gettext

e350fec2 - xgettext: Support up to 4 format string parsers at the same time.

xgettext: Support up to 4 format string parsers at the same time. * gettext-tools/src/xg-arglist-context.h (struct flag_context_ty): Add fields is_format4, pass_format4. * gettext-tools/src/xg-arglist-context.c (null_context, passthrough_context, inherited_context, passthrough_context_circular_list, flag_context_list_table_add): Update. * gettext-tools/src/xg-message.c (set_format_flags_from_context, decide_is_format, remember_a_message_plural): Update. * gettext-tools/src/xgettext.h (current_formatstring_parser4): New declaration. * gettext-tools/src/xgettext.c (struct extractor_ty): Add field formatstring_parser4. (current_formatstring_parser4): New variable. (main, extract_from_file, language_to_extractor): Update.