[PATCH] Add Transliterations for Unicode Misc. Mathematical Symbols-A/B [BZ #23132]

[Arjun Shankar <arjun dot is at lostca dot se>]

This commit adds previously missing transliterations for several code points
in the Unicode blocks "Miscellaneous Mathematical Symbols-A/B" -
transliterated to their approximate ASCII representations.  It also adds a
corresponding iconv transliteration test.
---
 localedata/Makefile                 |   4 +-
 localedata/locales/translit_neutral |  52 +++++++++++++-
 localedata/tst-iconv-math-trans.c   | 104 ++++++++++++++++++++++++++++
 3 files changed, 157 insertions(+), 3 deletions(-)
 create mode 100644 localedata/tst-iconv-math-trans.c

diff --git a/localedata/Makefile b/localedata/Makefile
index ce6a750144..89ba404a76 100644
--- a/localedata/Makefile
+++ b/localedata/Makefile
@@ -156,7 +156,7 @@ tests = $(locale_test_suite) tst-digits tst-setlocale bug-iconv-trans \
 	tst-leaks tst-mbswcs1 tst-mbswcs2 tst-mbswcs3 tst-mbswcs4 tst-mbswcs5 \
 	tst-mbswcs6 tst-xlocale1 tst-xlocale2 bug-usesetlocale \
 	tst-strfmon1 tst-sscanf bug-setlocale1 tst-setlocale2 tst-setlocale3 \
-	tst-wctype
+	tst-wctype tst-iconv-math-trans
 tests-static = bug-setlocale1-static
 tests += $(tests-static)
 ifeq (yes,$(build-shared))
@@ -287,6 +287,8 @@ LOCALES := \
 	$(NULL)
 
 include ../gen-locales.mk
+
+$(objpfx)tst-iconv-math-trans.out: $(gen-locales)
 endif
 
 include ../Rules
diff --git a/localedata/locales/translit_neutral b/localedata/locales/translit_neutral
index e3639c0a75..72f66220b7 100644
--- a/localedata/locales/translit_neutral
+++ b/localedata/locales/translit_neutral
@@ -743,10 +743,22 @@ include "translit_wide";""
 <U263A> "<U003A><U0029>"
 % BLACK SMILING FACE
 <U263B> "<U003A><U0029>"
-% MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET⟫
-<U27EB> "<U003E><U003E>"
+% MATHEMATICAL LEFT WHITE SQUARE BRACKET
+<U27E6> "<U005B><U007C>"
+% MATHEMATICAL RIGHT WHITE SQUARE BRACKET
+<U27E7> "<U007C><U005D>"
+% MATHEMATICAL LEFT ANGLE BRACKET
+<U27E8> <U003C>
+% MATHEMATICAL RIGHT ANGLE BRACKET
+<U27E9> <U003E>
 % MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
 <U27EA> "<U003C><U003C>"
+% MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
+<U27EB> "<U003E><U003E>"
+% MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET
+<U27EC> "<U0028><U0028>"
+% MATHEMATICAL RIGHT WHITE TORTOISE SHELL BRACKET
+<U27ED> "<U0029><U0029>"
 % MATHEMATICAL LEFT FLATTENED PARENTHESIS
 <U27EE> <U0028>
 % MATHEMATICAL RIGHT FLATTENED PARENTHESIS
@@ -755,6 +767,42 @@ include "translit_wide";""
 <U27CB> <U002F>
 % MATHEMATICAL FALLING DIAGONAL
 <U27CD> <U005C>
+% TRIPLE VERTICAL BAR DELIMITER
+<U2980> "<U007C><U007C><U007C>"
+% LEFT WHITE CURLY BRACKET
+<U2983> "<U007B><U007C>"
+% RIGHT WHITE CURLY BRACKET
+<U2984> "<U007C><U007D>"
+% LEFT WHITE PARENTHESIS
+<U2985> "<U0028><U0028>"
+% RIGHT WHITE PARENTHESIS
+<U2986> "<U0029><U0029>"
+% Z NOTATION LEFT IMAGE BRACKET
+<U2987> "<U0028><U007C>"
+% Z NOTATION RIGHT IMAGE BRACKET
+<U2988> "<U007C><U0029>"
+% Z NOTATION LEFT BINDING BRACKET
+<U2989> "<U003C><U007C>"
+% Z NOTATION RIGHT BINDING BRACKET
+<U298A> "<U007C><U003E>"
+% EQUALS SIGN AND SLANTED PARALLEL
+<U29E3> <U0023>
+% IDENTICAL TO AND SLANTED PARALLEL
+<U29E5> <U0023>
+% REVERSE SOLIDUS OPERATOR
+<U29F5> <U005C>
+% BIG SOLIDUS
+<U29F8> <U002F>
+% BIG REVERSE SOLIDUS
+<U29F9> <U005C>
+% LEFT-POINTING CURVED ANGLE BRACKET
+<U29FC> <U003C>
+% RIGHT-POINTING CURVED ANGLE BRACKET
+<U29FD> <U003E>
+% TINY
+<U29FE> <U002B>
+% MINY
+<U29FF> <U002D>
 % LEFT ANGLE BRACKET
 <U3008> <U003C>
 % RIGHT ANGLE BRACKET
diff --git a/localedata/tst-iconv-math-trans.c b/localedata/tst-iconv-math-trans.c
new file mode 100644
index 0000000000..32473bbe3e
--- /dev/null
+++ b/localedata/tst-iconv-math-trans.c
@@ -0,0 +1,104 @@
+/* Test some mathematical operator transliterations (BZ #23132)
+
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <iconv.h>
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+  iconv_t cd;
+
+  /* str[] = "⟦ ⟧ ⟨ ⟩"
+             " ⟬ ⟭ ⦀"
+             " ⦃ ⦄ ⦅ ⦆"
+             " ⦇ ⦈ ⦉ ⦊"
+             " ⧣ ⧥ ⧵ ⧸ ⧹"
+             " ⧼ ⧽ ⧾ ⧿";  */
+
+  const char str[] = "\u27E6 \u27E7 \u27E8 \u27E9"
+                     " \u27EC \u27ED \u2980"
+                     " \u2983 \u2984 \u2985 \u2986"
+                     " \u2987 \u2988 \u2989 \u298A"
+                     " \u29E3 \u29E5 \u29F5 \u29F8 \u29F9"
+                     " \u29FC \u29FD \u29FE \u29FF";
+
+  const char expected[] = "[| |] < >"
+                          " (( )) |||"
+                          " {| |} (( ))"
+                          " (| |) <| |>"
+                          " # # \\ / \\"
+                          " < > + -";
+
+  char *inptr = (char *) str;
+  size_t inlen = strlen (str) + 1;
+  char outbuf[500];
+  char *outptr = outbuf;
+  size_t outlen = sizeof (outbuf);
+  int result = 0;
+  size_t n;
+
+  if (setlocale (LC_ALL, "en_US.UTF-8") == NULL)
+    FAIL_EXIT1 ("setlocale failed");
+
+  cd = iconv_open ("ASCII//TRANSLIT", "UTF-8");
+  if (cd == (iconv_t) -1)
+    FAIL_EXIT1 ("iconv_open failed");
+
+  n = iconv (cd, &inptr, &inlen, &outptr, &outlen);
+  if (n != 24)
+    {
+      if (n == (size_t) -1)
+        printf ("iconv() returned error: %m\n");
+      else
+        printf ("iconv() returned %Zd, expected 24\n", n);
+      result = 1;
+    }
+  if (inlen != 0)
+    {
+      puts ("not all input consumed");
+      result = 1;
+    }
+  else if (inptr - str != strlen (str) + 1)
+    {
+      printf ("inptr wrong, advanced by %td\n", inptr - str);
+      result = 1;
+    }
+  if (memcmp (outbuf, expected, sizeof (expected)) != 0)
+    {
+      printf ("result wrong: \"%.*s\", expected: \"%s\"\n",
+              (int) (sizeof (outbuf) - outlen), outbuf, expected);
+      result = 1;
+    }
+  else if (outlen != sizeof (outbuf) - sizeof (expected))
+    {
+      printf ("outlen wrong: %Zd, expected %Zd\n", outlen,
+              sizeof (outbuf) - 15);
+      result = 1;
+    }
+  else
+    printf ("output is \"%s\" which is OK\n", outbuf);
+
+  return result;
+}
+
+#include <support/test-driver.c>
-- 
2.21.0