likely to get varied opinions.  At the
>  > end of the day it doesn’t really matter what you go with.
>
>       Yes.

I ended up using when (and indenting it correctly) if that's ok.

>From f7c76007aef325abc31871db108e7e48fe46022c Mon Sep 17 00:00:00 2001
From: Raimon Grau <address@hidden>
Date: Sun, 5 Aug 2018 22:47:30 +0100
Subject: [PATCH] Add uuid as allowed thingatpt symbol

* etc/NEWS: Mention changes in thingatpt.el.

* lisp/thingatpt.el (thing-at-point-uuid-regexp): Add regexp for uuid.
(top-level): Add 'bounds-of-thing-at-point' operation for 'uuid'.

* test/lisp/thingatpt-tests.el: Add tests for uuid at point.
---
 etc/NEWS                     |  6 ++++++
 lisp/thingatpt.el            | 25 ++++++++++++++++++++++---
 test/lisp/thingatpt-tests.el |  5 ++++-
 3 files changed, 32 insertions(+), 4 deletions(-)

diff --git a/etc/NEWS b/etc/NEWS
index a1c12a6..57b2586 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -96,6 +96,12 @@ option 'vc-hg-symbolic-revision-styles' to the value 
'("{rev}")'.
 ---
 ** shadowfile.el has been rewritten to support Tramp file names.
 
+---
+** thingatpt.el supports a new "thing" called 'uuid'.
+
+A symbol 'uuid' can be passed to thing-at-point and it returns the
+UUID at point.
+
 
 * New Modes and Packages in Emacs 26.2
 
diff --git a/lisp/thingatpt.el b/lisp/thingatpt.el
index 6a978fe..abeb167 100644
--- a/lisp/thingatpt.el
+++ b/lisp/thingatpt.el
@@ -58,7 +58,7 @@ forward-thing
   "Move forward to the end of the Nth next THING.
 THING should be a symbol specifying a type of syntactic entity.
 Possibilities include `symbol', `list', `sexp', `defun',
-`filename', `url', `email', `word', `sentence', `whitespace',
+`filename', `url', `email', `uuid', `word', `sentence', `whitespace',
 `line', and `page'."
   (let ((forward-op (or (get thing 'forward-op)
                        (intern-soft (format "forward-%s" thing)))))
@@ -73,7 +73,7 @@ bounds-of-thing-at-point
   "Determine the start and end buffer locations for the THING at point.
 THING should be a symbol specifying a type of syntactic entity.
 Possibilities include `symbol', `list', `sexp', `defun',
-`filename', `url', `email', `word', `sentence', `whitespace',
+`filename', `url', `email', `uuid', `word', `sentence', `whitespace',
 `line', and `page'.
 
 See the file `thingatpt.el' for documentation on how to define a
@@ -131,7 +131,7 @@ thing-at-point
   "Return the THING at point.
 THING should be a symbol specifying a type of syntactic entity.
 Possibilities include `symbol', `list', `sexp', `defun',
-`filename', `url', `email', `word', `sentence', `whitespace',
+`filename', `url', `email', `uuid', `word', `sentence', `whitespace',
 `line', `number', and `page'.
 
 When the optional argument NO-PROPERTIES is non-nil,
@@ -554,6 +554,25 @@ thing-at-point-email-regexp
 (put 'buffer 'end-op (lambda () (goto-char (point-max))))
 (put 'buffer 'beginning-op (lambda () (goto-char (point-min))))
 
+;; UUID
+
+(defconst thing-at-point-uuid-regexp
+  (rx bow
+      (repeat 8 hex-digit) "-"
+      (repeat 4 hex-digit) "-"
+      (repeat 4 hex-digit) "-"
+      (repeat 4 hex-digit) "-"
+      (repeat 12 hex-digit)
+      eow)
+  "A regular expression matching a UUID.
+
+See RFC 4122 for the description of the format.")
+
+(put 'uuid 'bounds-of-thing-at-point
+     (lambda ()
+       (when (thing-at-point-looking-at thing-at-point-uuid-regexp 36)
+         (cons (match-beginning 0) (match-end 0)))))
+
 ;;  Aliases
 
 (defun word-at-point ()
diff --git a/test/lisp/thingatpt-tests.el b/test/lisp/thingatpt-tests.el
index cfb57de..b4a5fd9 100644
--- a/test/lisp/thingatpt-tests.el
+++ b/test/lisp/thingatpt-tests.el
@@ -65,7 +65,10 @@ thing-at-point-test-data
     ("http://example.com/ab)c" 4 url "http://example.com/ab)c")
     ;; URL markup, lacking schema
     ("<url:address@hidden>" 1 url "mailto:address@hidden";)
-    ("<url:ftp.example.net/abc/>" 1 url "ftp://ftp.example.net/abc/";))
+    ("<url:ftp.example.net/abc/>" 1 url "ftp://ftp.example.net/abc/";)
+    ;; UUID, only hex is allowed
+    ("01234567-89ab-cdef-ABCD-EF0123456789" 1 uuid 
"01234567-89ab-cdef-ABCD-EF0123456789")
+    ("01234567-89ab-cdef-ABCD-EF012345678G" 1 uuid nil))
   "List of thing-at-point tests.
 Each list element should have the form
 
-- 
2.7.4


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