[PATCH] po: update XGETTEXT_OPTIONS

[Dmitry V. Levin]

Recognize sgettext as a macro which is used for translations.

Flag _, N_, and sgettext with pass-c-format.  The effect of this
specification is that xgettext will propagate format string
requirements for _, N_, and sgettext calls to their first arguments,
and thus mark them as format strings.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
 po/ChangeLog |  4 ++++
 po/Makevars  | 11 +++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/po/ChangeLog b/po/ChangeLog
index 798db019..50439333 100644
--- a/po/ChangeLog
+++ b/po/ChangeLog
@@ -1,3 +1,7 @@
+2021-03-21  Dmitry V. Levin  <ldv@altlinux.org>
+
+	* Makevars (XGETTEXT_OPTIONS): Update.
+
 2021-02-21  Piotr Drąg  <piotrdrag@gmail.com>
 
 	* pl.po: Updated.
diff --git a/po/Makevars b/po/Makevars
index 086de588..692394cc 100644
--- a/po/Makevars
+++ b/po/Makevars
@@ -8,8 +8,15 @@ subdir = po
 top_builddir = ..
 
 # These options get passed to xgettext.
-XGETTEXT_OPTIONS = --keyword=_ --keyword=N_  --flag=error:3:c-format \
-		   --flag=ERROR:1:c-format --flag=argp_error:2:c-format \
+XGETTEXT_OPTIONS = --keyword=_ \
+		   --keyword=N_ \
+		   --keyword=sgettext:1g \
+		   --flag=_:1:pass-c-format \
+		   --flag=N_:1:pass-c-format \
+		   --flag=sgettext:1:pass-c-format \
+		   --flag=error:3:c-format \
+		   --flag=ERROR:1:c-format \
+		   --flag=argp_error:2:c-format \
 		   --add-comments
 
 # This is the copyright holder that gets inserted into the header of the
-- 
ldv