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bug#26656: unidata-check needs updating for special casing


From: Michal Nazarewicz
Subject: bug#26656: unidata-check needs updating for special casing
Date: Mon, 19 Jun 2017 22:30:54 +0200

> Michal Nazarewicz wrote:
>> Should I just skip the check for special casing properties.

On Mon, Jun 19 2017, Glenn Morris wrote:
> Thanks, that sounds fine.

All right then.  Unless there are some objections I’ll get the following
submitted in a few days:

---- >8 ----------------------------------------------------------------
>From 467660531e2aa6f68ef431a1dcc52823a6967d42 Mon Sep 17 00:00:00 2001
From: Michal Nazarewicz <address@hidden>
Date: Mon, 19 Jun 2017 21:34:25 +0200
Subject: [PATCH] =?UTF-8?q?unidata:=20don=E2=80=99t=20check=20special=20ca?=
 =?UTF-8?q?sing=20in=20unidata-check=20=20(bug#26656)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* admin/unidata/unidata-gen.el (unidata-check): Do not test special
casing mapping of characters since that mapping is not constructed from
the unidata.txt file.
Also, check for integer decoder and cons char earlier so that less
unnecessary processing is performed.
---
 admin/unidata/unidata-gen.el | 89 ++++++++++++++++++++++----------------------
 1 file changed, 45 insertions(+), 44 deletions(-)

diff --git a/admin/unidata/unidata-gen.el b/admin/unidata/unidata-gen.el
index 64e2babd4b9..42695f9bebb 100644
--- a/admin/unidata/unidata-gen.el
+++ b/admin/unidata/unidata-gen.el
@@ -1346,50 +1346,51 @@ unidata-check
             (generator (unidata-prop-generator proplist))
             (default-value (unidata-prop-default proplist))
             (val-list (unidata-prop-val-list proplist))
-            (table (progn
-                     (message "Generating %S table..." prop)
-                     (funcall generator prop index default-value val-list)))
-            (decoder (char-table-extra-slot table 1))
-            (alist (and (functionp index)
-                        (funcall index)))
-            (check #x400))
-       (dolist (e unidata-list)
-         (let* ((char (car e))
-                (val1
-                 (if alist (nth 1 (assoc char alist))
-                   (nth index e)))
-                val2)
-           (if (and (stringp val1) (= (length val1) 0))
-               (setq val1 nil))
-           (unless (or (consp char)
-                       (integerp decoder))
-             (setq val2
-                   (cond ((functionp decoder)
-                          (funcall decoder char (aref table char) table))
-                         (t            ; must be nil
-                          (aref table char))))
-             (if val1
-                 (cond ((eq generator 'unidata-gen-table-symbol)
-                        (setq val1 (intern val1)))
-                       ((eq generator 'unidata-gen-table-integer)
-                        (setq val1 (string-to-number val1)))
-                       ((eq generator 'unidata-gen-table-character)
-                        (setq val1 (string-to-number val1 16)))
-                       ((eq generator 'unidata-gen-table-decomposition)
-                        (setq val1 (unidata-split-decomposition val1))))
-               (cond ((eq prop 'decomposition)
-                      (setq val1 (list char)))
-                     ((eq prop 'bracket-type)
-                      (setq val1 'n))))
-             (when (>= char check)
-               (message "%S %04X" prop check)
-               (setq check (+ check #x400)))
-             (or (equal val1 val2)
-                 ;; <control> characters get a 'name' property of nil
-                 (and (eq prop 'name) (string= val1 "<control>") (null val2))
-                 (insert (format "> %04X %S\n< %04X %S\n"
-                                 char val1 char val2)))
-             (sit-for 0))))))))
+            (check #x400)
+            table decoder alist)
+        (unless (eq generator 'unidata-gen-table-special-casing)
+          (setq table (progn
+                        (message "Generating %S table..." prop)
+                        (funcall generator prop index default-value val-list))
+                decoder (char-table-extra-slot table 1))
+          (unless (integerp decoder)
+            (setq alist (and (functionp index) (funcall index)))
+            (dolist (e unidata-list)
+              (let ((char (car e)) val1 val2)
+                (unless (consp char)
+                  (setq val1 (if alist
+                                 (nth 1 (assoc char alist))
+                               (nth index e)))
+                  (and (stringp val1)
+                       (= (length val1) 0)
+                       (setq val1 nil))
+                  (if val1
+                      (cond ((eq generator 'unidata-gen-table-symbol)
+                             (setq val1 (intern val1)))
+                            ((eq generator 'unidata-gen-table-integer)
+                             (setq val1 (string-to-number val1)))
+                            ((eq generator 'unidata-gen-table-character)
+                             (setq val1 (string-to-number val1 16)))
+                            ((eq generator 'unidata-gen-table-decomposition)
+                             (setq val1 (unidata-split-decomposition val1))))
+                    (cond ((eq prop 'decomposition)
+                           (setq val1 (list char)))
+                          ((eq prop 'bracket-type)
+                           (setq val1 'n))))
+                  (setq val2 (aref table char))
+                  (when decoder
+                    (setq val2 (funcall decoder char val2 table)))
+                  (when (>= char check)
+                    (message "%S %04X" prop check)
+                    (setq check (+ check #x400)))
+                  (or (equal val1 val2)
+                      ;; <control> characters get a 'name' property of nil
+                      (and (eq prop 'name)
+                           (string= val1 "<control>")
+                           (null val2))
+                      (insert (format "> %04X %S\n< %04X %S\n"
+                                      char val1 char val2)))
+                  (sit-for 0))))))))))
 
 ;; The entry functions.  They generate files described in the header
 ;; comment of this file.
---- >8 ----------------------------------------------------------------

A lot of the changes is white-space so the difference is actually
smaller than it looks.  It adds (eq generator
'unidata-gen-table-special-casing) condition and moves (integerp
decoder) and (consp char) tests earlier.

> If the check is actually doing anything useful, it would be good to
> convert it to an ert test under test/, and add something similar for
> SpecialCasing, if that makes sense.

Honestly I hoped you would know what the intention of the check is.

Special casing property has some sanity tests in
test/src/casefiddle-tests.el (namely the
casefiddle-tests-char-properties test case).

I feel like the test would be better written with just a few values for
every property rather than writing a complicated function testing all
the data.

-- 
Best regards
ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ
«If at first you don’t succeed, give up skydiving»





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