[taler-exchange] branch master updated: -make gettext compatible

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 8a8cb1d2 -make gettext compatible
8a8cb1d2 is described below

commit 8a8cb1d2f988f31325226ed94a0f805eaa47c9ab
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Wed Aug 4 18:34:25 2021 +0200

    -make gettext compatible
---
 src/json/i18n.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/json/i18n.c b/src/json/i18n.c
index 1d3076e2..f927a71e 100644
--- a/src/json/i18n.c
+++ b/src/json/i18n.c
@@ -80,7 +80,9 @@ TALER_JSON_check_i18n (const json_t *i18n)
     if (! json_is_string (member))
       return false;
     /* Field name must be either of format "en_UK"
-       or just "en"; we do not care about capitalization */
+       or just "en"; we do not care about capitalization;
+       for syntax, see GNU Gettext manual, including
+       appendix A for rare language codes. */
     switch (strlen (field))
     {
     case 0:
@@ -107,6 +109,20 @@ TALER_JSON_check_i18n (const json_t *i18n)
       if (! isalpha (field[4]))
         return false;
       break;
+    case 6:
+      if (! isalpha (field[0]))
+        return false;
+      if (! isalpha (field[1]))
+        return false;
+      if ('_' != field[2])
+        return false;
+      if (! isalpha (field[3]))
+        return false;
+      if (! isalpha (field[4]))
+        return false;
+      if (! isalpha (field[5]))
+        return false;
+      break;
     default:
       return false;
     }

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