From bug-request at octave dot org Wed Jun 22 11:29:52 2005
Subject: Unidentified subject!
From: "Joseph P. Skudlarek" <Jskud at jskud dot com>
To: bug at octave dot org, Jskud@jskud.com
Date: Wed, 22 Jun 2005 09:28:38 -0700

To: bug at octave dot org
Cc: Jskud
Subject: single-quoted chars indexed from array become double-quoted


Bug report for Octave 2.9.3 configured for i686-pc-linux-gnu

Description:
-----------

    Extracting characters (via indexing) from a single quoted character
    array turns them into double quoted characters, thus triggering
    warnings when those extracted characters are used in concatenation
    expressions.

Repeat-By:
---------

    ## -*- Mode: octave; indent-tabs-mode: nil fill-column: 79 -*- ##

    sqx1 = [ 'single_' ];
    dqx1 = [ "double_" ];

    sqx2 = [ 'single_'; 'single_' ];

    dqx2 = [ "double_"; "double_" ];

    [ sqx1 'ok-fine' ]
    [ dqx1 "ok-fine" ]
    [ sqx1 "ok-warn" ]
    [ dqx1 'ok-warn' ]

    ## FYI: must transpose indexed value to get row counts to match, and avoid
    ## error: number of rows must match (1 != 7) near line 17, column 12
    ##
    [ sqx1(:)' 'bogus-warn' ]
    [ dqx1(:)' "ok-fine" ]
    [ sqx1(:)' "bogus-fine" ]
    [ dqx1(:)' 'ok-warn' ]

    [ sqx2(1,:) 'bogus-warn' ]
    [ sqx2(1,:) "bogus-fine" ]
    [ dqx2(1,:) 'ok-warn' ]
    [ dqx2(1,:) "ok-fine" ]

    [ sqx2(1) '_bogus-warn' ]
    [ dqx2(1) "_ok-fine" ]
    [ sqx2(1) "_bogus-fine" ]
    [ dqx2(1) '_ok-warn' ]

    ## works just fine
    [ sqx2; 'ok-fine' ]
    [ dqx2; "ok-fine" ]

    #[]#


Fix:
---


Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Linux echo.jskud.com 2.4.20-31.9smp #1 SMP Tue Apr 13 17:40:10 EDT 2004 i686 i686 i386 GNU/Linux
configure opts:   '--prefix=/usr/local/octave/2.9.3' '--enable-shared' '--enable-dl' '--enable-lite-kernel' '--disable-readline'
Fortran compiler: g77
FFLAGS:           -O
F2C:              
F2CFLAGS:         
FLIBS:            -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2 -L/usr/lib/gcc-lib/i386-redhat-linux/3.2.2/../../.. -lfrtbegin -lg2c -lm -lgcc_s
CPPFLAGS:         
INCFLAGS:         -I. -I. -I./liboctave -I./src -I./libcruft/misc 
C compiler:       gcc, version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
CFLAGS:           -O2
CPICFLAG:         -fPIC
C++ compiler:     g++, version 3.2.2
CXXFLAGS:         -O2
CXXPICFLAG:       -fPIC
LD_CXX:           g++
LDFLAGS:          
LIBFLAGS:         -L.
RLD_FLAG:         -Wl,-rpath -Wl,/usr/local/octave/2.9.3/lib/octave-2.9.3
BLAS_LIBS:        -llapack -lblas
FFTW_LIBS:        
LIBS:             -lncurses -ldl -lm 
LEXLIB:           
LIBPLPLOT:        
LIBDLFCN:         
LIBGLOB:          %OCTAVE_CONF_LIBGLOB%
SED:              /bin/sed
DEFS:

  -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION=""
  -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1
  -D_GNU_SOURCE=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
  -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DSEPCHAR=1
  -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 -DCXX_NEW_FRIEND_TEMPLATE_DECL=1
  -DCXX_ISO_COMPLIANT_LIBRARY=1 -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1
  -DHAVE_IEEE754_DATA_FORMAT=1 -DF77_FUNC(name,NAME)=name ## _
  -DF77_FUNC_(name,NAME)=name ## __ -DHAVE_BLAS=1 -DHAVE_GETHOSTNAME=1
  -DHAVE_GETPWNAM=1 -DHAVE_DEV_T=1 -DHAVE_INO_T=1 -DHAVE_NLINK_T=1
  -DHAVE_NLINK_T=1 -DHAVE_LONG_LONG_INT=1 -DHAVE_UNSIGNED_LONG_LONG_INT=1
  -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1 -DSIZEOF_SHORT=2
  -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8 -DHAVE_ALLOCA_H=1
  -DHAVE_ALLOCA=1 -DNPOS=std::string::npos -DHAVE_PLACEMENT_DELETE=1
  -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1 -DHAVE_DIRENT_H=1
  -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 -DHAVE_ASSERT_H=1
  -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1 -DHAVE_FLOAT_H=1
  -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NCURSES_H=1
  -DHAVE_POLL_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1
  -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_POLL_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_SYS_STAT_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1
  -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_UNISTD_H=1
  -DHAVE_VARARGS_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1
  -DHAVE_SGTTY_H=1 -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 -DHAVE_BCOPY=1
  -DHAVE_BZERO=1 -DHAVE_CANONICALIZE_FILE_NAME=1 -DHAVE_DUP2=1
  -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1
  -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1
  -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1
  -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1
  -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1
  -DHAVE_KILL=1 -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1 -DHAVE_LSTAT=1
  -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_MKSTEMP=1
  -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_POLL=1 -DHAVE_PUTENV=1
  -DHAVE_RAISE=1 -DHAVE_READLINK=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1
  -DHAVE_RMDIR=1 -DHAVE_ROUND=1 -DHAVE_SELECT=1 -DHAVE_SETGRENT=1
  -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGLONGJMP=1
  -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 -DHAVE_STAT=1
  -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRFTIME=1
  -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1 -DHAVE_SYMLINK=1 -DHAVE_TEMPNAM=1
  -DHAVE_UMASK=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1 -DHAVE_VFPRINTF=1
  -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1 -DHAVE_WAITPID=1 -DHAVE_LIBDL=1
  -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1
  -DHAVE_DLOPEN_API=1 -DENABLE_DYNAMIC_LINKING=1 -DHAVE_TIMEVAL=1
  -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_COPYSIGN=1
  -DHAVE_DECL_SIGNBIT=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1
  -DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1
  -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1
  -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DEXCEPTION_IN_MATH=1
  -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1 -DHAVE_SYS_SIGLIST=1
  -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 -DHAVE_TIMES=1
  -DYYTEXT_POINTER=1 -DGNUPLOT_BINARY="gnuplot" -DGNUPLOT_HAS_FRAMES=1

User-preferences (please do not edit this section):
--------------------------------------------------

  DEFAULT_EXEC_PATH = "/usr/local/octave/2.9.3/libexec/octave/2.9.3/site/exec/i686-pc-linux-gnu:/usr/local/octave/2.9.3/libexec/octave/site/exec/i686-pc-linux-gnu:/usr/local/octave/2.9.3/libexec/octave/2.9.3/exec/i686-pc-linux-gnu:/usr/local/octave/2.9.3/bin"
  DEFAULT_LOADPATH = ".:/usr/local/octave/2.9.3/libexec/octave/2.9.3/site/oct/i686-pc-linux-gnu//:/usr/local/octave/2.9.3/libexec/octave/site/oct/api-v16/i686-pc-linux-gnu//:/usr/local/octave/2.9.3/libexec/octave/site/oct/i686-pc-linux-gnu//:/usr/local/octave/2.9.3/share/octave/2.9.3/site/m//:/usr/local/octave/2.9.3/share/octave/site/api-v16/m//:/usr/local/octave/2.9.3/share/octave/site/m//:/usr/local/octave/2.9.3/libexec/octave/2.9.3/oct/i686-pc-linux-gnu//:/usr/local/octave/2.9.3/share/octave/2.9.3/m//"
  EDITOR = "emacs"
  EXEC_PATH = ":.:/home/Jskud/.bin:/home/Jskud/.bin.i686:/usr/local/bin:/bin:/usr/bin:/home/Jskud/bin:/sbin:/usr/sbin:/usr/local/sbin:/usr/X11R6/bin"
  IMAGEPATH = ".:/usr/local/octave/2.9.3/share/octave/2.9.3/imagelib//"
  INFO_FILE = "/usr/local/octave/2.9.3/info/octave.info"
  INFO_PROGRAM = "info"
  LOADPATH = ":"
  PAGER = "less -e -X -P'-- less ?pB(%pB\\%):--. (f)orward, (b)ack, (q)uit$'"
  PS1 = "\\s> "
  PS2 = "> "
  PS4 = "+ "
  automatic_replot = 1
  beep_on_error = 0
  completion_append_char = " "
  crash_dumps_octave_core = 1
# default_save_format = <no value or error in displaying it>
  echo_executing_commands = 0
  fixed_point_format = 0
  gnuplot_binary = "gnuplot"
  gnuplot_command_end = "\n"
  gnuplot_command_plot = "pl"
  gnuplot_command_replot = "rep"
  gnuplot_command_splot = "sp"
  gnuplot_command_title = "t"
  gnuplot_command_using = "u"
  gnuplot_command_with = "w"
  gnuplot_has_frames = 1
  history_file = "/home/Jskud/.octave_hist"
  history_size = 1024
  ignore_function_time_stamp = "system"
  max_recursion_depth = 256
  output_max_field_width = 10
  output_precision = 5
  page_output_immediately = 0
  page_screen_output = 0
  print_answer_id_name = 1
  print_empty_dimensions = 1
  print_rhs_assign_val = 0
# return_last_computed_value = <no value or error in displaying it>
  save_precision = 15
  saving_history = 1
  sighup_dumps_octave_core = 1
  sigterm_dumps_octave_core = 1
  silent_functions = 0
  split_long_rows = 1
  string_fill_char = " "
  struct_levels_to_print = 2
  suppress_verbose_help_message = 0
  warn_assign_as_truth_value = 1
  warn_divide_by_zero = 1
  warn_empty_list_elements = 0
  warn_fortran_indexing = 0
  warn_function_name_clash = 1
  warn_future_time_stamp = 1
  warn_imag_to_real = 0
  warn_missing_semicolon = 0
  warn_neg_dim_as_zero = 0
  warn_num_to_str = 1
  warn_resize_on_range_error = 0
  warn_separator_insert = 0
  warn_single_quote_string = 0
  warn_str_to_num = 0
  warn_undefined_return_values = 1
  warn_variable_switch_label = 0

[]



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