D7: editor multi-cursor support

Add secondary_cursors field to Editor with insert_char_multi, delete_back_multi, delete_forward_multi methods. Right-to-left processing ensures position shifts don't corrupt earlier insertions. 7 new tests: add/clear, all_positions, insert, delete_back, delete_forward, unicode, duplicate-add.
2026-07-05 22:29:19 +03:00
parent 7a2b0d5160
commit b8aac3c9bc
2226 changed files with 876572 additions and 2382 deletions
@@ -0,0 +1,81 @@
+# serial 8
+
+# Copyright (C) 2003, 2007, 2009-2017 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# See if we have a working tzset function.
+# If so, arrange to compile the wrapper function.
+# For at least Solaris 2.5.1 and 2.6, this is necessary
+# because tzset can clobber the contents of the buffer
+# used by localtime.
+
+# Written by Paul Eggert and Jim Meyering.
+
+AC_DEFUN([gl_FUNC_TZSET],
+[
+  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
+  AC_REQUIRE([gl_LOCALTIME_BUFFER_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_CHECK_FUNCS_ONCE([tzset])
+  if test $ac_cv_func_tzset = no; then
+    HAVE_TZSET=0
+  fi
+  gl_FUNC_TZSET_CLOBBER
+  REPLACE_TZSET=0
+  case "$gl_cv_func_tzset_clobber" in
+    *yes)
+      REPLACE_TZSET=1
+      AC_DEFINE([TZSET_CLOBBERS_LOCALTIME], [1],
+        [Define if tzset clobbers localtime's static buffer.])
+      gl_LOCALTIME_BUFFER_NEEDED
+      ;;
+  esac
+  case "$host_os" in
+    mingw*) REPLACE_TZSET=1 ;;
+  esac
+])
+
+# Set gl_cv_func_tzset_clobber.
+AC_DEFUN([gl_FUNC_TZSET_CLOBBER],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+  AC_CACHE_CHECK([whether tzset clobbers localtime buffer],
+                 gl_cv_func_tzset_clobber,
+  [
+  AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#include <time.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  time_t t1 = 853958121;
+  struct tm *p, s;
+  putenv ("TZ=GMT0");
+  p = localtime (&t1);
+  s = *p;
+  putenv ("TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00");
+  tzset ();
+  return (p->tm_year != s.tm_year
+          || p->tm_mon != s.tm_mon
+          || p->tm_mday != s.tm_mday
+          || p->tm_hour != s.tm_hour
+          || p->tm_min != s.tm_min
+          || p->tm_sec != s.tm_sec);
+}
+  ]])],
+       [gl_cv_func_tzset_clobber=no],
+       [gl_cv_func_tzset_clobber=yes],
+       [case "$host_os" in
+                  # Guess all is fine on glibc systems.
+          *-gnu*) gl_cv_func_tzset_clobber="guessing no" ;;
+                  # If we don't know, assume the worst.
+          *)      gl_cv_func_tzset_clobber="guessing yes" ;;
+        esac
+       ])])
+
+  AC_DEFINE([HAVE_RUN_TZSET_TEST], [1],
+    [Define to 1 if you have run the test for working tzset.])
+])