X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/2d89215071c9b991d3db383504a7f23c74650ff1..534c20b22f89ffbe99a4d6a1035b74eacc544ee5:/src/callproc.c diff --git a/src/callproc.c b/src/callproc.c index e852d3de76..1a3ff6fcca 100644 --- a/src/callproc.c +++ b/src/callproc.c @@ -1,5 +1,6 @@ /* Synchronous subprocess invocation for GNU Emacs. - Copyright (C) 1985, 86,87,88,93,94,95, 1999 Free Software Foundation, Inc. + Copyright (C) 1985,86,87,88,93,94,95,99, 2000, 2001 + Free Software Foundation, Inc. This file is part of GNU Emacs. @@ -24,7 +25,9 @@ Boston, MA 02111-1307, USA. */ #include #include +#ifndef USE_CRT_DLL extern int errno; +#endif /* Define SIGCHLD as an alias for SIGCLD. */ @@ -88,19 +91,21 @@ extern int errno; #ifdef VMS extern noshare char **environ; #else +#ifndef USE_CRT_DLL extern char **environ; #endif +#endif #ifdef HAVE_SETPGID #if !defined (USG) || defined (BSD_PGRPS) +#undef setpgrp #define setpgrp setpgid #endif #endif -#define max(a, b) ((a) > (b) ? (a) : (b)) - -Lisp_Object Vexec_path, Vexec_directory, Vdata_directory, Vdoc_directory; -Lisp_Object Vconfigure_info_directory; +Lisp_Object Vexec_path, Vexec_directory, Vexec_suffixes; +Lisp_Object Vdata_directory, Vdoc_directory; +Lisp_Object Vconfigure_info_directory, Vshared_game_score_directory; Lisp_Object Vtemp_file_name_pattern; Lisp_Object Vshell_file_name; @@ -149,14 +154,14 @@ Lisp_Object call_process_cleanup (fdpid) Lisp_Object fdpid; { -#if defined (MSDOS) || defined (macintosh) +#if defined (MSDOS) || defined (MAC_OS8) /* for MSDOS fdpid is really (fd . tempfile) */ register Lisp_Object file; file = Fcdr (fdpid); emacs_close (XFASTINT (Fcar (fdpid))); if (strcmp (XSTRING (file)-> data, NULL_DEVICE) != 0) unlink (XSTRING (file)->data); -#else /* not MSDOS and not macintosh */ +#else /* not MSDOS and not MAC_OS8 */ register int pid = XFASTINT (Fcdr (fdpid)); if (call_process_exited) @@ -184,25 +189,27 @@ call_process_cleanup (fdpid) } DEFUN ("call-process", Fcall_process, Scall_process, 1, MANY, 0, - "Call PROGRAM synchronously in separate process.\n\ -The remaining arguments are optional.\n\ -The program's input comes from file INFILE (nil means `/dev/null').\n\ -Insert output in BUFFER before point; t means current buffer;\n\ - nil for BUFFER means discard it; 0 means discard and don't wait.\n\ -BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ -REAL-BUFFER says what to do with standard output, as above,\n\ -while STDERR-FILE says what to do with standard error in the child.\n\ -STDERR-FILE may be nil (discard standard error output),\n\ -t (mix it with ordinary output), or a file name string.\n\ -\n\ -Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ -Remaining arguments are strings passed as command arguments to PROGRAM.\n\ -\n\ -If BUFFER is 0, `call-process' returns immediately with value nil.\n\ -Otherwise it waits for PROGRAM to terminate\n\ -and returns a numeric exit status or a signal description string.\n\ -If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") - (nargs, args) + doc: /* Call PROGRAM synchronously in separate process. +The remaining arguments are optional. +The program's input comes from file INFILE (nil means `/dev/null'). +Insert output in BUFFER before point; t means current buffer; + nil for BUFFER means discard it; 0 means discard and don't wait. +BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, +REAL-BUFFER says what to do with standard output, as above, +while STDERR-FILE says what to do with standard error in the child. +STDERR-FILE may be nil (discard standard error output), +t (mix it with ordinary output), or a file name string. + +Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted. +Remaining arguments are strings passed as command arguments to PROGRAM. + +If BUFFER is 0, `call-process' returns immediately with value nil. +Otherwise it waits for PROGRAM to terminate +and returns a numeric exit status or a signal description string. +If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. + +usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS) */) + (nargs, args) int nargs; register Lisp_Object *args; { @@ -225,7 +232,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") char *outf, *tempfile; int outfilefd; #endif -#ifdef macintosh +#ifdef MAC_OS8 char *tempfile; int outfilefd; #endif @@ -240,7 +247,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") /* Qt denotes that Ffind_operation_coding_system is not yet called. */ coding_systems = Qt; - CHECK_STRING (args[0], 0); + CHECK_STRING (args[0]); error_file = Qt; @@ -262,7 +269,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") int must_encode = 0; for (i = 4; i < nargs; i++) - CHECK_STRING (args[i], i); + CHECK_STRING (args[i]); for (i = 4; i < nargs; i++) if (STRING_MULTIBYTE (args[i])) @@ -292,7 +299,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (nargs >= 2 && ! NILP (args[1])) { infile = Fexpand_file_name (args[1], current_buffer->directory); - CHECK_STRING (infile, 1); + CHECK_STRING (infile); } else infile = build_string (NULL_DEVICE); @@ -328,8 +335,8 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") buffer = Fget_buffer_create (buffer); /* Mention the buffer name for a better error message. */ if (NILP (buffer)) - CHECK_BUFFER (spec_buffer, 2); - CHECK_BUFFER (buffer, 2); + CHECK_BUFFER (spec_buffer); + CHECK_BUFFER (buffer); } } else @@ -374,7 +381,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") struct gcpro gcpro1; GCPRO1 (current_dir); - openp (Vexec_path, args[0], EXEC_SUFFIXES, &path, 1); + openp (Vexec_path, args[0], Vexec_suffixes, &path, make_number (X_OK)); UNGCPRO; } if (NILP (path)) @@ -433,7 +440,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") fd[1] = outfilefd; #endif /* MSDOS */ -#ifdef macintosh +#ifdef MAC_OS8 /* Since we don't have pipes on the Mac, create a temporary file to hold the output of the subprocess. */ tempfile = (char *) alloca (STRING_BYTES (XSTRING (Vtemp_file_name_pattern)) + 1); @@ -451,15 +458,20 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") } fd[0] = filefd; fd[1] = outfilefd; -#endif /* macintosh */ +#endif /* MAC_OS8 */ if (INTEGERP (buffer)) fd[1] = emacs_open (NULL_DEVICE, O_WRONLY, 0), fd[0] = -1; else { #ifndef MSDOS -#ifndef macintosh - pipe (fd); +#ifndef MAC_OS8 + errno = 0; + if (pipe (fd) == -1) + { + emacs_close (filefd); + report_file_error ("Creating process pipe", Qnil); + } #endif #endif #if 0 @@ -519,7 +531,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") current_dir = ENCODE_FILE (current_dir); -#ifdef macintosh +#ifdef MAC_OS8 { /* Call run_mac_command in sysdep.c here directly instead of doing a child_setup as for MSDOS and other platforms. Note that this @@ -564,7 +576,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") report_file_error ("Cannot re-open temporary file", Qnil); } } -#else /* not macintosh */ +#else /* not MAC_OS8 */ #ifdef MSDOS /* MW, July 1993 */ /* Note that on MSDOS `child_setup' actually returns the child process exit status, not its PID, so we assign it to `synch_process_retcode' @@ -623,7 +635,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (fd_error >= 0) emacs_close (fd_error); #endif /* not MSDOS */ -#endif /* not macintosh */ +#endif /* not MAC_OS8 */ environ = save_environ; @@ -657,14 +669,14 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") /* Enable sending signal if user quits below. */ call_process_exited = 0; -#if defined(MSDOS) || defined(macintosh) +#if defined(MSDOS) || defined(MAC_OS8) /* MSDOS needs different cleanup information. */ record_unwind_protect (call_process_cleanup, Fcons (make_number (fd[0]), build_string (tempfile))); #else record_unwind_protect (call_process_cleanup, Fcons (make_number (fd[0]), make_number (pid))); -#endif /* not MSDOS and not macintosh */ +#endif /* not MSDOS and not MAC_OS8 */ if (BUFFERP (buffer)) @@ -726,6 +738,8 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") int carryover = 0; int display_on_the_fly = !NILP (display) && INTERACTIVE; struct coding_system saved_coding; + int pt_orig = PT, pt_byte_orig = PT_BYTE; + int inserted; saved_coding = process_coding; if (process_coding.composing != COMPOSITION_DISABLED) @@ -772,10 +786,13 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") repeat_decoding: size = decoding_buffer_size (&process_coding, nread); decoding_buf = (char *) xmalloc (size); + if (process_coding.cmp_data) process_coding.cmp_data->char_offset = PT; + decode_coding (&process_coding, bufptr, decoding_buf, nread, size); + if (display_on_the_fly && saved_coding.type == coding_type_undecided && process_coding.type != coding_type_undecided) @@ -790,10 +807,70 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") carryover = nread; continue; } + if (process_coding.produced > 0) insert_1_both (decoding_buf, process_coding.produced_char, process_coding.produced, 0, 1, 0); xfree (decoding_buf); + + if (process_coding.result == CODING_FINISH_INCONSISTENT_EOL) + { + Lisp_Object eol_type, coding; + + if (process_coding.eol_type == CODING_EOL_CR) + { + /* CRs have been replaced with LFs. Undo + that in the text inserted above. */ + unsigned char *p; + + move_gap_both (PT, PT_BYTE); + + p = BYTE_POS_ADDR (pt_byte_orig); + for (; p < GPT_ADDR; ++p) + if (*p == '\n') + *p = '\r'; + } + else if (process_coding.eol_type == CODING_EOL_CRLF) + { + /* CR LFs have been replaced with LFs. Undo + that by inserting CRs in front of LFs in + the text inserted above. */ + EMACS_INT bytepos, old_pt, old_pt_byte, nCR; + + old_pt = PT; + old_pt_byte = PT_BYTE; + nCR = 0; + + for (bytepos = PT_BYTE - 1; + bytepos >= pt_byte_orig; + --bytepos) + if (FETCH_BYTE (bytepos) == '\n') + { + EMACS_INT charpos = BYTE_TO_CHAR (bytepos); + TEMP_SET_PT_BOTH (charpos, bytepos); + insert_1_both ("\r", 1, 1, 0, 1, 0); + ++nCR; + } + + TEMP_SET_PT_BOTH (old_pt + nCR, old_pt_byte + nCR); + } + + /* Set the coding system symbol to that for + Unix-like EOL. */ + eol_type = Fget (saved_coding.symbol, Qeol_type); + if (VECTORP (eol_type) + && ASIZE (eol_type) == 3 + && SYMBOLP (AREF (eol_type, CODING_EOL_LF))) + coding = AREF (eol_type, CODING_EOL_LF); + else + coding = saved_coding.symbol; + + process_coding.symbol = coding; + process_coding.eol_type = CODING_EOL_LF; + process_coding.mode + &= ~CODING_MODE_INHIBIT_INCONSISTENT_EOL; + } + nread -= process_coding.consumed; carryover = nread; if (carryover > 0) @@ -820,8 +897,12 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") but not past 64k. */ if (bufsize < 64 * 1024 && total_read > 32 * bufsize) { + char *tempptr; bufsize *= 2; - bufptr = (char *) alloca (bufsize); + + tempptr = (char *) alloca (bufsize); + bcopy (bufptr, tempptr, bufsize / 2); + bufptr = tempptr; } if (!NILP (display) && INTERACTIVE) @@ -829,7 +910,7 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") if (first) prepare_menu_bars (); first = 0; - redisplay_preserve_echo_area (); + redisplay_preserve_echo_area (1); } immediate_quit = 1; QUIT; @@ -843,13 +924,26 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") coding_free_composition_data (&process_coding); } - Vlast_coding_system_used = process_coding.symbol; + { + int post_read_count = specpdl_ptr - specpdl; + + record_unwind_protect (save_excursion_restore, save_excursion_save ()); + inserted = PT - pt_orig; + TEMP_SET_PT_BOTH (pt_orig, pt_byte_orig); + if (SYMBOLP (process_coding.post_read_conversion) + && !NILP (Ffboundp (process_coding.post_read_conversion))) + call1 (process_coding.post_read_conversion, make_number (inserted)); - /* If the caller required, let the buffer inherit the - coding-system used to decode the process output. */ - if (inherit_process_coding_system) - call1 (intern ("after-insert-file-set-buffer-file-coding-system"), - make_number (total_read)); + Vlast_coding_system_used = process_coding.symbol; + + /* If the caller required, let the buffer inherit the + coding-system used to decode the process output. */ + if (inherit_process_coding_system) + call1 (intern ("after-insert-file-set-buffer-file-coding-system"), + make_number (total_read)); + + unbind_to (post_read_count, Qnil); + } } /* Wait for it to terminate, unless it already has. */ @@ -879,30 +973,33 @@ delete_temp_file (name) /* Use Fdelete_file (indirectly) because that runs a file name handler. We did that when writing the file, so we should do so when deleting. */ internal_delete_file (name); + return Qnil; } DEFUN ("call-process-region", Fcall_process_region, Scall_process_region, - 3, MANY, 0, - "Send text from START to END to a synchronous process running PROGRAM.\n\ -The remaining arguments are optional.\n\ -Delete the text if fourth arg DELETE is non-nil.\n\ -\n\ -Insert output in BUFFER before point; t means current buffer;\n\ - nil for BUFFER means discard it; 0 means discard and don't wait.\n\ -BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,\n\ -REAL-BUFFER says what to do with standard output, as above,\n\ -while STDERR-FILE says what to do with standard error in the child.\n\ -STDERR-FILE may be nil (discard standard error output),\n\ -t (mix it with ordinary output), or a file name string.\n\ -\n\ -Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.\n\ -Remaining args are passed to PROGRAM at startup as command args.\n\ -\n\ -If BUFFER is nil, `call-process-region' returns immediately with value nil.\n\ -Otherwise it waits for PROGRAM to terminate\n\ -and returns a numeric exit status or a signal description string.\n\ -If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") - (nargs, args) + 3, MANY, 0, + doc: /* Send text from START to END to a synchronous process running PROGRAM. +The remaining arguments are optional. +Delete the text if fourth arg DELETE is non-nil. + +Insert output in BUFFER before point; t means current buffer; + nil for BUFFER means discard it; 0 means discard and don't wait. +BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case, +REAL-BUFFER says what to do with standard output, as above, +while STDERR-FILE says what to do with standard error in the child. +STDERR-FILE may be nil (discard standard error output), +t (mix it with ordinary output), or a file name string. + +Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted. +Remaining args are passed to PROGRAM at startup as command args. + +If BUFFER is nil, `call-process-region' returns immediately with value nil. +Otherwise it waits for PROGRAM to terminate +and returns a numeric exit status or a signal description string. +If you quit, the process is killed with SIGINT, or SIGKILL if you quit again. + +usage: (call-process-region START END PROGRAM &optional DELETE BUFFER DISPLAY &rest ARGS) */) + (nargs, args) int nargs; register Lisp_Object *args; { @@ -946,7 +1043,18 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.") coding_systems = Qt; +#ifdef HAVE_MKSTEMP + { + int fd = mkstemp (tempfile); + if (fd == -1) + report_file_error ("Failed to open temporary file", + Fcons (Vtemp_file_name_pattern, Qnil)); + else + close (fd); + } +#else mktemp (tempfile); +#endif filename_string = build_string (tempfile); GCPRO1 (filename_string); @@ -1043,7 +1151,7 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) #ifdef SET_EMACS_PRIORITY { - extern int emacs_priority; + extern EMACS_INT emacs_priority; if (emacs_priority < 0) nice (- emacs_priority); @@ -1070,7 +1178,14 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) register int i; i = STRING_BYTES (XSTRING (current_dir)); +#ifdef MSDOS + /* MSDOS must have all environment variables malloc'ed, because + low-level libc functions that launch subsidiary processes rely + on that. */ + pwd_var = (char *) xmalloc (i + 6); +#else pwd_var = (char *) alloca (i + 6); +#endif temp = pwd_var + 4; bcopy ("PWD=", pwd_var, 4); bcopy (XSTRING (current_dir)->data, temp, i); @@ -1204,12 +1319,9 @@ child_setup (in, out, err, new_argv, set_pgrp, current_dir) /* setpgrp_of_tty is incorrect here; it uses input_fd. */ EMACS_SET_TTY_PGRP (0, &pid); -#ifdef vipc - something missing here; -#endif /* vipc */ - #ifdef MSDOS pid = run_msdos_command (new_argv, pwd_var + 4, in, out, err, env); + xfree (pwd_var); if (pid == -1) /* An error occurred while trying to run the subprocess. */ report_file_error ("Spawning child process", Qnil); @@ -1302,16 +1414,16 @@ getenv_internal (var, varlen, value, valuelen) } DEFUN ("getenv-internal", Fgetenv_internal, Sgetenv_internal, 1, 1, 0, - "Return the value of environment variable VAR, as a string.\n\ -VAR should be a string. Value is nil if VAR is undefined in the environment.\n\ -This function consults the variable ``process-environment'' for its value.") - (var) + doc: /* Return the value of environment variable VAR, as a string. +VAR should be a string. Value is nil if VAR is undefined in the environment. +This function consults the variable ``process-environment'' for its value. */) + (var) Lisp_Object var; { char *value; int valuelen; - CHECK_STRING (var, 0); + CHECK_STRING (var); if (getenv_internal (XSTRING (var)->data, STRING_BYTES (XSTRING (var)), &value, &valuelen)) return make_string (value, valuelen); @@ -1377,7 +1489,11 @@ init_callproc () #ifndef DOS_NT /* MSDOS uses wrapped binaries, so don't do this. */ if (NILP (Fmember (tem, Vexec_path))) - Vexec_path = nconc2 (Vexec_path, Fcons (tem, Qnil)); + { + Vexec_path = decode_env_path ("EMACSPATH", PATH_EXEC); + Vexec_path = Fcons (tem, Vexec_path); + Vexec_path = nconc2 (decode_env_path ("PATH", ""), Vexec_path); + } Vexec_directory = Ffile_name_as_directory (tem); #endif /* not DOS_NT */ @@ -1400,12 +1516,15 @@ init_callproc () source directory. */ if (data_dir == 0) { - Lisp_Object tem, tem1, newdir; + Lisp_Object tem, tem1, srcdir; + srcdir = Fexpand_file_name (build_string ("../src/"), + build_string (PATH_DUMPLOADSEARCH)); tem = Fexpand_file_name (build_string ("GNU"), Vdata_directory); tem1 = Ffile_exists_p (tem); - if (NILP (tem1)) + if (!NILP (Fequal (srcdir, Vinvocation_directory)) || NILP (tem1)) { + Lisp_Object newdir; newdir = Fexpand_file_name (build_string ("../etc/"), build_string (PATH_DUMPLOADSEARCH)); tem = Fexpand_file_name (build_string ("GNU"), newdir); @@ -1475,43 +1594,59 @@ syms_of_callproc () #endif /* DOS_NT */ DEFVAR_LISP ("shell-file-name", &Vshell_file_name, - "*File name to load inferior shells from.\n\ -Initialized from the SHELL environment variable."); + doc: /* *File name to load inferior shells from. +Initialized from the SHELL environment variable. */); DEFVAR_LISP ("exec-path", &Vexec_path, - "*List of directories to search programs to run in subprocesses.\n\ -Each element is a string (directory name) or nil (try default directory)."); + doc: /* *List of directories to search programs to run in subprocesses. +Each element is a string (directory name) or nil (try default directory). */); + + DEFVAR_LISP ("exec-suffixes", &Vexec_suffixes, + doc: /* *List of suffixes to try to find executable file names. +Each element is a string. */); + Vexec_suffixes = Qnil; DEFVAR_LISP ("exec-directory", &Vexec_directory, - "Directory for executables for Emacs to invoke.\n\ -More generally, this includes any architecture-dependent files\n\ -that are built and installed from the Emacs distribution."); + doc: /* Directory for executables for Emacs to invoke. +More generally, this includes any architecture-dependent files +that are built and installed from the Emacs distribution. */); DEFVAR_LISP ("data-directory", &Vdata_directory, - "Directory of machine-independent files that come with GNU Emacs.\n\ -These are files intended for Emacs to use while it runs."); + doc: /* Directory of machine-independent files that come with GNU Emacs. +These are files intended for Emacs to use while it runs. */); DEFVAR_LISP ("doc-directory", &Vdoc_directory, - "Directory containing the DOC file that comes with GNU Emacs.\n\ -This is usually the same as data-directory."); + doc: /* Directory containing the DOC file that comes with GNU Emacs. +This is usually the same as data-directory. */); DEFVAR_LISP ("configure-info-directory", &Vconfigure_info_directory, - "For internal use by the build procedure only.\n\ -This is the name of the directory in which the build procedure installed\n\ -Emacs's info files; the default value for Info-default-directory-list\n\ -includes this."); + doc: /* For internal use by the build procedure only. +This is the name of the directory in which the build procedure installed +Emacs's info files; the default value for Info-default-directory-list +includes this. */); Vconfigure_info_directory = build_string (PATH_INFO); + DEFVAR_LISP ("shared-game-score-directory", &Vshared_game_score_directory, + doc: /* Directory of score files for games which come with GNU Emacs. +If this variable is nil, then Emacs is unable to use a shared directory. */); +#ifdef HAVE_SHARED_GAME_DIR + Vshared_game_score_directory = build_string(HAVE_SHARED_GAME_DIR); +#else + Vshared_game_score_directory = Qnil; +#endif + DEFVAR_LISP ("temp-file-name-pattern", &Vtemp_file_name_pattern, - "Pattern for making names for temporary files.\n\ -This is used by `call-process-region'."); + doc: /* Pattern for making names for temporary files. +This is used by `call-process-region'. */); /* This variable is initialized in init_callproc. */ DEFVAR_LISP ("process-environment", &Vprocess_environment, - "List of environment variables for subprocesses to inherit.\n\ -Each element should be a string of the form ENVVARNAME=VALUE.\n\ -The environment which Emacs inherits is placed in this variable\n\ -when Emacs starts."); + doc: /* List of environment variables for subprocesses to inherit. +Each element should be a string of the form ENVVARNAME=VALUE. +If multiple entries define the same variable, the first one always +takes precedence. +The environment which Emacs inherits is placed in this variable +when Emacs starts. */); #ifndef VMS defsubr (&Scall_process);