Index: Modules/readline.c
===================================================================
--- Modules/readline.c (nonexistent)
+++ Modules/readline.c (revision 5)
@@ -0,0 +1,1515 @@
+/* This module makes GNU readline available to Python. It has ideas
+ * contributed by Lee Busby, LLNL, and William Magro, Cornell Theory
+ * Center. The completer interface was inspired by Lele Gaifax. More
+ * recently, it was largely rewritten by Guido van Rossum.
+ */
+
+/* Standard definitions */
+#include "Python.h"
+#include <stddef.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/time.h>
+
+/* This seems to be needed for set_pre_input_hook to work */
+#define HAVE_RL_PRE_INPUT_HOOK 1
+
+#if defined(HAVE_SETLOCALE)
+/* GNU readline() mistakenly sets the LC_CTYPE locale.
+ * This is evil. Only the user or the app's main() should do this!
+ * We must save and restore the locale around the rl_initialize() call.
+ */
+#define SAVE_LOCALE
+#include <locale.h>
+#endif
+
+#ifdef SAVE_LOCALE
+# define RESTORE_LOCALE(sl) { setlocale(LC_CTYPE, sl); free(sl); }
+#else
+# define RESTORE_LOCALE(sl)
+#endif
+
+#ifdef WITH_EDITLINE
+# include <editline/readline.h>
+#else
+/* GNU readline definitions */
+# undef HAVE_CONFIG_H /* Else readline/chardefs.h includes strings.h */
+# include <readline/readline.h>
+# include <readline/history.h>
+#endif
+
+#ifdef HAVE_RL_COMPLETION_MATCHES
+#define completion_matches(x, y) \
+ rl_completion_matches((x), ((rl_compentry_func_t *)(y)))
+#else
+#if defined(_RL_FUNCTION_TYPEDEF)
+extern char **completion_matches(char *, rl_compentry_func_t *);
+#else
+
+#if !defined(__APPLE__)
+extern char **completion_matches(char *, CPFunction *);
+#endif
+#endif
+#endif
+
+/*
+ * It is possible to link the readline module to the readline
+ * emulation library of editline/libedit.
+ *
+ * This emulation library is not 100% API compatible with the "real" readline
+ * and cannot be detected at compile-time,
+ * hence we use a runtime check to detect if the Python readline module is
+ * linked to libedit.
+ *
+ * Currently there is one known API incompatibility:
+ * - 'get_history' has a 1-based index with GNU readline, and a 0-based
+ * index with older versions of libedit's emulation.
+ * - Note that replace_history and remove_history use a 0-based index
+ * with both implementations.
+ */
+static int using_libedit_emulation = 0;
+static const char libedit_version_tag[] = "EditLine wrapper";
+
+static int8_t libedit_history_start = 0;
+static int8_t libedit_append_replace_history_offset = 0;
+
+#ifdef HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK
+static void
+on_completion_display_matches_hook(char **matches,
+ int num_matches, int max_length);
+#endif
+
+/* Memory allocated for rl_completer_word_break_characters
+ (see issue #17289 for the motivation). */
+static char *completer_word_break_characters;
+
+typedef struct {
+ /* Specify hook functions in Python */
+ PyObject *completion_display_matches_hook;
+ PyObject *startup_hook;
+ PyObject *pre_input_hook;
+
+ PyObject *completer; /* Specify a word completer in Python */
+ PyObject *begidx;
+ PyObject *endidx;
+} readlinestate;
+
+static inline readlinestate*
+get_readline_state(PyObject *module)
+{
+ void *state = PyModule_GetState(module);
+ assert(state != NULL);
+ return (readlinestate *)state;
+}
+
+/*[clinic input]
+module readline
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=ad49da781b9c8721]*/
+
+static int
+readline_clear(PyObject *m)
+{
+ readlinestate *state = get_readline_state(m);
+ Py_CLEAR(state->completion_display_matches_hook);
+ Py_CLEAR(state->startup_hook);
+ Py_CLEAR(state->pre_input_hook);
+ Py_CLEAR(state->completer);
+ Py_CLEAR(state->begidx);
+ Py_CLEAR(state->endidx);
+ return 0;
+}
+
+static int
+readline_traverse(PyObject *m, visitproc visit, void *arg)
+{
+ readlinestate *state = get_readline_state(m);
+ Py_VISIT(state->completion_display_matches_hook);
+ Py_VISIT(state->startup_hook);
+ Py_VISIT(state->pre_input_hook);
+ Py_VISIT(state->completer);
+ Py_VISIT(state->begidx);
+ Py_VISIT(state->endidx);
+ return 0;
+}
+
+static void
+readline_free(void *m)
+{
+ readline_clear((PyObject *)m);
+}
+
+static PyModuleDef readlinemodule;
+
+#define readlinestate_global ((readlinestate *)PyModule_GetState(PyState_FindModule(&readlinemodule)))
+
+
+/* Convert to/from multibyte C strings */
+
+static PyObject *
+encode(PyObject *b)
+{
+ return PyUnicode_EncodeLocale(b, "surrogateescape");
+}
+
+static PyObject *
+decode(const char *s)
+{
+ return PyUnicode_DecodeLocale(s, "surrogateescape");
+}
+
+
+/*
+Explicitly disable bracketed paste in the interactive interpreter, even if it's
+set in the inputrc, is enabled by default (eg GNU Readline 8.1), or a user calls
+readline.read_init_file(). The Python REPL has not implemented bracketed
+paste support. Also, bracketed mode writes the "\x1b[?2004h" escape sequence
+into stdout which causes test failures in applications that don't support it.
+It can still be explicitly enabled by calling readline.parse_and_bind("set
+enable-bracketed-paste on"). See bpo-42819 for more details.
+
+This should be removed if bracketed paste mode is implemented (bpo-39820).
+*/
+
+static void
+disable_bracketed_paste(void)
+{
+ if (!using_libedit_emulation) {
+ rl_variable_bind ("enable-bracketed-paste", "off");
+ }
+}
+
+/* Exported function to send one line to readline's init file parser */
+
+/*[clinic input]
+readline.parse_and_bind
+
+ string: object
+ /
+
+Execute the init line provided in the string argument.
+[clinic start generated code]*/
+
+static PyObject *
+readline_parse_and_bind(PyObject *module, PyObject *string)
+/*[clinic end generated code: output=1a1ede8afb9546c1 input=8a28a00bb4d61eec]*/
+{
+ char *copy;
+ PyObject *encoded = encode(string);
+ if (encoded == NULL) {
+ return NULL;
+ }
+ /* Make a copy -- rl_parse_and_bind() modifies its argument */
+ /* Bernard Herzog */
+ copy = PyMem_Malloc(1 + PyBytes_GET_SIZE(encoded));
+ if (copy == NULL) {
+ Py_DECREF(encoded);
+ return PyErr_NoMemory();
+ }
+ strcpy(copy, PyBytes_AS_STRING(encoded));
+ Py_DECREF(encoded);
+ rl_parse_and_bind(copy);
+ PyMem_Free(copy); /* Free the copy */
+ Py_RETURN_NONE;
+}
+
+/* Exported function to parse a readline init file */
+
+/*[clinic input]
+readline.read_init_file
+
+ filename as filename_obj: object = None
+ /
+
+Execute a readline initialization file.
+
+The default filename is the last filename used.
+[clinic start generated code]*/
+
+static PyObject *
+readline_read_init_file_impl(PyObject *module, PyObject *filename_obj)
+/*[clinic end generated code: output=8e059b676142831e input=4c80c473e448139d]*/
+{
+ PyObject *filename_bytes;
+ if (filename_obj != Py_None) {
+ if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
+ return NULL;
+ errno = rl_read_init_file(PyBytes_AS_STRING(filename_bytes));
+ Py_DECREF(filename_bytes);
+ } else
+ errno = rl_read_init_file(NULL);
+ if (errno)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ disable_bracketed_paste();
+ Py_RETURN_NONE;
+}
+
+/* Exported function to load a readline history file */
+
+/*[clinic input]
+readline.read_history_file
+
+ filename as filename_obj: object = None
+ /
+
+Load a readline history file.
+
+The default filename is ~/.history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_read_history_file_impl(PyObject *module, PyObject *filename_obj)
+/*[clinic end generated code: output=66a951836fb54fbb input=3d29d755b7e6932e]*/
+{
+ PyObject *filename_bytes;
+ if (filename_obj != Py_None) {
+ if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
+ return NULL;
+ errno = read_history(PyBytes_AS_STRING(filename_bytes));
+ Py_DECREF(filename_bytes);
+ } else
+ errno = read_history(NULL);
+ if (errno)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ Py_RETURN_NONE;
+}
+
+static int _history_length = -1; /* do not truncate history by default */
+
+/* Exported function to save a readline history file */
+
+/*[clinic input]
+readline.write_history_file
+
+ filename as filename_obj: object = None
+ /
+
+Save a readline history file.
+
+The default filename is ~/.history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_write_history_file_impl(PyObject *module, PyObject *filename_obj)
+/*[clinic end generated code: output=fbcad13d8ef59ae6 input=28a8e062fe363703]*/
+{
+ PyObject *filename_bytes;
+ const char *filename;
+ int err;
+ if (filename_obj != Py_None) {
+ if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
+ return NULL;
+ filename = PyBytes_AS_STRING(filename_bytes);
+ } else {
+ filename_bytes = NULL;
+ filename = NULL;
+ }
+ errno = err = write_history(filename);
+ if (!err && _history_length >= 0)
+ history_truncate_file(filename, _history_length);
+ Py_XDECREF(filename_bytes);
+ errno = err;
+ if (errno)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ Py_RETURN_NONE;
+}
+
+#ifdef HAVE_RL_APPEND_HISTORY
+/* Exported function to save part of a readline history file */
+
+/*[clinic input]
+readline.append_history_file
+
+ nelements: int
+ filename as filename_obj: object = None
+ /
+
+Append the last nelements items of the history list to file.
+
+The default filename is ~/.history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_append_history_file_impl(PyObject *module, int nelements,
+ PyObject *filename_obj)
+/*[clinic end generated code: output=5df06fc9da56e4e4 input=784b774db3a4b7c5]*/
+{
+ PyObject *filename_bytes;
+ const char *filename;
+ int err;
+ if (filename_obj != Py_None) {
+ if (!PyUnicode_FSConverter(filename_obj, &filename_bytes))
+ return NULL;
+ filename = PyBytes_AS_STRING(filename_bytes);
+ } else {
+ filename_bytes = NULL;
+ filename = NULL;
+ }
+ errno = err = append_history(
+ nelements - libedit_append_replace_history_offset, filename);
+ if (!err && _history_length >= 0)
+ history_truncate_file(filename, _history_length);
+ Py_XDECREF(filename_bytes);
+ errno = err;
+ if (errno)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ Py_RETURN_NONE;
+}
+#endif
+
+
+/* Set history length */
+
+/*[clinic input]
+readline.set_history_length
+
+ length: int
+ /
+
+Set the maximal number of lines which will be written to the history file.
+
+A negative length is used to inhibit history truncation.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_history_length_impl(PyObject *module, int length)
+/*[clinic end generated code: output=e161a53e45987dc7 input=b8901bf16488b760]*/
+{
+ _history_length = length;
+ Py_RETURN_NONE;
+}
+
+/* Get history length */
+
+/*[clinic input]
+readline.get_history_length
+
+Return the maximum number of lines that will be written to the history file.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_history_length_impl(PyObject *module)
+/*[clinic end generated code: output=83a2eeae35b6d2b9 input=5dce2eeba4327817]*/
+{
+ return PyLong_FromLong(_history_length);
+}
+
+/* Generic hook function setter */
+
+static PyObject *
+set_hook(const char *funcname, PyObject **hook_var, PyObject *function)
+{
+ if (function == Py_None) {
+ Py_CLEAR(*hook_var);
+ }
+ else if (PyCallable_Check(function)) {
+ Py_INCREF(function);
+ Py_XSETREF(*hook_var, function);
+ }
+ else {
+ PyErr_Format(PyExc_TypeError,
+ "set_%.50s(func): argument not callable",
+ funcname);
+ return NULL;
+ }
+ Py_RETURN_NONE;
+}
+
+/*[clinic input]
+readline.set_completion_display_matches_hook
+
+ function: object = None
+ /
+
+Set or remove the completion display function.
+
+The function is called as
+ function(substitution, [matches], longest_match_length)
+once each time matches need to be displayed.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_completion_display_matches_hook_impl(PyObject *module,
+ PyObject *function)
+/*[clinic end generated code: output=516e5cb8db75a328 input=4f0bfd5ab0179a26]*/
+{
+ PyObject *result = set_hook("completion_display_matches_hook",
+ &readlinestate_global->completion_display_matches_hook,
+ function);
+#ifdef HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK
+ /* We cannot set this hook globally, since it replaces the
+ default completion display. */
+ rl_completion_display_matches_hook =
+ readlinestate_global->completion_display_matches_hook ?
+#if defined(_RL_FUNCTION_TYPEDEF)
+ (rl_compdisp_func_t *)on_completion_display_matches_hook : 0;
+#else
+ (VFunction *)on_completion_display_matches_hook : 0;
+#endif
+#endif
+ return result;
+
+}
+
+/*[clinic input]
+readline.set_startup_hook
+
+ function: object = None
+ /
+
+Set or remove the function invoked by the rl_startup_hook callback.
+
+The function is called with no arguments just
+before readline prints the first prompt.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_startup_hook_impl(PyObject *module, PyObject *function)
+/*[clinic end generated code: output=02cd0e0c4fa082ad input=7783b4334b26d16d]*/
+{
+ return set_hook("startup_hook", &readlinestate_global->startup_hook,
+ function);
+}
+
+#ifdef HAVE_RL_PRE_INPUT_HOOK
+
+/* Set pre-input hook */
+
+/*[clinic input]
+readline.set_pre_input_hook
+
+ function: object = None
+ /
+
+Set or remove the function invoked by the rl_pre_input_hook callback.
+
+The function is called with no arguments after the first prompt
+has been printed and just before readline starts reading input
+characters.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_pre_input_hook_impl(PyObject *module, PyObject *function)
+/*[clinic end generated code: output=fe1a96505096f464 input=4f3eaeaf7ce1fdbe]*/
+{
+ return set_hook("pre_input_hook", &readlinestate_global->pre_input_hook,
+ function);
+}
+#endif
+
+
+/* Get the completion type for the scope of the tab-completion */
+
+/*[clinic input]
+readline.get_completion_type
+
+Get the type of completion being attempted.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_completion_type_impl(PyObject *module)
+/*[clinic end generated code: output=5c54d58a04997c07 input=04b92bc7a82dac91]*/
+{
+ return PyLong_FromLong(rl_completion_type);
+}
+
+/* Get the beginning index for the scope of the tab-completion */
+
+/*[clinic input]
+readline.get_begidx
+
+Get the beginning index of the completion scope.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_begidx_impl(PyObject *module)
+/*[clinic end generated code: output=362616ee8ed1b2b1 input=e083b81c8eb4bac3]*/
+{
+ Py_INCREF(readlinestate_global->begidx);
+ return readlinestate_global->begidx;
+}
+
+/* Get the ending index for the scope of the tab-completion */
+
+/*[clinic input]
+readline.get_endidx
+
+Get the ending index of the completion scope.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_endidx_impl(PyObject *module)
+/*[clinic end generated code: output=7f763350b12d7517 input=d4c7e34a625fd770]*/
+{
+ Py_INCREF(readlinestate_global->endidx);
+ return readlinestate_global->endidx;
+}
+
+/* Set the tab-completion word-delimiters that readline uses */
+
+/*[clinic input]
+readline.set_completer_delims
+
+ string: object
+ /
+
+Set the word delimiters for completion.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_completer_delims(PyObject *module, PyObject *string)
+/*[clinic end generated code: output=4305b266106c4f1f input=ae945337ebd01e20]*/
+{
+ char *break_chars;
+ PyObject *encoded = encode(string);
+ if (encoded == NULL) {
+ return NULL;
+ }
+ /* Keep a reference to the allocated memory in the module state in case
+ some other module modifies rl_completer_word_break_characters
+ (see issue #17289). */
+ break_chars = strdup(PyBytes_AS_STRING(encoded));
+ Py_DECREF(encoded);
+ if (break_chars) {
+ free(completer_word_break_characters);
+ completer_word_break_characters = break_chars;
+ rl_completer_word_break_characters = break_chars;
+ Py_RETURN_NONE;
+ }
+ else
+ return PyErr_NoMemory();
+}
+
+/* _py_free_history_entry: Utility function to free a history entry. */
+
+#if defined(RL_READLINE_VERSION) && RL_READLINE_VERSION >= 0x0500
+
+/* Readline version >= 5.0 introduced a timestamp field into the history entry
+ structure; this needs to be freed to avoid a memory leak. This version of
+ readline also introduced the handy 'free_history_entry' function, which
+ takes care of the timestamp. */
+
+static void
+_py_free_history_entry(HIST_ENTRY *entry)
+{
+ histdata_t data = free_history_entry(entry);
+ free(data);
+}
+
+#else
+
+/* No free_history_entry function; free everything manually. */
+
+static void
+_py_free_history_entry(HIST_ENTRY *entry)
+{
+ if (entry->line)
+ free((void *)entry->line);
+ if (entry->data)
+ free(entry->data);
+ free(entry);
+}
+
+#endif
+
+/*[clinic input]
+readline.remove_history_item
+
+ pos as entry_number: int
+ /
+
+Remove history item given by its zero-based position.
+[clinic start generated code]*/
+
+static PyObject *
+readline_remove_history_item_impl(PyObject *module, int entry_number)
+/*[clinic end generated code: output=ab114f029208c7e8 input=f248beb720ff1838]*/
+{
+ HIST_ENTRY *entry;
+
+ if (entry_number < 0) {
+ PyErr_SetString(PyExc_ValueError,
+ "History index cannot be negative");
+ return NULL;
+ }
+ entry = remove_history(entry_number);
+ if (!entry) {
+ PyErr_Format(PyExc_ValueError,
+ "No history item at position %d",
+ entry_number);
+ return NULL;
+ }
+ /* free memory allocated for the history entry */
+ _py_free_history_entry(entry);
+ Py_RETURN_NONE;
+}
+
+/*[clinic input]
+readline.replace_history_item
+
+ pos as entry_number: int
+ line: unicode
+ /
+
+Replaces history item given by its position with contents of line.
+
+pos is zero-based.
+[clinic start generated code]*/
+
+static PyObject *
+readline_replace_history_item_impl(PyObject *module, int entry_number,
+ PyObject *line)
+/*[clinic end generated code: output=f8cec2770ca125eb input=368bb66fe5ee5222]*/
+{
+ PyObject *encoded;
+ HIST_ENTRY *old_entry;
+
+ if (entry_number < 0) {
+ PyErr_SetString(PyExc_ValueError,
+ "History index cannot be negative");
+ return NULL;
+ }
+ encoded = encode(line);
+ if (encoded == NULL) {
+ return NULL;
+ }
+ old_entry = replace_history_entry(
+ entry_number + libedit_append_replace_history_offset,
+ PyBytes_AS_STRING(encoded), (void *)NULL);
+ Py_DECREF(encoded);
+ if (!old_entry) {
+ PyErr_Format(PyExc_ValueError,
+ "No history item at position %d",
+ entry_number);
+ return NULL;
+ }
+ /* free memory allocated for the old history entry */
+ _py_free_history_entry(old_entry);
+ Py_RETURN_NONE;
+}
+
+/* Add a line to the history buffer */
+
+/*[clinic input]
+readline.add_history
+
+ string: object
+ /
+
+Add an item to the history buffer.
+[clinic start generated code]*/
+
+static PyObject *
+readline_add_history(PyObject *module, PyObject *string)
+/*[clinic end generated code: output=b107b7e8106e803d input=e57c1cf6bc68d7e3]*/
+{
+ PyObject *encoded = encode(string);
+ if (encoded == NULL) {
+ return NULL;
+ }
+ add_history(PyBytes_AS_STRING(encoded));
+ Py_DECREF(encoded);
+ Py_RETURN_NONE;
+}
+
+static int should_auto_add_history = 1;
+
+/* Enable or disable automatic history */
+
+/*[clinic input]
+readline.set_auto_history
+
+ enabled as _should_auto_add_history: bool
+ /
+
+Enables or disables automatic history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_auto_history_impl(PyObject *module,
+ int _should_auto_add_history)
+/*[clinic end generated code: output=619c6968246fd82b input=3d413073a1a03355]*/
+{
+ should_auto_add_history = _should_auto_add_history;
+ Py_RETURN_NONE;
+}
+
+
+/* Get the tab-completion word-delimiters that readline uses */
+
+/*[clinic input]
+readline.get_completer_delims
+
+Get the word delimiters for completion.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_completer_delims_impl(PyObject *module)
+/*[clinic end generated code: output=6b060280fa68ef43 input=e36eb14fb8a1f08a]*/
+{
+ return decode(rl_completer_word_break_characters);
+}
+
+/* Set the completer function */
+
+/*[clinic input]
+readline.set_completer
+
+ function: object = None
+ /
+
+Set or remove the completer function.
+
+The function is called as function(text, state),
+for state in 0, 1, 2, ..., until it returns a non-string.
+It should return the next possible completion starting with 'text'.
+[clinic start generated code]*/
+
+static PyObject *
+readline_set_completer_impl(PyObject *module, PyObject *function)
+/*[clinic end generated code: output=171a2a60f81d3204 input=51e81e13118eb877]*/
+{
+ return set_hook("completer", &readlinestate_global->completer, function);
+}
+
+/*[clinic input]
+readline.get_completer
+
+Get the current completer function.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_completer_impl(PyObject *module)
+/*[clinic end generated code: output=6e6bbd8226d14475 input=6457522e56d70d13]*/
+{
+ if (readlinestate_global->completer == NULL) {
+ Py_RETURN_NONE;
+ }
+ Py_INCREF(readlinestate_global->completer);
+ return readlinestate_global->completer;
+}
+
+/* Private function to get current length of history. XXX It may be
+ * possible to replace this with a direct use of history_length instead,
+ * but it's not clear whether BSD's libedit keeps history_length up to date.
+ * See issue #8065.*/
+
+static int
+_py_get_history_length(void)
+{
+ HISTORY_STATE *hist_st = history_get_history_state();
+ int length = hist_st->length;
+ /* the history docs don't say so, but the address of hist_st changes each
+ time history_get_history_state is called which makes me think it's
+ freshly malloc'd memory... on the other hand, the address of the last
+ line stays the same as long as history isn't extended, so it appears to
+ be malloc'd but managed by the history package... */
+ free(hist_st);
+ return length;
+}
+
+/* Exported function to get any element of history */
+
+/*[clinic input]
+readline.get_history_item
+
+ index as idx: int
+ /
+
+Return the current contents of history item at one-based index.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_history_item_impl(PyObject *module, int idx)
+/*[clinic end generated code: output=83d3e53ea5f34b3d input=8adf5c80e6c7ff2b]*/
+{
+ HIST_ENTRY *hist_ent;
+
+ if (using_libedit_emulation) {
+ /* Older versions of libedit's readline emulation
+ * use 0-based indexes, while readline and newer
+ * versions of libedit use 1-based indexes.
+ */
+ int length = _py_get_history_length();
+
+ idx = idx - 1 + libedit_history_start;
+
+ /*
+ * Apple's readline emulation crashes when
+ * the index is out of range, therefore
+ * test for that and fail gracefully.
+ */
+ if (idx < (0 + libedit_history_start)
+ || idx >= (length + libedit_history_start)) {
+ Py_RETURN_NONE;
+ }
+ }
+ if ((hist_ent = history_get(idx)))
+ return decode(hist_ent->line);
+ else {
+ Py_RETURN_NONE;
+ }
+}
+
+/* Exported function to get current length of history */
+
+/*[clinic input]
+readline.get_current_history_length
+
+Return the current (not the maximum) length of history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_current_history_length_impl(PyObject *module)
+/*[clinic end generated code: output=436b294f12ba1e3f input=9cb3f431a68d071f]*/
+{
+ return PyLong_FromLong((long)_py_get_history_length());
+}
+
+/* Exported function to read the current line buffer */
+
+/*[clinic input]
+readline.get_line_buffer
+
+Return the current contents of the line buffer.
+[clinic start generated code]*/
+
+static PyObject *
+readline_get_line_buffer_impl(PyObject *module)
+/*[clinic end generated code: output=d22f9025ecad80e4 input=5f5fbc0d12c69412]*/
+{
+ return decode(rl_line_buffer);
+}
+
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
+
+/* Exported function to clear the current history */
+
+/*[clinic input]
+readline.clear_history
+
+Clear the current readline history.
+[clinic start generated code]*/
+
+static PyObject *
+readline_clear_history_impl(PyObject *module)
+/*[clinic end generated code: output=1f2dbb0dfa5d5ebb input=208962c4393f5d16]*/
+{
+ clear_history();
+ Py_RETURN_NONE;
+}
+#endif
+
+
+/* Exported function to insert text into the line buffer */
+
+/*[clinic input]
+readline.insert_text
+
+ string: object
+ /
+
+Insert text into the line buffer at the cursor position.
+[clinic start generated code]*/
+
+static PyObject *
+readline_insert_text(PyObject *module, PyObject *string)
+/*[clinic end generated code: output=23d792821d320c19 input=bc96c3c848d5ccb5]*/
+{
+ PyObject *encoded = encode(string);
+ if (encoded == NULL) {
+ return NULL;
+ }
+ rl_insert_text(PyBytes_AS_STRING(encoded));
+ Py_DECREF(encoded);
+ Py_RETURN_NONE;
+}
+
+/* Redisplay the line buffer */
+
+/*[clinic input]
+readline.redisplay
+
+Change what's displayed on the screen to reflect contents of the line buffer.
+[clinic start generated code]*/
+
+static PyObject *
+readline_redisplay_impl(PyObject *module)
+/*[clinic end generated code: output=a8b9725827c3c34b input=b485151058d75edc]*/
+{
+ rl_redisplay();
+ Py_RETURN_NONE;
+}
+
+#include "clinic/readline.c.h"
+
+/* Table of functions exported by the module */
+
+static struct PyMethodDef readline_methods[] =
+{
+ READLINE_PARSE_AND_BIND_METHODDEF
+ READLINE_GET_LINE_BUFFER_METHODDEF
+ READLINE_INSERT_TEXT_METHODDEF
+ READLINE_REDISPLAY_METHODDEF
+ READLINE_READ_INIT_FILE_METHODDEF
+ READLINE_READ_HISTORY_FILE_METHODDEF
+ READLINE_WRITE_HISTORY_FILE_METHODDEF
+#ifdef HAVE_RL_APPEND_HISTORY
+ READLINE_APPEND_HISTORY_FILE_METHODDEF
+#endif
+ READLINE_GET_HISTORY_ITEM_METHODDEF
+ READLINE_GET_CURRENT_HISTORY_LENGTH_METHODDEF
+ READLINE_SET_HISTORY_LENGTH_METHODDEF
+ READLINE_GET_HISTORY_LENGTH_METHODDEF
+ READLINE_SET_COMPLETER_METHODDEF
+ READLINE_GET_COMPLETER_METHODDEF
+ READLINE_GET_COMPLETION_TYPE_METHODDEF
+ READLINE_GET_BEGIDX_METHODDEF
+ READLINE_GET_ENDIDX_METHODDEF
+ READLINE_SET_COMPLETER_DELIMS_METHODDEF
+ READLINE_SET_AUTO_HISTORY_METHODDEF
+ READLINE_ADD_HISTORY_METHODDEF
+ READLINE_REMOVE_HISTORY_ITEM_METHODDEF
+ READLINE_REPLACE_HISTORY_ITEM_METHODDEF
+ READLINE_GET_COMPLETER_DELIMS_METHODDEF
+ READLINE_SET_COMPLETION_DISPLAY_MATCHES_HOOK_METHODDEF
+ READLINE_SET_STARTUP_HOOK_METHODDEF
+#ifdef HAVE_RL_PRE_INPUT_HOOK
+ READLINE_SET_PRE_INPUT_HOOK_METHODDEF
+#endif
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
+ READLINE_CLEAR_HISTORY_METHODDEF
+#endif
+ {0, 0}
+};
+
+
+/* C function to call the Python hooks. */
+
+static int
+on_hook(PyObject *func)
+{
+ int result = 0;
+ if (func != NULL) {
+ PyObject *r;
+ r = PyObject_CallNoArgs(func);
+ if (r == NULL)
+ goto error;
+ if (r == Py_None)
+ result = 0;
+ else {
+ result = _PyLong_AsInt(r);
+ if (result == -1 && PyErr_Occurred())
+ goto error;
+ }
+ Py_DECREF(r);
+ goto done;
+ error:
+ PyErr_Clear();
+ Py_XDECREF(r);
+ done:
+ return result;
+ }
+ return result;
+}
+
+static int
+#if defined(_RL_FUNCTION_TYPEDEF)
+on_startup_hook(void)
+#else
+on_startup_hook()
+#endif
+{
+ int r;
+ PyGILState_STATE gilstate = PyGILState_Ensure();
+ r = on_hook(readlinestate_global->startup_hook);
+ PyGILState_Release(gilstate);
+ return r;
+}
+
+#ifdef HAVE_RL_PRE_INPUT_HOOK
+static int
+#if defined(_RL_FUNCTION_TYPEDEF)
+on_pre_input_hook(void)
+#else
+on_pre_input_hook()
+#endif
+{
+ int r;
+ PyGILState_STATE gilstate = PyGILState_Ensure();
+ r = on_hook(readlinestate_global->pre_input_hook);
+ PyGILState_Release(gilstate);
+ return r;
+}
+#endif
+
+
+/* C function to call the Python completion_display_matches */
+
+#ifdef HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK
+static void
+on_completion_display_matches_hook(char **matches,
+ int num_matches, int max_length)
+{
+ int i;
+ PyObject *sub, *m=NULL, *s=NULL, *r=NULL;
+ PyGILState_STATE gilstate = PyGILState_Ensure();
+ m = PyList_New(num_matches);
+ if (m == NULL)
+ goto error;
+ for (i = 0; i < num_matches; i++) {
+ s = decode(matches[i+1]);
+ if (s == NULL)
+ goto error;
+ PyList_SET_ITEM(m, i, s);
+ }
+ sub = decode(matches[0]);
+ r = PyObject_CallFunction(readlinestate_global->completion_display_matches_hook,
+ "NNi", sub, m, max_length);
+
+ m=NULL;
+
+ if (r == NULL ||
+ (r != Py_None && PyLong_AsLong(r) == -1 && PyErr_Occurred())) {
+ goto error;
+ }
+ Py_CLEAR(r);
+
+ if (0) {
+ error:
+ PyErr_Clear();
+ Py_XDECREF(m);
+ Py_XDECREF(r);
+ }
+ PyGILState_Release(gilstate);
+}
+
+#endif
+
+#ifdef HAVE_RL_RESIZE_TERMINAL
+static volatile sig_atomic_t sigwinch_received;
+static PyOS_sighandler_t sigwinch_ohandler;
+
+static void
+readline_sigwinch_handler(int signum)
+{
+ sigwinch_received = 1;
+ if (sigwinch_ohandler &&
+ sigwinch_ohandler != SIG_IGN && sigwinch_ohandler != SIG_DFL)
+ sigwinch_ohandler(signum);
+
+#ifndef HAVE_SIGACTION
+ /* If the handler was installed with signal() rather than sigaction(),
+ we need to reinstall it. */
+ PyOS_setsig(SIGWINCH, readline_sigwinch_handler);
+#endif
+}
+#endif
+
+/* C function to call the Python completer. */
+
+static char *
+on_completion(const char *text, int state)
+{
+ char *result = NULL;
+ if (readlinestate_global->completer != NULL) {
+ PyObject *r = NULL, *t;
+ PyGILState_STATE gilstate = PyGILState_Ensure();
+ rl_attempted_completion_over = 1;
+ t = decode(text);
+ r = PyObject_CallFunction(readlinestate_global->completer, "Ni", t, state);
+ if (r == NULL)
+ goto error;
+ if (r == Py_None) {
+ result = NULL;
+ }
+ else {
+ PyObject *encoded = encode(r);
+ if (encoded == NULL)
+ goto error;
+ result = strdup(PyBytes_AS_STRING(encoded));
+ Py_DECREF(encoded);
+ }
+ Py_DECREF(r);
+ goto done;
+ error:
+ PyErr_Clear();
+ Py_XDECREF(r);
+ done:
+ PyGILState_Release(gilstate);
+ return result;
+ }
+ return result;
+}
+
+
+/* A more flexible constructor that saves the "begidx" and "endidx"
+ * before calling the normal completer */
+
+static char **
+flex_complete(const char *text, int start, int end)
+{
+ char **result;
+ char saved;
+ size_t start_size, end_size;
+ wchar_t *s;
+ PyGILState_STATE gilstate = PyGILState_Ensure();
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
+ rl_completion_append_character ='\0';
+#endif
+#ifdef HAVE_RL_COMPLETION_SUPPRESS_APPEND
+ rl_completion_suppress_append = 0;
+#endif
+
+ saved = rl_line_buffer[start];
+ rl_line_buffer[start] = 0;
+ s = Py_DecodeLocale(rl_line_buffer, &start_size);
+ rl_line_buffer[start] = saved;
+ if (s == NULL) {
+ goto done;
+ }
+ PyMem_RawFree(s);
+ saved = rl_line_buffer[end];
+ rl_line_buffer[end] = 0;
+ s = Py_DecodeLocale(rl_line_buffer + start, &end_size);
+ rl_line_buffer[end] = saved;
+ if (s == NULL) {
+ goto done;
+ }
+ PyMem_RawFree(s);
+ start = (int)start_size;
+ end = start + (int)end_size;
+
+done:
+ Py_XDECREF(readlinestate_global->begidx);
+ Py_XDECREF(readlinestate_global->endidx);
+ readlinestate_global->begidx = PyLong_FromLong((long) start);
+ readlinestate_global->endidx = PyLong_FromLong((long) end);
+ result = completion_matches((char *)text, *on_completion);
+ PyGILState_Release(gilstate);
+ return result;
+}
+
+
+/* Helper to initialize GNU readline properly.
+ Return -1 on memory allocation failure, return 0 on success. */
+static int
+setup_readline(readlinestate *mod_state)
+{
+#ifdef SAVE_LOCALE
+ char *saved_locale = strdup(setlocale(LC_CTYPE, NULL));
+ if (!saved_locale) {
+ return -1;
+ }
+#endif
+
+ /* The name must be defined before initialization */
+ rl_readline_name = "python";
+
+ /* the libedit readline emulation resets key bindings etc
+ * when calling rl_initialize. So call it upfront
+ */
+ if (using_libedit_emulation)
+ rl_initialize();
+
+ /* Detect if libedit's readline emulation uses 0-based
+ * indexing or 1-based indexing.
+ */
+ add_history("1");
+ if (history_get(1) == NULL) {
+ libedit_history_start = 0;
+ } else {
+ libedit_history_start = 1;
+ }
+ /* Some libedit implementations use 1 based indexing on
+ * replace_history_entry where libreadline uses 0 based.
+ * The API our module presents is supposed to be 0 based.
+ * It's a mad mad mad mad world.
+ */
+ {
+ add_history("2");
+ HIST_ENTRY *old_entry = replace_history_entry(1, "X", NULL);
+ _py_free_history_entry(old_entry);
+ HIST_ENTRY *item = history_get(libedit_history_start);
+ if (item && item->line && strcmp(item->line, "X")) {
+ libedit_append_replace_history_offset = 0;
+ } else {
+ libedit_append_replace_history_offset = 1;
+ }
+ }
+ clear_history();
+
+ using_history();
+
+ /* Force rebind of TAB to insert-tab */
+ rl_bind_key('\t', rl_insert);
+ /* Bind both ESC-TAB and ESC-ESC to the completion function */
+ rl_bind_key_in_map ('\t', rl_complete, emacs_meta_keymap);
+ rl_bind_key_in_map ('\033', rl_complete, emacs_meta_keymap);
+#ifdef HAVE_RL_RESIZE_TERMINAL
+ /* Set up signal handler for window resize */
+ sigwinch_ohandler = PyOS_setsig(SIGWINCH, readline_sigwinch_handler);
+#endif
+ /* Set our hook functions */
+ rl_startup_hook = (rl_hook_func_t *)on_startup_hook;
+#ifdef HAVE_RL_PRE_INPUT_HOOK
+ rl_pre_input_hook = (rl_hook_func_t *)on_pre_input_hook;
+#endif
+ /* Set our completion function */
+ rl_attempted_completion_function = (rl_completion_func_t *)flex_complete;
+ /* Set Python word break characters */
+ completer_word_break_characters =
+ rl_completer_word_break_characters =
+ strdup(" \t\n`~!@#$%^&*()-=+[{]}\\|;:'\",<>/?");
+ /* All nonalphanums except '.' */
+
+ mod_state->begidx = PyLong_FromLong(0L);
+ mod_state->endidx = PyLong_FromLong(0L);
+
+ if (!using_libedit_emulation)
+ {
+ if (!isatty(STDOUT_FILENO)) {
+ /* Issue #19884: stdout is not a terminal. Disable meta modifier
+ keys to not write the ANSI sequence "\033[1034h" into stdout. On
+ terminals supporting 8 bit characters like TERM=xterm-256color
+ (which is now the default Fedora since Fedora 18), the meta key is
+ used to enable support of 8 bit characters (ANSI sequence
+ "\033[1034h").
+
+ With libedit, this call makes readline() crash. */
+ rl_variable_bind ("enable-meta-key", "off");
+ }
+ }
+
+ /* Initialize (allows .inputrc to override)
+ *
+ * XXX: A bug in the readline-2.2 library causes a memory leak
+ * inside this function. Nothing we can do about it.
+ */
+ if (using_libedit_emulation)
+ rl_read_init_file(NULL);
+ else
+ rl_initialize();
+
+ disable_bracketed_paste();
+
+ RESTORE_LOCALE(saved_locale)
+ return 0;
+}
+
+/* Wrapper around GNU readline that handles signals differently. */
+
+static char *completed_input_string;
+static void
+rlhandler(char *text)
+{
+ completed_input_string = text;
+ rl_callback_handler_remove();
+}
+
+static char *
+readline_until_enter_or_signal(const char *prompt, int *signal)
+{
+ char * not_done_reading = "";
+ fd_set selectset;
+
+ *signal = 0;
+#ifdef HAVE_RL_CATCH_SIGNAL
+ rl_catch_signals = 0;
+#endif
+
+ rl_callback_handler_install (prompt, rlhandler);
+ FD_ZERO(&selectset);
+
+ completed_input_string = not_done_reading;
+
+ while (completed_input_string == not_done_reading) {
+ int has_input = 0, err = 0;
+
+ while (!has_input)
+ { struct timeval timeout = {0, 100000}; /* 0.1 seconds */
+
+ /* [Bug #1552726] Only limit the pause if an input hook has been
+ defined. */
+ struct timeval *timeoutp = NULL;
+ if (PyOS_InputHook)
+ timeoutp = &timeout;
+#ifdef HAVE_RL_RESIZE_TERMINAL
+ /* Update readline's view of the window size after SIGWINCH */
+ if (sigwinch_received) {
+ sigwinch_received = 0;
+ rl_resize_terminal();
+ }
+#endif
+ FD_SET(fileno(rl_instream), &selectset);
+ /* select resets selectset if no input was available */
+ has_input = select(fileno(rl_instream) + 1, &selectset,
+ NULL, NULL, timeoutp);
+ err = errno;
+ if(PyOS_InputHook) PyOS_InputHook();
+ }
+
+ if (has_input > 0) {
+ rl_callback_read_char();
+ }
+ else if (err == EINTR) {
+ int s;
+ PyEval_RestoreThread(_PyOS_ReadlineTState);
+ s = PyErr_CheckSignals();
+ PyEval_SaveThread();
+ if (s < 0) {
+ rl_free_line_state();
+#if defined(RL_READLINE_VERSION) && RL_READLINE_VERSION >= 0x0700
+ rl_callback_sigcleanup();
+#endif
+ rl_cleanup_after_signal();
+ rl_callback_handler_remove();
+ *signal = 1;
+ completed_input_string = NULL;
+ }
+ }
+ }
+
+ return completed_input_string;
+}
+
+
+static char *
+call_readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
+{
+ size_t n;
+ char *p;
+ int signal;
+
+#ifdef SAVE_LOCALE
+ char *saved_locale = strdup(setlocale(LC_CTYPE, NULL));
+ if (!saved_locale)
+ Py_FatalError("not enough memory to save locale");
+ _Py_SetLocaleFromEnv(LC_CTYPE);
+#endif
+
+ if (sys_stdin != rl_instream || sys_stdout != rl_outstream) {
+ rl_instream = sys_stdin;
+ rl_outstream = sys_stdout;
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
+ rl_prep_terminal (1);
+#endif
+ }
+
+ p = readline_until_enter_or_signal(prompt, &signal);
+
+ /* we got an interrupt signal */
+ if (signal) {
+ RESTORE_LOCALE(saved_locale)
+ return NULL;
+ }
+
+ /* We got an EOF, return an empty string. */
+ if (p == NULL) {
+ p = PyMem_RawMalloc(1);
+ if (p != NULL)
+ *p = '\0';
+ RESTORE_LOCALE(saved_locale)
+ return p;
+ }
+
+ /* we have a valid line */
+ n = strlen(p);
+ if (should_auto_add_history && n > 0) {
+ const char *line;
+ int length = _py_get_history_length();
+ if (length > 0) {
+ HIST_ENTRY *hist_ent;
+ if (using_libedit_emulation) {
+ /* handle older 0-based or newer 1-based indexing */
+ hist_ent = history_get(length + libedit_history_start - 1);
+ } else
+ hist_ent = history_get(length);
+ line = hist_ent ? hist_ent->line : "";
+ } else
+ line = "";
+ if (strcmp(p, line))
+ add_history(p);
+ }
+ /* Copy the malloc'ed buffer into a PyMem_Malloc'ed one and
+ release the original. */
+ char *q = p;
+ p = PyMem_RawMalloc(n+2);
+ if (p != NULL) {
+ memcpy(p, q, n);
+ p[n] = '\n';
+ p[n+1] = '\0';
+ }
+ free(q);
+ RESTORE_LOCALE(saved_locale)
+ return p;
+}
+
+
+/* Initialize the module */
+
+PyDoc_STRVAR(doc_module,
+"Importing this module enables command line editing using GNU readline.");
+
+PyDoc_STRVAR(doc_module_le,
+"Importing this module enables command line editing using libedit readline.");
+
+static struct PyModuleDef readlinemodule = {
+ PyModuleDef_HEAD_INIT,
+ "readline",
+ doc_module,
+ sizeof(readlinestate),
+ readline_methods,
+ NULL,
+ readline_traverse,
+ readline_clear,
+ readline_free
+};
+
+
+PyMODINIT_FUNC
+PyInit_readline(void)
+{
+ PyObject *m;
+ readlinestate *mod_state;
+
+ if (strncmp(rl_library_version, libedit_version_tag, strlen(libedit_version_tag)) == 0) {
+ using_libedit_emulation = 1;
+ }
+
+ if (using_libedit_emulation)
+ readlinemodule.m_doc = doc_module_le;
+
+
+ m = PyModule_Create(&readlinemodule);
+
+ if (m == NULL)
+ return NULL;
+
+ if (PyModule_AddIntConstant(m, "_READLINE_VERSION",
+ RL_READLINE_VERSION) < 0) {
+ goto error;
+ }
+ if (PyModule_AddIntConstant(m, "_READLINE_RUNTIME_VERSION",
+ rl_readline_version) < 0) {
+ goto error;
+ }
+ if (PyModule_AddStringConstant(m, "_READLINE_LIBRARY_VERSION",
+ rl_library_version) < 0)
+ {
+ goto error;
+ }
+
+ mod_state = (readlinestate *) PyModule_GetState(m);
+ PyOS_ReadlineFunctionPointer = call_readline;
+ if (setup_readline(mod_state) < 0) {
+ PyErr_NoMemory();
+ goto error;
+ }
+
+ return m;
+
+error:
+ Py_DECREF(m);
+ return NULL;
+}
Index: Modules
===================================================================
--- Modules (nonexistent)
+++ Modules (revision 5)
Property changes on: Modules
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,73 ##
+
+# install dir
+dist
+
+# Target build dirs
+.a1x-newlib
+.a2x-newlib
+.at91sam7s-newlib
+
+.build-machine
+
+.a1x-glibc
+.a2x-glibc
+.h3-glibc
+.h5-glibc
+.i586-glibc
+.i686-glibc
+.imx6-glibc
+.jz47xx-glibc
+.makefile
+.am335x-glibc
+.omap543x-glibc
+.p5600-glibc
+.power8-glibc
+.power8le-glibc
+.power9-glibc
+.power9le-glibc
+.m1000-glibc
+.riscv64-glibc
+.rk328x-glibc
+.rk33xx-glibc
+.rk339x-glibc
+.s8xx-glibc
+.s9xx-glibc
+.x86_64-glibc
+
+# Hidden files (each file)
+.makefile
+.dist
+.rootfs
+
+# src & hw requires
+.src_requires
+.src_requires_depend
+.requires
+.requires_depend
+
+# Tarballs
+*.gz
+*.bz2
+*.lz
+*.xz
+*.tgz
+*.txz
+
+# Signatures
+*.asc
+*.sig
+*.sign
+*.sha1sum
+
+# Patches
+*.patch
+
+# Descriptions
+*.dsc
+*.txt
+
+# Default linux config files
+*.defconfig
+
+# backup copies
+*~
Index: .
===================================================================
--- . (nonexistent)
+++ . (revision 5)
Property changes on: .
___________________________________________________________________
Added: svn:ignore
## -0,0 +1,73 ##
+
+# install dir
+dist
+
+# Target build dirs
+.a1x-newlib
+.a2x-newlib
+.at91sam7s-newlib
+
+.build-machine
+
+.a1x-glibc
+.a2x-glibc
+.h3-glibc
+.h5-glibc
+.i586-glibc
+.i686-glibc
+.imx6-glibc
+.jz47xx-glibc
+.makefile
+.am335x-glibc
+.omap543x-glibc
+.p5600-glibc
+.power8-glibc
+.power8le-glibc
+.power9-glibc
+.power9le-glibc
+.m1000-glibc
+.riscv64-glibc
+.rk328x-glibc
+.rk33xx-glibc
+.rk339x-glibc
+.s8xx-glibc
+.s9xx-glibc
+.x86_64-glibc
+
+# Hidden files (each file)
+.makefile
+.dist
+.rootfs
+
+# src & hw requires
+.src_requires
+.src_requires_depend
+.requires
+.requires_depend
+
+# Tarballs
+*.gz
+*.bz2
+*.lz
+*.xz
+*.tgz
+*.txz
+
+# Signatures
+*.asc
+*.sig
+*.sign
+*.sha1sum
+
+# Patches
+*.patch
+
+# Descriptions
+*.dsc
+*.txt
+
+# Default linux config files
+*.defconfig
+
+# backup copies
+*~
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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