[newlib-cygwin/main] Cygwin: /proc/locales: fix sd_IN locale

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=9296f134fb5aa808893d5bbf68b84d6b1edc193b

commit 9296f134fb5aa808893d5bbf68b84d6b1edc193b
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Fri Mar 24 11:47:23 2023 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Fri Mar 24 12:50:59 2023 +0100

    Cygwin: /proc/locales: fix sd_IN locale
    
    Due to the way locales are evaluated in Windows, we can't ask for
    the script of the "sd-IN" locale, because Windows only knows the
    "sd-Deva-IN" locale.  So asking for the script of the "sd" locale
    returns "Arab;", because "sd" is converted to "sd-Arab-PK".
    
    Special case "sd-IN" to workaround that issue.
    
    Fixes: c42b98bdc665 ("Cygwin: introduce /proc/codesets and /proc/locales")
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/fhandler/proc.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler/proc.cc b/winsup/cygwin/fhandler/proc.cc
index d5e3c60fcf1a..3dc0421a53b4 100644
--- a/winsup/cygwin/fhandler/proc.cc
+++ b/winsup/cygwin/fhandler/proc.cc
@@ -2193,6 +2193,11 @@ format_proc_locale_proc (LPWSTR win_locale, DWORD info, LPARAM param)
       else
 	return TRUE;
     }
+  /* "sd-IN" is no valid Windows locale, only "sd-Deva-IN" is.  However,
+     asking for LOCALE_SSCRIPTS below returns "Arab;" because the first "sd"
+     locale Windows finds is "sd-Arab-PK", so we have to override this here. */
+  else if (!wcscmp (iso639, L"sd") && !wcscmp (iso3166, L"IN"))
+    strcpy (posix_loc, "sd_IN");
   /* In all other cases, we check if the script from the Windows
      locale is the default locale in that language.  If not, we
      add it as modifier if possible, or skip it */
@@ -2242,8 +2247,10 @@ format_proc_locale_proc (LPWSTR win_locale, DWORD info, LPARAM param)
      changing the codeset and other stuff. */
   if (!wcscmp (iso639, L"be") && !wcscmp (iso3166, L"BY"))
     stpcpy (modifier, "@latin");
-  if (!wcscmp (iso639, L"tt") && !wcscmp (iso3166, L"RU"))
+  else if (!wcscmp (iso639, L"tt") && !wcscmp (iso3166, L"RU"))
     stpcpy (modifier, "@iqtelif");
+  else if (!wcscmp (iso639, L"sd") && !wcscmp (iso3166, L"IN"))
+    stpcpy (modifier, "@devanagari");
    /* If the base locale is ISO-8859-1 and the locale defines currency
       as EUR, add a @euro locale. For historical reasons there's also
       a greek @euro locale, albeit it doesn't change the codeset. */