Changelog

2026-03-31 FL 0.8

error handling: crash fix
I/O: implied print: non-ascii character handling fix
I/O: leading space in format fix
I/O: SIGPIPE fix
interactive commands: .STEP fix
object method call fixes
compiler: octal input fix
variable attributes: TYPESIZE added
window resizing: !D update fix
BESEL*: /DOUBLE fix
BETA: /DOUBLE fix
CDF_VARGET: REC_COUNT fix
CEIL/FLOOR/ROUND: /L64 fix
COMPILE_OPT: LOGICAL_PREDICATE fix
DETERM: always use CHECK=1
DLM_LOAD: windows fix
EXIT: status fix
FILE_HASH: added
FZ_ROOTS: NaN result fix
GEOTIFF supportt added
GRIDDATA: grid generation fix
HDF5 support added (incomplete)
HDF_SD_ATTRINFO: string attr length fix
HDF_SD_GETDATA: default fill value fix
HELP: OUTPUT fix
HISTOGRAM: LOCATIONS fix
IDL_BASE64: added
IGAMMA: /DOUBLE fix
IMAGINARY: non-complex input fix
INTERPOLATE: crash fix
LOADCT: read from file fix
READ/READF/READS: 0b, 0o and 0x integer prefixes added
READ_TIFF: GEOTIFF added
RESTORE: crash fix
RETURN command fix
ROUTINE_INFO: K_PARAMETERS fix
SCOPE_VARNAME: COMMON fix
TOTAL: /CUMULATIVE fix
TOTAL: scalar fix
VOIGT: sign of result for negative input fix
WHERE: crash fix
WIDGET_TREE: added
WRITE_TIFF: GEOTIFF added

2024-01-21 FL 0.79.54

GUI: carriage return handling fix
compiler: 0b and 0o prefixes for binary and octal constants added
heap variables: reference count fix
main module: reset fix
object methods: single element object array fix
BYTEORDER: SWAP_IF_BIG_ENDIAN fix
CANNY: added
COMPILE_CODE: added
COMPILE_OPT: FLOAT64 and IDL3 added
CONVOL: /EDGE_REFLECT added
CURSOR: button fix
DICTIONARY: dot access fix
EXECUTE: return value fix
FILE_MODTIME: added
GET_KBRD: case fix
HEAP_FREE: recursive free fix
HELP: missing text in journal fix
HOUGH: added
I/O: integer format code with float variables fix
IDLNETURL: inheritance fix
INTERPOL: return type fix
ISA: /UNSIGNED added
JSON_PARSE: UTF-8 input fix
MATRIX_MULTIPLY: return type for integer input fix
POLY_FIT: degree=0 fix
PTR_NEW: assoc variable fix
RADON: added
READS: invalid float input fix
SOCKET: /LISTEN fix

2023-04-10 FL 0.79.53

_REF_EXTRA: assoc variables fix
AXIS: default STYLE fix
CDF_COMPRESSION: GET_/SET_VAR_BLOCKINGFACTOR added
CHOLDC: complex argument fix
CONVOL: /NORMALIZE fix
CONVOL: 3D fix
CONVOL: EDGE_CONSTANT added
CREATE_STRUCT: crash fix
DIALOG_PICKFILE: FILTER crash fix
FIX: convert to byte fix
HISTOGRAM: MAX fix
LA_DETERM: sign fix
MESSAGE: /RESET fix
MIN/MAX: string argument fix
OPLOT: range fix
PLOT: complex arguments fix
READ_ASCII: result tag names fix
READ_IMAGE: JPEG read fix
SHADE_SURF: SHADES fix
SURFACE: SHADES fix
WIDGET_INFO: array input fix
WSET: window size fix

2022-09-19 FL 0.79.52

CDF_ATTGET: CDF_BYTE and CDF_INT1 read fix
CDF_VARGET: CDF_BYTE and CDF_INT1 read fix
CREATE_STRUCT: REMOVE added
CURSOR: button release fix
CURSOR: /DATA fix
direct graphics: HiDPI support rewritten
FFT: rewritten with PocketFFT
FINITE: rewritten
HANDLE_CREATE: added
HANDLE_FREE: added
HANDLE_INFO: added
HANDLE_MOVE: added
HANDLE_VALUE: added
HDF_SD_ATTRINFO: string value fix
HDF_SD_GETDATA: empty dataset fix
IDLNETURL::PUT: POST fix
IDLNETURL::PUT: /STRING_ARRAY added
INTERPOL: complex XOUT fix
LABEL_REGION: rewritten
NCDF_OPEN: DAP support added
READ_IMAGE: several fixes
READS: COMPLEX read fix
READU: string read fix
REBIN: rewritten
TOTAL: /INTEGER and /PRESERVE_TYPE fix
WIDGET_INFO: /DISPLAY added
XYOUTS: size fix

2022-02-20 FL 0.79.51

compiler: out of range integer literals compatibility fix
object method call: SELF creation fix
I/O: formatted read rewritten
*INDGEN: START and INCREMENT fix
BREAKPOINT: several fixes
CATCH: missing positional argument fix
FILE_DELETE: symlink and directory fix
FIX: offset and TYPE fixes
IDL_CONTAINER::EQUALS: added
IDL_CONTAINER::GET: NULL added
IDLffXMLSAX class: rewritten
ISA: rewritten
MAKE_ARRAY: VALUE fix
NCDF_DIMIDSINQ: added
NCDF_FULLGROUPNAME: added
NCDF_GROUPDEF: added
NCDF_GROUPNAME: added
NCDF_GROUPPARENT: added
NCDF_GROUPSINQ: added
NCDF_NCIDINQ: added
NCDF_UNLIMDIMSINQ: added
NCDF_VARIDSINQ: added
OBJ_ISA: string arg fix
PARSE_URL: rewritten
PRINTF: IMPLIED_PRINT added
STRTRIM: rewritten
SYSTIME: ELAPSED added
WIDGET_CONTROL: ACTIVE added

2021-07-18 FL 0.79.50

.compile: -v added
routine call: _REF_EXTRA fix
scanner: 9223372036854775808 accepted
DEVICE: FONT added
DEVICE: GET_FONTNAMES fix
EXECUTE: implied print fix
HASH: rewritten
IDLffXMLDOM* classes: added
IDLffXMLSAX class: added
NCDF_ATTINQ: NC_CHAR data type fix
NCDF_ATTPUT: empty string fix
NCDF_CREATE: NETCDF3_64BIT and NETCDF4_FORMAT added
NCDF_VARINQ: NC_CHAR data type fix
WIDGET_CONTROL: MAP added
WIDGET_CONTROL: crash fix
WIDGET_DRAW: default VALUE added

2021-03-28 FL 0.79.49

graphics: PDF fixes
!CONST: added
HANNING: added
HASH::ERASE: crash fix
HELP: /LAST_MESSAGE fix
INTERPOLATE: CUBIC fix
ISA: undef fix
LA_EIGENPROBLEM: crash fix
LA_HQR: crash fix
LA_LEAST_SQUARES: crash fix
LOGICAL_AND/OR: object fix
REBIN: shrink with /SAMPLE fix
REGRESS: added

2020-09-20 FL 0.79.48

bool fixes
graphics: PSYM size fix
graphics: axis range fix
graphics: log axis fix
graphics: pixmap fixes
graphics: [xy]_ch_size persistence fix
heap: reference counting fixes
memory leak fixes
objects: inheritance fix
structure creation: rewritten
subscripting: POINTER and OBJECT array array-subscripting fix
thread pool: max. 64 threads allowed
variable attributes: object array fix
ARRAY_INDICES: out of bounds check fix
BESEL*: negative x argument fix
BYTE: empty string array arg fix
BYTSCL: /NAN fix
BYTSCL: complex fix
CD: Windows fix
COMMON: crash fix
CONGRID: 1D shrink fix
CORRELATE: crash fix
CREATE_STRUCT: append mode added
CURSOR: WaitFlag fix
DEFSYSV: TEST added
DIALOG_PICKFILE: Windows '.' directory fix
EXPAND_PATH: shell variables fix
EXPAND_PATH: duplicates fix
FFT: CENTER added
FILE_MKDIR: missing parent fix
FILE_SEARCH: several fixes
FOREACH: variable type fix
FSTAT: closed unit fix
FSTAT: socket NAME fix
GUI: Control-C handling added
HELP: /PATH_CACHE added
HELP: /SHARED_MEMORY crash fix
HELP: /STRUCTURE refs added
HELP: assoc variables fix
I/O: free format read fixes
IDLNETURL: HEADERS property fixes
IDLNETURL::INIT: undefined arguments fix
INDGEN family: undefined START and INCREMENT fix
LABEL_REGION: type fix
LIST::TOARRAY: scalar fix
MACHAR: MINEXP fix
MOMENT: return type fix
N_TAGS: object arg fix
OPENR/U/W: directory fix
PLOTS: color array fix
POLY_FIT: crash fix
QHULL: CONNECTIVITY added
QUERY_TIFF: more tags added
RESOLVE_ROUTINE: crash fix
RETURN: assoc variable fix
REVERSE: rewritten
ROUTINE_DIR: added
ROUTINE_INFO: PARAMETERS fix
SHMMAP: structure TEMPLATE fix
SIZE: /STRUCT STRUCTURE_NAME fix
SPAWN: UNIT fix
!STIME: value fix
STRPUT: byte input fix
STRSPLIT: infinite loop fix
STRTRIM: remove space and tab only
TAG_NAMES: objects fix
TRANSPOSE: structures fix
TRIANGULATE: CONNECTIVITY added
TRIGRID: MIN_VALUE/MAX_VALUE added
TYPENAME: structures fix
VALUE_LOCATE: rewritten
WHERE: NCOMPLEMENT fix
WIDGET_CONTROL: APPEND added
WIDGET_CONTROL: SHOW added
WRITE_JPEG: missing fclose fix
WRITE_JPEG: overwrite fix
XYOUTS: color array fix
XYOUTS: CHARTHICK and SIZE fix

2019-05-17 FL 0.79.47

structure creation: rewritten
subscripting: !NULL fixes
AXIS: T3D fix
GRIDDATA: crash fix
HELP: SHARED_MEMORY added
IDLNETURL: ENCODE fix
IDLNETURL::FTPCOMMAND: return value fix
OPENR: (dummy) WIDTH added
SEM_CREATE: added
SEM_DELETE: added
SEM_LOCK: added
SEM_RELEASE: added
SHMDEBUG: added
SHMMAP: added
SHMUNMAP: added
SHMVAR: added
SURFACE: SKIRT added
TIMER: callback routine resolution fix

2019-01-07 FL 0.79.46

compund assignment: crash fix
struct creation speedup
system variables: !FL added
FPU exceptions: disabled on MacOS
I/O: file append fix
COS: speedup
GETENV: trailing slash fix
HASH: EXTRACT and LOWERCASE added
HASH::TOSTRUCT: RECURSIVE added
LIST and HASH: subscripting fixes
SPAWN: output fix
TOTAL: INTEGER for complex input added

2018-08-05 FL 0.79.45

compound assignment: #= and ##= fix
environment: IDL_TMPDIR: trailing slash added
format: Inf and Nan fixes
heap variables: reference count fixes
implied PRINT: several minor fixes
subscripting: single element array on RHS fix
INDGEN family: START and INCREMENT fix
INDGEN family: string type fix
ARRAY_EQUAL: NOT_EQUAL fix
CDF_ATTPUT: CDF_* types added
FILE_CHMOD: keyword handling fix
FILE_SAME: Windows fix
FILE_TEST: GET_MODE fix
GRIDDATA: crash fix
HELP: HEAP and ROUTINES fix
JSON_PARSE: added
JSON_SERIALIZE: added
LSODE: ATOL fix
MIN and MAX: ABSOLUTE fix
MIN and MAX: multithreaded SUBSCRIPT_* fix
MIN and MAX: NaN handling fix
PROFILER: several fixes
SVDC: several fixes
SVSOL: non-square matrix fix
WIDGET_TEXT: GET_UVALUE crash fix

2018-04-16 FL 0.79.44

compiler: variable-function ambiguity fix
distributed FL: nonfunctional, removed
graphics: invalid !P.MULTI handling fix
operator ##: integer vector-matrix crash fix
!NULL: undef assigned to !NULL fix
I/O: free format fixes
CEIL/FLOOR/ROUND: complex fix
CONGRID: accuracy fix
CURVEFIT: fit function independent variable fix
DICTIONARY::SETPROPERTY: _EXTRA fix
FILE_MOVE: several fixes
FILE_POLL_INPUT: added
FILE_TEST: empty file name fix
FINITE: SIGN=0 fix
HEAP_REFCOUNT: pointer fix
HELP: several fixes
IDL_VALIDNAME: leading ! fix
IDLNETURL class: several fixes
LIST,HASH::FILTER,MAP,REDUCE: extra arguments fix
MAKE_DLL: compiler options fix
MAX/MEDIAN/MIN: string input fix
MEDIAN: complex input fix
N_TAGS: DATA_LENGTH fix
OPEN*: RAWIO added
PLOT: negative PSYM fix
PREF_GET: (dummy) added
READ_ASCII: several fixes
READ_JPEG: error handling fix
READ_TIFF: crash fix
READ_TIFF: PLANARCONFIG fix
SOCKET: added
TIMER class: added
TOTAL: LONG/LONG64 return type fix
WGET: added
WRITE_TIFF: crash fix

2018-01-26 FL 0.79.43.1

graphics: widget_draw regression fix
graphics: Z device regression fix
graphics: windows resize regression fix
TVRD: regression fix

2018-01-13 FL 0.79.43

graphics: ISOTROPIC fix
I/O: C-style formatting and XDR fixes
objects: garbage collection fix
subscripting: extra subscripts fix
APP_USER_DIR: (incomplete) added
APP_USER_DIR_QUERY: (incomplete) added
CPU: TPOOL_MIN_ELTS fix
DIALOG_PICKFILE: initial directory and filter fix
F_CVF: array arg fix
F_PDF: array arg fix
FSTAT: compressed file size fix
GRIDDATA: (incomplete) added
IBETA: array arg fix
IDLNETURL::SETPROPERTY: EXTRA and PORT fixes
INTERPOLATE: DOUBLE added
LEGENDRE: array arg fix
LINFIT: CHISQR name fix
POINT_LUN: compressed file fix
QROM*: array arg fix
QUERY_ASCII: added
READ_ASCII: added
READF: compressed file new-line handling fix
SCOPE_VARFETCH: REF_EXTRA fix
STREGEX: non-string first arg fix
VOIGT: added
WIDGET_BASE: (dummy) RENDERER and TOOLBAR added
WIDGET_CONTROL: SET_TEXT_TOP_LINE added

2017-10-08 FL 0.79.42

graphics: embedded formatting fixes
graphics: Postscript color setting fix
graphics: Postscript hardware fonts added
graphics: Y-axis tick labels reference fix
routine lookup fix
scanner: INHERITS fix
structure definition lookup fix
syntax: 0x… hex constants added
CONGRID: interpolation fix
CREATE_STRUCT: structure definition fix
LSODE: added
NORM: non-integer LNORM fix
RK4: added
WIDGET_CONTROL: (dummy) UPDATE added

2017-06-22 FL 0.79.41

class IDLNETURL: added
class inheritance: crash on invalid code fix
graphics: Postscript crash fix
graphics: YSTYLE=16 fix
subscripting: crash on error fix
variable attributes: invalid name error handling fix
BREAK and CONTINUE: removed from reserved words
DEVICE: CURSOR_ORIGINAL and (dummy) CURSOR_STANDARD added
DEVICE: SET_CHARACTER_SIZE added
DOC_LIBRARY: added
GETENV: IDL_TMPDIR fix
HELP: /FILES fix
[LIST,HASH]::[COUNT,FINDVALUE,WHERE]: VALUE fix
MATRIX_MULTIPLY: transpose fix
PARSE_URL: added
QHULL: >2D convex hull fix
TV: TRUE with DECOMPOSED=0 fix
TV: TRUE=0 fix
TV: [XY]SIZE fix
TVRD: macos fix
WHERE: crash fix
WIDGET_BASE: APP_MBAR added
WIDGET_INFO: TYPE added
WRITE_JPEG: PROGRESSIVE added
WRITE_PNG: BUFFER, TRANSPARENT and [XY]RESOLUTION added
WRITE_PNG: palette fix

2017-05-13 FL 0.79.40

aarch64 (ARM64) architecture: added
graphics: ![XYZ].RANGE fix
min/max and relational operators: complex fixes
objects: member access fix
subscripting: crash on error fix
AMOEBA: added
ARRAY_EQUAL: error handling fix
CDF_EPOCH*: crash fix
CDF_LEAPSECONDS_INFO: added
DFPMIN: added
DIAG_MATRIX: scalar input fix
HELP: /HEAP fix
HELP: /LIB, NAME=… fix
ISA: several fixes
LIST: rewritten
LMFIT: added
MATRIX_MULTIPLY: transpose fix
OPLOTERR: added
PLOTERR: added
POWELL: added
RANDOM*: compatibility fix
WHERE: NCOMPLEMENT with /NULL fix

2017-01-31 FL 0.79.39

object method call: crash on error fix
I/O: X format fix
COMFIT: added
CORRELATE: added
CURVEFIT: added
EIGENQL: added
FACTORIAL: added
FILE_INFO: symlink fix
FILE_TEST: symlink fix
GAUSSFIT: added
HELP: boolean structure fields fix
INT_TABULATED: added
ISA: NULL objref fix
LINFIT: added
MAKE_ARRAY: several fixes
MATRIX_MULTIPLY: ACONJTRANSPOSE and BCONJTRANSPOSE added
POLY_FIT: added
QROMB: added
QROMO: added
QSIMP: added
RESTORE: positional args fix
SMOOTH: several fixes
TRIQL: bug fix
TRIQL_NOVEC: added

2016-10-20 FL 0.79.38

error messages: variable name fix
graphics: SUBTITLE added
graphics: USERSYM fix
subscripting: !NULL fixes
subscripting: negative subscripts crash fix
user interface: Control-C fix
ARRAY_EQUAL: QUIET fix
BILINEAR: added
CLOSE: SPAWN pipe fix
COND: added
CROSSP: added
DEVICE: (dummy) PS hardware font keywords added
FILE_SEARCH: (incomplete, Linux/OSX only) FOLD_CASE added
FOREACH: index after loop exit fix
FSTAT: BOOLEAN fix
HELP: structure fixes
INTERPOL: added
ISA: IDL_VARIABLE et al fix
LOGICAL AND/OR: test fix
NCDF_ATTPUT: unsigned integer types added
NCDF_VARDEF: unsigned integer types added
OPEN*: XDR added
OPENU: APPEND=0 fix
OPLOT: POLAR fix
PLOTIO: lin/log fix
PREWITT: added
PRINT: space before strings fix
PROFILER: several fixes
PTR_NEW: undefined fix
QUERY_BMP: channels fix
QUERY_PNG: several fixes
READ_PNG: several fixes
RESOLVE_ROUTINE: system routines fix
RESTORE: wrapper for CMRESTORE added
SAVE: wrapper for CMSAVE added
SPAWN: rewritten
WIDGET_CONTROL: INPUT_FOCUS added
WIDGET_CONTROL: WIDGET_TEXT GET_VALUE crash fix
WIDGET_DRAW: COLORS added
WIDGET_DRAW: scroll fix
WIDGET_INFO: VALID_ID fix
WRITE_PNG: palette fix
WRITE_TIFF: samples per pixel fix

2016-07-06 FL 0.79.37

graphics: font size fix
graphics: tick marks fix
parser: variable subscripting/function call ambiguity fix
COMPILE_OPT: STATIC crash fix
CALL_METHOD: class static methods fix
PRINTF: line width fix

2016-06-09 FL 0.79.36

compiler: caret diagnostics added
garbage collection: rewritten
graphics: font size fix
graphics: line width fix
graphics: [XYZ]STYLE fix
reference counting: various fixes
subscripting: array insertion fixes
.RESET: rewritten
.FULL_RESET: rewritten
AXIS: range fix
COMPILE_OPT: LOGICAL_PREDICATE fixes
CONTOUR: crash fix
FREE_LUN: STATUS added
HEAP_FREE: rewritten
HEAP_GC: rewritten
HEAP_REFCOUNT: added
INDGEN: integer array signedness fix
LIST::MOVE: added
LIST::SWAP: added
LIST::TOARRAY: DIMENSION, PROMOTE_TYPE added
MAKE_ARRAY: integer array signedness fix
OBJ_DESTROY: rewritten
OBJ_NEW: rewritten
OPEN*: DELETE added
READ_IMAGE: crash fix
TVSCL: keywords fix
TV: x,y position fix

2015-12-08 FL 0.79.35

auto instantiation: object type fix
hash: subscripting crash fix
implied PRINT: missing newline for string arrays fix
thread pool: crash fix
.RNEW: variable clearing fix
ALOG2: added
AXIS: NODATA added
BIN_DATE: added
CASE/SWITCH: empty CASE block fix
CDF_ENCODE_EPOCH16: vectorized
CDF_ENCODE_EPOCH: vectorized
CDF_ENCODE_TT2000: added
CDF_EPOCH16: vectorized
CDF_EPOCH: vectorized
CDF_EPOCH_COMPARE: TT2000 handling added
CDF_EPOCH_DIFF: TT2000 handling added
CDF_PARSE_EPOCH16: vectorized
CDF_PARSE_EPOCH: vectorized
CDF_PARSE_TT2000: added
CDF_SET_MD5CHECKSUM: added
CDF_SET_VALIDATE: added
CDF_TT2000: added
CDF_VARCREATE: CDF_TIME_TT2000 added
COMMON: redefinition with different size fix
CONGRID: added
CONTOUR: MIN_VALUE and MAX_VALUE added
DILATE: added
ERODE: added
FILE_CHMOD: MODE fixes
FILE_LINK: added
FILE_READLINK: added
HELP: LAST_MESSAGE fix
HELP: SYSTEM_VARIABLES fixes
I/O: text lines without newline fix
IDL_OBJECT::_OVERLOADFUNCTION: added
IDL_OBJECT::_OVERLOADMETHOD: added
IDL_OBJECT::_OVERLOADMINUSMINUS: added
IDL_OBJECT::_OVERLOADPLUSPLUS: added
IDL_OBJECT::_OVERLOADPOSTINCREMENTCOPY: added
IDL_OBJECT::_OVERLOADPOSTINCREMENTCOPY: return value fix
IDL_VARIABLE::TOLIST: added
INDGEN family: START and INCREMENT added
LAMBDA: crash fix
LUDC: COLUMN added
LUMPROVE: COLUMN added
LUSOL: COLUMN added
MESSAGE: LEVEL added
NORM: added
OPEN*: SWAP* fix
POLY: added
READS: free format space handling fix
RESOLVE_ROUTINE: QUIET added
ROT: added
RSTRPOS: added
STR_SEP: added
SWAP_ENDIAN: added
SWAP_ENDIAN_INPLACE: added
TRIANGULATE: border points sort fix
TV: NAN added
TVSCL: NAN added
WRITE_GIF: DELAY_TIME and REPEAT_COUNT added
WRITE_GIF: MULTIPLE and CLOSE added
WRITE_GIF: RED, GREEN and BLUE added
WRITE_TIFF: RED, GREEN, BLUE and PLANARCONFIG added

2015-09-01 FL 0.79.34

I/O: several FORMAT fixes
graphics: default window size fix
multithreading: possible data race fixes
CONTOUR: ZAXIS added
QUERY_IMAGE: added
READ_IMAGE: added
TV: /DATA fix
TVSCL: POSITION, CHANNEL and /DATA fix
WINDOW: position fix
WRITE_GIF: crash fix
WRITE_IMAGE: added

2015-07-17 FL 0.79.33

Assoc variables: SWAP_ENDIAN fix
format: parser fixes
graphics: default window size fix
graphics: several Postscript fixes
graphics: TICKFORMAT user-defined function fix
implied PRINT: batch file fix
keyword handling: crash fix
netlib BLAS replaced with OpenBLAS
AXIS: position fix
FSTAT: SPAWN pipe fix
HEAP_NOSAVE: dummy added
HEAP_SAVE: dummy added
HELP: /LAMBDA added
IDL_VALIDNAME: reserved words fix
IOCTL: added
PLOT: grid fix
PLOT: negative TICKLEN fix
READF: EOF handling fix
SCOPE_VARFETCH: REF_EXTRA fix
STRPOS: REVERSE fix
STRUCT_ASSIGN: array arguments fix
WINDOW: default size fix

2015-04-08 FL 0.79.32

array subscripting: 3+D insertion fix
boolean variables: added
class static methods: added
colon operator indgen: added
floating-point literals: compatibility fix
lambda expressions: added
variable attributes: added
variable static methods: added
T format code: wrong value at the beginning of line fix
ARG_PRESENT: wrong return value in recursive call fix
BOOLARR: added
BOOLEAN: added
CALDAT: PROLEPTIC_GREGORIAN added
CASE / SWITCH variable: memory leak fix
FINDFILE: zero arguments fix
HASH::FILTER: added
HASH::MAP: added
HASH::REDUCE: added
IDL_INTEGER::BITGET: added
IDL_INTEGER::BITLENGTH: added
IDL_INTEGER::BITSET: added
IDL_INTEGER::BITSHIFT: added
IDL_INTEGER::TOASCII: added
IDL_INTEGER::TOBINARY: added
IDL_INTEGER::TOHEX: added
IDL_INTEGER::TOOCTAL: added
IDL_NUMBER::CEIL: added
IDL_NUMBER::FLOOR: added
IDL_NUMBER::IMAGINARY: added
IDL_NUMBER::MAX: added
IDL_NUMBER::MEAN: added
IDL_NUMBER::MEDIAN: added
IDL_NUMBER::MIN: added
IDL_NUMBER::PRODUCT: added
IDL_NUMBER::REAL: added
IDL_NUMBER::ROUND: added
IDL_NUMBER::SIGNUM: added
IDL_NUMBER::TOTAL: added
IDL_POINTER::PTRTYPE: added
IDL_POINTER::VALID: added
IDL_STRING::CAPWORDS: added
IDL_STRING::CHARAT: added
IDL_STRING::COMPRESS: added
IDL_STRING::CONTAINS: added
IDL_STRING::ENDSWITH: added
IDL_STRING::EXTRACT: added
IDL_STRING::INDEXOF: added
IDL_STRING::INSERT: added
IDL_STRING::JOIN: added
IDL_STRING::LASTINDEXOF: added
IDL_STRING::MATCHES: added
IDL_STRING::REMOVE: added
IDL_STRING::REPLACE: added
IDL_STRING::REVERSE: added
IDL_STRING::SPLIT: added
IDL_STRING::STARTSWITH: added
IDL_STRING::STRLEN: added
IDL_STRING::SUBSTRING: added
IDL_STRING::TOBYTE: added
IDL_STRING::TOLOWER: added
IDL_STRING::TOLOWER: added
IDL_STRING::TOUPPER: added
IDL_STRING::TOUPPER: added
IDL_STRING::TRIM: added
IDL_VARIABLE::COMPARE: added
IDL_VARIABLE::CONVERT: added
IDL_VARIABLE::DIFF added
IDL_VARIABLE::EQUALS: added
IDL_VARIABLE::FILTER: added
IDL_VARIABLE::FINITE: added
IDL_VARIABLE::ISFINITE: added
IDL_VARIABLE::ISNAN: added
IDL_VARIABLE::ISREAL: added
IDL_VARIABLE::MAP: added
IDL_VARIABLE::PTRVALID: added
IDL_VARIABLE::REDUCE: added
IDL_VARIABLE::REFORM: added
IDL_VARIABLE::SHIFT: added
IDL_VARIABLE::SORT added
IDL_VARIABLE::TODOUBLE: added
IDL_VARIABLE::TOINTEGER: added
IDL_VARIABLE::TOSTRING: added
IDL_VARIABLE::UNIQ: added
ISA: /BOOLEAN added
JULDAY: PROLEPTIC_GREGORIAN added
LAMBDA: added
LAMBDAP: added
LIST::FILTER: added
LIST::MAP: added
LIST::REDUCE: added
LIST::SORT: added
READ_TIFF: ORDER and ORIENTATION added
SCOPE_VARFETCH: REF_EXTRA added
SCOPE_VARFETCH: wrong return value in recursive call fix
SIGNUM: added
SIZE: /STRUCT and SNAME fix
SIZE: assoc variable fix
SORT: COMPARE_FUNCTION added
SORT: COUNT and REVERSE added
WHERE: L64 added
WIDGET_CONTROL: EDITABLE added
WIDGET_CONTROL: SET_LIST_TOP added
WIDGET_INFO: LIST_TOP added
WIDGET_INFO: default return value fix
WIDGET_TEXT: size fix
WINDOW: dummy COLORS added
WRITE_TIFF: DOUBLE, L64 and ORIENTATION added

2015-02-04 FL 0.79.31

assoc variables: numeric structures allowed
format: T, TL and TR added
format: space handling fix
implied PRINT: added
message blocks: added
Windows command line interface: added
!COLOR: W3C named colors added
ARRAY_EQUAL: NOT_EQUAL added
BYTSCL: out of range TOP fix
CLOSE: /ALL fix
CODE_COVERAGE: added
FOREACH: crash fix
GET_SCREEN_SIZE: return type fix
GIF support fix
HASH::_OVERLOADIMPLIEDPRINT: added
HELP: MESSAGES added
IDL_OBJECT::_OVERLOADIMPLIEDPRINT: added
ISA: COMPLEX, FLOAT, INTEGER and STRING added
LIST::_OVERLOADIMPLIEDPRINT: added
MESSAGE: BLOCK and NAME added
MIN / MAX: ABSOLUTE added
MIN / MAX: complex types added
PRODUCT: DOUBLE added
PTR_VALID / OBJ_VALID: CAST fix
PTR_VALID / OBJ_VALID: GET_HEAP_IDENTIFIER added
READ_JPEG: crash fix
ROUTINE_NAMES: FETCH and STORE fix
STRMESSAGE: added
TVCRS: DATA, DEVICE and NORMAL added
TVCRS: T3D and Z added
TVLCT: HLS and HSV added
TVSCL: TOP added
UNIQ: FIRST added
XYOUTS: multiline text fix

2014-08-25 FL 0.79.30

ampersand statement separator fixes
assignment: !NULL fix
foreach: crash fix
format: '$(…)' fix
graphics: !P.TITLE fix
graphics: Z device SET_RESOLUTION fix
keywords: _REF_EXTRA fix
name clash (variable vs function) fix
objects: FOREACH added
objects: method call fix
objects: properties added
CALDAT: crash fix
CALL_*: _EXTRA and _STRICT_EXTRA fix
CALL_FUNCTION: implicit object creation fix
CONVERT_COORD: DOUBLE fix
CONVERT_COORD: result dimension fix
CONVOL: /EDEGE_* out of bounds access fix
CONVOL: MISSING fix
DIALOG_PICKFILE: FILE added
DICTIONARY: FOLD_CASE added
DICTIONARY::GETPROPERTY: added
DICTIONARY::SETPROPERTY: added
EQ/NE: !NULL fix
EQ/NE: undef fix
ERF/ERFC/ERFCX: complex argument added
EXPAND_PATH: filename fix
EXPINT: added
FILE_SEARCH: empty pattern fix
FINDFILE: directory pattern fix
FINDFILE: empty pattern fix
HASH: FOLD_CASE added
HASH::_OVERLOADBRACKETSLEFTSIDE: subclass fix
HASH::_OVERLOADFOREACH: added
HELP: string output fix
IDL_OBJECT::CLEANUP: added
IDL_OBJECT::INIT: added
IDL_OBJECT::_OVERLOADSIZE: return value fix
INDGEN: START and INCREMENT added
ISA: /NULL added
ISA: STRUCT and OBJREF fix
ISA: object fixes
LAGUERRE: added
LIST::ERASE: /ALL fix
LIST::_OVERLOADBRACKETSLEFTSIDE: subclass fix
LIST::_OVERLOADFOREACH: added
MAKE_ARRAY: START and INCREMENT added
MESSAGE: routine name print fix
OPEN*: unit and ERROR fix
ORDEREDHASH: FOLD_CASE added
PLOT: axis range fix
PLOT_IO,_OI,_OO: added
PRODUCT: PRESERVE_TYPE added
RETURN: !NULL fix
SCALE3: added
SIZE: undefined variable fix
SPAWN: EXIT_STATUS fix
STREGEX: pcreposix used in Windows
TOTAL: PRESERVE_TYPE added
TYPENAME: OBJREF fix
XYOUTS: negative CHARSIZE fix

2014-06-24 FL 0.79.29

hash: subscripting crash fix
name clash (variable vs function) fix
operators with string array argument fix
structures: INHERITS tag names check fix
.STEP: added
.STEPOVER: added
-IDL_STARTUP command line option added
__OVERLOADISTRUE fix
CALDAT: added
EXECUTE: empty command fix
GREG2JUL: added
JUL2GREG: added
JULDAY: added
PRINT: empty format fix
PROFILER: /REPORT fix
READ_TIFF: colormapped image fix
RECALL_COMMANDS: added
SORT: complex argument fix
SORT: L64 fix
SPAWN: PID added
SPAWN: STATUS fix
TIC: added
TOC: added
UNIQ: added

2014-05-05 FL 0.79.28

statement separator fix
subscripting: several rare case bugs fixed
AXIS: YNOZERO added
CONVERT_COORDS: single argument fix
DICTIONARY: added
ORDEREDHASH: added
POLYFILL: crash fix

2014-02-17 FL 0.79.27

command line history fix
garbage collection fix
keywords: _REF_EXTRA crash fix
out of memory crash fix
EOF: false negative fix
PRINTF: GUI (units -1 and -2) fix
QHULL: Win64 crash fix
SHADE_SURF: x,y axis position fix
SPAWN: UNIT added (Linux and OS X)
SURFACE: x,y axis position fix
TRIANGULATE: Win64 crash fix
USER_SYM: size, color and line width fix

2013-11-18 FL 0.79.26

bitwise not: pointer and object fix
brackets overload fixes
garbage collection fix
operators: large string operands fix
parser: memory leak fix
ARRAY_EQUAL: single element array fix
CALL_METHOD: crash fix
LIST: rewritten with deque
READ_JPEG: BUFFER, ORDER and UNIT added
STREGEX: rewritten
STRTOK: empty pattern fix
WIDGET_BUTTON: TOOLTIP added
WIDGET_CONTROL: K_TLB_GET_SIZE fix
WIDGET_INFO: FIND_BY_UNAME fix
WIDGET_TEXT: SCROLL added
WIDGET_TEXT: VALUE fix
WRITE_JPEG: ORDER and UNIT added

2013-06-26 FL 0.79.25

dot operator: rewritten
keywords: undefined variable fix
subscripting: hash lhs fix
widgets: empty EVENT_FUN and EVENT_PRO ignored
COLOR_QUAN: crash fix
PLOT: ![XYZ].STYLE fix
PLOT: NOERASE fix
PROFILER: DATA added
PROFILER: FILENAME added
RESOLVE_ALL: search fix
STRTOK: rewritten

2013-05-21 FL 0.79.24

batch files: error recovery fix
concatenation: rewritten
graphics: (dummy) FONT added
graphics: POSITION with /DEVICE fix
graphics: !P.REGION with /DEVICE fix
graphics: [XYZ]LOG with [XYZ]STYLE=1 fix
keywords: undefined variables fix
COLOR_QUAN: added
FZ_ROOTS: added
HELP: CALLS fix
LEGENDRE: negative x fix
MEDIAN: DIMENSION added
PLOT: argument validation fix
PLOT: PSYM=10 fix
POINT_LUN: compressed file fix
RESOLVE_ALL: search fix
ROUTINE_FILEPATH: added
STREGEX: BOOLEAN fix
WRITEU: SWAP fix

2013-04-26 FL 0.79.23

startup file invocation fix
error reporting: line number fix
CONVERT_COORD: crash on scalar input fix
FILE_SEARCH: FULLY_QUALIFY_PATH added
HELP: RECALL_COMMANDS added
MAKE_ARRAY: crash for struct type fix
PATH_CACHE: (dummy) added
STRTOK: crash fix
WIDGET_INFO: MANAGED added

2013-04-18 FL 0.79.22

command line: filename separator fix
command line history: empty lines fix
dot operator: IDL2 fix
operator overloading: brackets overload added (incomplete)
routine calls: minor keyword passing fix
subscripting: minor fixes
I/O: free format separator fix
CONVOL: 3D and higher added
CONVOL: EDGE_* added
CONVOL: NORMALIZE added
EXPAND_PATH: tilde fix
HASH::_OVERLOADBRACKETSLEFTSIDE: added
HASH::_OVERLOADBRACKETSRIGHTSIDE: added
HELP: LEVEL added
IDL_OBJECT::_OVERLOADBRACKETSLEFTSIDE: added
IDL_OBJECT::_OVERLOADBRACKETSRIGHTSIDE: added
INVERT: single element array fix
LA_INVERT: single element array fix
LIST::_OVERLOADBRACKETSLEFTSIDE: added
LIST::_OVERLOADBRACKETSRIGHTSIDE: added
LOADCT: added
READ_TIFF: warning messages suppressed
RESOLVE_ALL: RESOLVE_* added
SPL_INIT: added
SPL_INTERP: added
TVCRS: y coordinate fix
WHERE: Windows XP/32 crash fix
WIDGET_INFO: dummy SYSTEM_COLORS added
WIDGET_TEXT: callback fix

2013-02-28 FL 0.79.21

command line: -e added
commands: .c and .co fix
commands: filename expansion fix
graphics: crash after TVRD fix
graphics: margin fix
graphics: more Hershey fonts added
graphics: vector font drawing rewritten
graphics: !P.MULTI scaling fix
graphics: [XYZ]STYLE=1 tickmarks fix
graphics: [XYZ]TICKS fix
pointers: routine argument passing fix
pointers: reference count fix
subscripting: compound assignment fix
sysvars: valid names fix
I/O: C printf-style format codes added
I/O: line width with FORMAT fix
FILE_BASENAME: rewritten
FILE_DIRNAME: rewritten
FILE_SEARCH: brace expansion added
FSTAT: filename fix
GETENV: /ENVIRONMENT added
GET_LOGIN_INFO: added
OPENW: tilde expansion fix
RANDOM[UN]: BINOMIAL, GAMMA, LONG, POISSON and ULONG added
RANDOM[UN]: rewritten with MT19937
SPAWN: space in %APPDATA% fix
RETURN: trailing shallow dimensions fix
WIDGET_BUTTON: /PUSHBUTTON fix

2013-01-23 FL 0.79.20

command history: empty line fix
command line: file list parsing fix
format: X code fix
graphics: XWIN linestyle fix
graphics: psym scaling fix
graphics: plot symbols rewritten
idle CPU usage fix
operator overload: all (except subscripting and foreach) added
pointers: reference counting fix
pointers: garbage collection fix
subscripting: array subscript fix
CALL_FUNCTION: crash fix
CALL_PROCEDURE: crash fix
CONTOUR: IRREGULAR added
CONTOUR: OVERPLOT with !P.MULTI fix
CONTOUR: TRIANGULATION added
CONVERT_COORDS: arguments size check fix
DEFSYSV: name check fixes
DEVICE: color fix
FILE_COPY: multiple fixes
FILE_MKDIR: added
FILE_MOVE: multiple fixes
GET_LUN: unit assign fix
MESSAGE: REISSUE_LAST added
MOMENT: NAN fix
OPENW: tilde expansion fix
PLOTS: arguments size check fix
RESOLVE_ROUTINE: /EITHER added
STRCOMPRESS: TAB fix
STRING: width fix
WHERE: NCOMPLEMENT fix
WINDOW: erase fix

2012-12-17 FL 0.79.19

dot operator: structure field access fix
object method search: updated
structures: superclass handling rewritten
subscripting: self assignment fix
FFT: minor fixes
FOREACH: rewritten
HASH::COUNT: return type fix
HELP: OBJECTS added
I/O: CR check fix
IDL_CONTAINER: rewritten
LA_LINEAR_EQUATION: single element matrix fix
LA_LUDC: single element matrix fix
LA_LUMPROVE: single element matrix fix
LIST: rewritten as an IDL_CONTAINER subclass
LIST::COUNT: return type fix
NEWTON: added
OS version info: added

2012-10-09 FL 0.79.18

dot operator: method call added (partial)
dot operator: subscripting fixes
float literals: D in exponent fix
method call: inheritance fix
method call: superclass check fix
objects: automatic OBJECT() constructors added
pointers: reference counting updated
thread pool: rewritten
BREAK: allowed as variable name
CDF_OPEN: READONLY added
CONTINUE: allowed as variable name
FFT: rewritten with multithreading added
FOR: index variable handling rewritten
HASH::WHERE: added
LIST::WHERE: added
MOMENT: NAN fix
SMOOTH: dimensions of size one are ignored
_EXTRA: rewritten

2012-05-16 FL 0.79.17

heap variables: reference counting and garbage collection added
logical not: pointer and object fix
subscripting: negative subscripts and strides added
CD: glob fix
CDF_EPOCH: fix
DEFSYSV: fix
FILEPATH: root dir fix
HASH: added
HELP: /DEVICE PS fix
HISTOGRAM: fix
LIST: added
MAKE_DLL: parameter fix
MOMENT: DOUBLE fix
N_ELEMENTS: null object fix
OBJ_DESTROY: updated
OBJ_NEW: updated
POLYFILL: update rectangle added
PROFILER: sort fix
QHULL: added
TRIANGULATE: added
TRIGRID: added
WHERE: COMPLEMENT fix

2012-01-03 FL 0.79.16

labels: accept CONTINUE and BREAK
ARRAY_EQUAL: NO_TYPECONV added
FOR: loop variable end value fix
HDF_SD_ADDDATA: crash fix
HDF_SD_ATTRSET: string attr fix
KURTOSIS: DIMENSION added
MEAN: DIMENSION added
MEANABSDEV: added
MEDIAN: NAN and DOUBLE fix
MOMENT: DIMENSION, KURTOSIS, MEAN, SKEWNESS and VARIANCE added
SKEWNESS: DIMENSION added
STDDEV: DIMENSION added
STRMATCH: pattern character escaping fix
VARIANCE: added

2011-09-27 FL 0.79.15

HISTOGRAM: byte array fix
MEDIAN: return type fix

2011-08-18 FL 0.79.14

subscripts: array insert fix
MAKE_ARRAY: SIZE fix
MEDIAN: type and EVEN fix
NCDF_VARPUT: OFFSET fix
WHERE: rewritten
WIDGET_TABLE: added

2011-06-24 FL 0.79.13

thread pool: updated

2011-06-15 FL 0.79.12

IDLsysMonitorInfo: updated
WIDGET_INFO: FIND_BY_UNAME fix
WIDGET_INFO: GEOMETRY fix

2011-06-3 FL 0.79.11

GET_KBRD: fix
IDLsysMonitorInfo: added
KEYWORD_SET: empty string arg fix
KEY_SET: empty scalar string fix
OPENR: empty filename fix
OPENU: empty filename fix
OPENW: empty filename fix

2011-05-20 FL 0.79.10

graphics: large part rewritten
HDF_SD_CREATE: arg check fix
NCDF_ATTGET: arg check fix
WRITE_PNG: crash fix

2011-05-10 FL 0.79.9

binary integer constants: added
graphics: !P.MULTI fix
graphics: OMARGIN fix
graphics: PS, SVG set_color fix
graphics: X and PS clipping added
graphics: decomposed color fix
subscripting: allow one element arrays in range limits
widgets: event handling rewritten
widgets: style sheet proof-of-concept added
!DTOR: type fix
!ERROR_STATE: CODE and MSG filled
!RADEG: type fix
ARG_PRESENT: return type fix
ARRAY_INDICES: DIMENSIONS added
ARRAY_INDICES: return type fix
ATAN: PHASE added
CALL_EXTERNAL: added
CASE: one-element array fix
CONTOUR: /NOCLIP added
CONTOUR: 2D x and y data fix
CONTOUR: CELL_FILL, FILL, LEVELS and OVERPLOT added
CONTOUR: OVERPLOT fix
CONTOUR: XTHICK and YTHICK added
CONTOUR: filled contour with CONREC
DEFSYSV: EXISTS fix
DEVICE: GET_PIXEL_DEPTH added
DEVICE: SET_PIXEL_DEPTH added
DIALOG_PICKCOLOR: added
ERRORF: added
EXIT: STATUS added
FILE_*: NOEXPAND_PATH fix
FILE_EXPAND_PATH: fix
FILE_MOVE: file move added
FILE_SAME: added
FIX: /PRINT for strings fix
FLE_SEARCH: /NOSORT added
FLE_SEARCH: sort fix
FSTAT: LONG/LONG64 size fix
F_CDF: fix
F_PDF: fix
GET_SCREEN_SIZE: added
HEAP_FREE: recursive object destruction fix
HELP: FILES added
HELP: assoc variable fix
I/O: X format code fix
IBETA: fix
INDGEN: TYPE and type qualifiers added
LABEL_REGION: /EIGHT added
LEGENDRE: fix
MAKE_ARRAY: SIZE fix
MAKE_ARRAY: structure fix
MAKE_DLL: updated
MEAN: single element array fix
MESSAGE: /RESET fix
MESSAGE: RESET fix
OPENR: NOEXPAND_PATH added
OPENU: NOEXPAND_PATH added
OPENW: NOEXPAND_PATH added
OPLOT: /NOCLIP added
PLOT: /NOCLIP added
POLY_2D: crash fix
RANDOMN: /NORMAL and /UNIFORM added
RANDOMU: /NORMAL and /UNIFORM added
READ_JPEG: COLORS, DITHER and TWO_PASS_QUANTIZE added
RETURN: return value copy fix
SCOPE_VARNAME: LEVEL fix
SET_PLOT: COPY and INTERPOLATE added
SIZE: DIMENSIONS return type fix
SIZE: subscript info fix
STRTOK: crash fix
STRTOK: fix
TV: PS and PDF position fix
TVRD: array dimensions fix
WDELETE: multiple arguments fix
WIDGET_BASE: COLUMN and ROW fix
WIDGET_CONTROL: TLB_SET_XOFFSET, TLB_SET_YOFFSET, TLB_GET_OFFSET and TLB_GET_SIZE added
WIDGET_EVENT: rewritten
XMANAGER: rewritten
XYOUTS: Z added
XYOUTS: negative CHARSIZE fix
Z-buffer device: rewritten

2011-01-31 FL 0.79.8

BESELI: /DOUBLE and return value fix
BESELJ: /DOUBLE and return value fix
BESELK: /DOUBLE and return value fix
BESELY: /DOUBLE and return value fix
BETA: /DOUBLE fix
BYTEORDER: big-endian fix
CHISQR_CVF: /DOUBLE fix
CHISQR_PDF: /DOUBLE fix
COMMON: variable names fix
HELP: print compiled routine names for HELP
IGAMMA: /DOUBLE fix
OPENR: F77_UNFORMATTED added
OPENU: F77_UNFORMATTED added
OPENW: F77_UNFORMATTED added
OPLOT: MIN_VALUE and MAX_VALUE added
PLOT: MIN_VALUE and MAX_VALUE added
PRINT: $() compatibility fix
PRINTF: $() compatibility fix
ROUTINE_INFO: /SOURCE fix
TOTAL: /NAN, /COUNT fix
T_CVF: /DOUBLE fix
T_PDF: /DOUBLE fix
XYOUTS: array input fix

2010-12-13 FL 0.79.7

CURSOR: button press fix
SPAWN: empty lines in output fixed
USERSYM: added
WAIT: zero sec fix

2010-10-11 FL 0.79.6

&& and ||: result type fix
BETA: DOUBLE fix
DEFSYSV: EXISTS fix
EXECUTE: error handling fix
FILE_EXPAND_PATH: array input fix
FILE_INFO: array input fix
HELP: NAME added
HELP: fix for recursive routines
IBETA: DOUBLE fix
KEYWORD_SET: return type fix
PRODUCT: INTEGER fix
SCOPE_VARNAME: fix
STRMID: LENGTH fix
TOTAL: INTEGER fix
TVRD: window size fix
WHERE: COMPLEMENT fix
XMANAGER: CATCH added

2010-03-18 FL 0.79.5

$ command: output fix
graphics: rewritten with Qt
widgets: rewritten with Qt
BYTEORDER: fix
CATCH: crash on multiple cancels fix
COLOR_CONVERT: added
COMPLEX: offset fix
DCOMPLEX: offset fix
DEVICE: COPY fix
DIALOG_PICKFONT: added
FILE_SEARCH: EXPAND_TILDE, MATCH_ALL_INITIAL_DOT, MATCH_INITIAL_DOT and MARK_DIRECTORY added
FILE_SEARCH: no input parameter fix
HELP: <PtrHeapVar*> instead of <expr>
HELP: replace tab with spaces in output
PLOTS: input fix
PRINT: empty format fix
PRINTF: empty format fix
READS: non-string input fix
SPAWN: output fix
STRMID: /REVERSE_OFFSET fix
STRPOS: /REVERSE_OFFSET fix
SYSTIME: /JULIAN /UTC fix
XREGISTERED: added

2009-09-03 FL 0.79a

keywords with non-zero default value fix

2009-08-28 FL 0.79

integer limit check fix
logical not: string operand fix
unary '-': string operand fix
I/O: format fixes
I/O: B format code added
COPY_LUN: added
CREATE_STRUCT: tag name check fix
FILE_EXPAND_PATH: added
HELP: /DEVICE added
IDL_VALIDNAME: fix
MAKE_ARRAY: object array fix
NCDF_ATTCOPY: return value fix
OBJ_HASMETHOD: added
PLOTS: coord. system setup fix
STRMID: REVERSE_OFFSET fix
T3D: OBLIQUE, PERSPECTIVE, XYEXCH, XZEXCH and YZEXCH added
TRUNCATE_LUN: added
WIDGET_BASE: TITLE added
WIDGET_DRAW: fix
WRITE_TIFF: YRESOL fix

2009-08-04 FL 0.78

scalar subscripting fixes
I/O: zero-padding fix
!PATH handling (compatibility) fix
_STRICT_EXTRA fix
INTERPOLATE: CUBIC fix
INTERPOLATE: threads added
HELP: BRIEF and FULL added
IDL_CONTAINER object: added
IDL_CONTAINER::ADD: added
IDL_CONTAINER::CLEANUP: added
IDL_CONTAINER::GET: added
IDL_CONTAINER::INIT: added
IDL_CONTAINER::ISCONTAINED: added
IDL_CONTAINER::MOVE: added
IDL_CONTAINER::REMOVE: added
NCDF_VARINQ: datatype fix
OBJ_DESTROY: array input fix
POLY_2D: CUBIC added
POLY_2D: threads added
REBIN: crash fix
SCOPE_TRACEBACK: /STRUCT fix
SHIFT: single element array fix
STRSPLIT: COUNT, LENGTH and PRESERVE_NULL added
STRUCT_ASSIGN: single element array fix
STRUCT_HIDE: added
VALUE_LOCATE: threads added

2009-07-07 FL 0.77

HELP: /STRUCT fix
NCDF_ATTCOPY: added
NCDF_ATTDEL: added
NCDF_ATTGET: added
NCDF_ATTINQ: added
NCDF_ATTNAME: added
NCDF_ATTPUT: added
NCDF_ATTRENAME: added
NCDF_CLOSE: added
NCDF_CONTROL: added
NCDF_CREATE: added
NCDF_DIMDEF: added
NCDF_DIMID: added
NCDF_DIMINQ: added
NCDF_DIMRENAME: added
NCDF_EXISTS: added
NCDF_INQUIRE: added
NCDF_OPEN: added
NCDF_VARDEF: added
NCDF_VARGET1: added
NCDF_VARGET: added
NCDF_VARID: added
NCDF_VARINQ: added
NCDF_VARPUT: added
NCDF_VARRENAME: added

2009-06-10 FL 0.76

I/O: printing strings with I,F format codes fix
ON_IOERROR: handle conversion errors
DEVICE: GET_WINDOW_POSITION added
DIALOG_MESSAGE: added
HDF_EXISTS: added
HDF_IDL2HDFTYPE: added
HDF_ISHDF: added
HDF_LIB_INFO: added
HDF_SD_ADDDATA: added
HDF_SD_ATTRFIND: added
HDF_SD_ATTRINFO: added
HDF_SD_ATTRSET: added
HDF_SD_CREATE: added
HDF_SD_DIMGET: added
HDF_SD_DIMGETID: added
HDF_SD_DIMSET: added
HDF_SD_ENDACCESS: added
HDF_SD_END: added
HDF_SD_FILEINFO: added
HDF_SD_GETDATA: added
HDF_SD_GETINFO: added
HDF_SD_IDTOREF: added
HDF_SD_ISCOORDVAR: added
HDF_SD_NAMETOINDEX: added
HDF_SD_REFTOINDEX: added
HDF_SD_SELECT: added
HDF_SD_SETCOMPRESS: added
HDF_SD_SETEXTFILE: added
HDF_SD_SETINFO: added
HDF_SD_START: added
IDL_VALIDNAME: added
SKIP_LUN: added

2009-03-02 FL 0.75

Mac OS X x86 port
expiration time removed

2009-02-10 FL 0.74

reserved words fix
structures in structures fix
variable subscripting / function call ambiguity fix
CDF_ATTCREATE: added
CDF_ATTDELETE: added
CDF_ATTEXISTS: added
CDF_ATTGET: added
CDF_ATTINQ: added
CDF_ATTNUM: added
CDF_ATTPUT: added
CDF_ATTRENAME: added
CDF_CLOSE: added
CDF_COMPRESSION: added
CDF_CONTROL: added
CDF_CREATE: added
CDF_DELETE: added
CDF_DOC: added
CDF_ENCODE_EPOCH16: added
CDF_ENCODE_EPOCH: added
CDF_EPOCH16: added
CDF_EPOCH: added
CDF_EPOCH_COMPARE: added
CDF_EPOCH_DIFF: added
CDF_ERROR: added
CDF_EXISTS: added
CDF_INQUIRE: added
CDFLIB: added
CDFLIB_H.PL
CDF_LIB_INFO: added
CDF_OPEN: added
CDF_PARSE_EPOCH16: added
CDF_PARSE_EPOCH: added
CDF_SET_CDF27_BACKWARD_COMPATIBLE: added
CDF_VARCREATE: added
CDF_VARDELETE: added
CDF_VARGET1: added
CDF_VARGET: added
CDF_VARINQ: added
CDF_VARNUM: added
WHERE: allow non-numeric types

2008-12-17 FL 0.73

error message printing fix
I/O: end of input detection fix
subscripting fixes
BYTEORDER: SWAP_IF_BIG_ENDIAN, SWAP_IF_LITTLE_ENDIAN added
BYTEORDER: HTONL, HTONS, NTOHL, NTOHS added
CHOLDC: added (wrapper for LA_CHOLDC)
CHOLSOL: added (wrapper for LA_CHOLSOL)
COMPLEX: crash fix
CONTOUR: ZVALUE fix
DCOMPLEX: crash fix
DETERM: added (alias for LA_DETERM)
ELMHES: added (wrapper for LA_ELMHES)
FINITE: fix for huge double numbers
HELP: aliases marked in /LIB
HELP: variable listing fix
HQR: added (alias for LA_HQR)
LA_CHOLDC: rewritten
LA_CHOLMPROVE: added
LA_CHOLSOL: added
LA_DETERM: rewritten
LA_EIGENPROBLEM: rewritten
LA_EIGENQL: added
LA_EIGENVEC: added
LA_ELMHES: added
LA_GM_LINEAR_MODEL: added
LA_HQR: added
LA_INVERT: rewritten
LA_LEAST_SQUARE_EQUALITY: added
LA_LEAST_SQUARES: added
LA_LINEAR_EQUATION: rewritten
LA_LUDC: rewritten
LA_LUMPROVE: added
LA_LUSOL: rewritten
LA_SVD: rewritten
LA_TRIDC: added
LA_TRIMPROVE: added
LA_TRIQL: added
LA_TRIRED: added
LA_TRISOL: added
LUDC: added (alias for LA_LUDC)
LUMPROVE: added (alias for LA_LUMPROVE)
LUSOL: added (alias for LA_LUSOL)
RANDOMN: /DOUBLE added
RANDOMU: /DOUBLE added
SCOPE_VARNAME: COUNT fix
SVDC: added (alias for LA_SVD)
SVSOL: added
TRIQL: added (wrapper for LA_TRIQL)
TRIRED: added (wrapper for LA_TRIRED)
TRISOL: added

2008-09-09 FL 0.72

fix crash if X11 display can not be opened
JOURNAL: missing comment characters fix
32 bit DLM creation on 64 bit system fix
do RETALL before recompiling active routine
I/O: trailing spaces fix
I/O: sign printing for Inf fix
CPU: fix recently introduced bug
SUN Solaris/x86 port
SUN Solaris/amd64 port
SUN Solaris/SPARC port
SUN Solaris/SPARC64 port

2008-08-08 FL 0.71

DLM support added
MAKE_DLL: added
object CLEANUP method call fix
OBJ_NEW: keywords fix
OBJ_DESTROY: keywords fix
STDDEV: fix missing square root
HEAP_GC: rewritten
READ_TIFF: IMAGE_INDEX added
ROUTINE_INFO: SOURCE fix
WINDOW: erase on resize fix

2008-05-19 FL 0.70o

breakpoint handling fix for Windows
LABEL_REGION: crash fix (out of stack memory)

2008-05-16 FL 0.70n

breakpoint handling fix
graphics: SYMSIZE fix
run startup file after reset
structure array subscripting fix
GUI output: missing newlines fixed
GET_KBRD added
JOURNAL: missing newlines fixed
LABEL_REGION added
MEAN: fix

2008-03-28 FL 0.70m

matrix mul fix
struct array subscripting fix
unary +/ - precedence fix
last error message fix
MIN/MAX: multithreaded
SINDGEN: fix in 64 bit version
TV/TVSCL: accept 1D array
TV/TVSCL: CHANNEL added
TVRD: CHANNEL added

2007-12-27 FL 0.70l

SSE2 integer ops instead of MMX
MIN/MAX: DIMENSION added
MIN/MAX: !C filled

2007-11-12 FL 0.70k

fix graphics crash introduced in 0.70j :-(

2007-10-31 FL 0.70j

EQ/NE: fix for 64 integers, complex and structures
TV/TVSCL: position index added
subscripting fix
various fixes for the 64 bit version

2007-10-16 FL 0.70i

EQ op: empty string is equal to zero
graphics: do not report undefined keyword values
I/O functions: TRANSFER_COUNT added
superclass method call fix
DEVICE: WINDOW_STATE added
FSTAT: CUR_PTR filled
FSTAT: TRANSFER_COUNT filled
TAG_NAMES: return empty string for anon structure name

2007-09-30 FL 0.70h

_EXTRA and _REF_EXTRA: fix
functions: return 0 at end
objref comparison fix
structure assignment fix
subscripting fixes
typename OBJECT replaced by OBJREF
CATCH: fix
CREATE_STRUCTURE: fix
HEAP_FREE: fix
HEAP_GC: fix
N_TAGS: accept undefined input
PTR_VALID: fix
OBJ_DESTROY: fix
OBJ_VALID: fix
READS: accept array input
SCOPE_VARFETCH: fix
SIZE: report structures as arrays
XYOUTS: WIDTH added

2007-09-13 FL 0.70g

':' format fix
subscripting fixes
structure concatenation fix
FILE_SEARCH: fix
POINT_LUN: fix for compressed input file
REPLICATE_INPLACE: scalar and string input

2007-09-05 FL 0.70f

string array expressions fix
ROUTINE_INFO: fix
I/O: extra newline fix

2007-08-31 FL 0.70e

keyword handling fix
object creation fix
structure initialization fix
system variables: no compile-time check
CHECK_MATH: silently ignore arguments
EXECUTE: variable lookup fix
EXPAND_PATH: handle empty and non-existent dirs
HELP: CALLS added
N_PARAMS: do not count self
N_PARAMS: silently ignore arguments
N_TAGS: fix
OBJARR: initialization fix
OBJ_CLASS: fix
OBJ_VALID: fix
PTR_VALID: fix
REFORM: fix for structures
RESOLVE_ALL: fix
SORT: fix for strings
STRCOMPRESS: fix
TAG_NAMES: fix

2007-08-16 FL 0.70d

string comparison fix
subscripting fixes
automatic compilation fix
empty strings are converted to zero
graphics: NULL device added
IDL_PATH and IDL_STARTUP read on startup
!IDENTIFIER accepted as struct or tag name
DEFSYSV: fix
DEVICE: GET_SCREEN_SIZE added
FILE_CHMOD: added
FILE_DELETE: added (for files only)
FILE_TEST: added
FINDFILE: added (alias for FILE_SEARCH)
HEAP_FREE: added
HEAP_GC: added
HELP: HEAP_VARIABLES added
N_TAGS: array accepted
OPENU/OPENW: APPEND added
PTR_NEW: fix
RANDOMN: no 0 or 1 result
REFORM: dimension fix
ROUTINE_NAMES: added
SPAWN: fix
STREGEX: empty substring fix
STRMID: empty substring fix
TAG_NAMES: array accepted

2007-07-13 FL 0.70c

minimum and maximum operator fix
MMX 16 bit signed integer fix
array subscripting fix
OPENU/OPENW: WIDTH keyword added
TOTAL: /NaN fix

2007-07-04 FL 0.70b

subscripting bug fixes
STOP fix
SYSTIME second argument added
WHERE complement fix
.SKIP and .CONTINUE fix

2007-06-15 FL 0.70a

DFL bug fix

2007-06-14 FL 0.70

Distributed FL
subscripting bug fixes
DIV to MUL conversion fix
Ctrl-C user interrupt
Nan and Inf print fixes

2007-04-27 FL 0.61

OBJ_DESTROY: arrays accepted
HELP: crash on invalid objexts fix
many small fixes

2007-01-08 FL 0.60m

SQRT: speedup
FFT: crash fix
ERASE: color fix
graphics: tickmarks fix
graphics: erase for Z added
JOURNAL: GUI mode output fix
delayed X open display
bitwise AND and OR for strings

2006-11-23 FL 0.60l

subscripting fixes
concatenation fix
byte array to string conversion fix
_EXTRA priority fix
BYTSCL fix
CURSOR: wait condition fix
DEVICE: COPY added (X only)
DEVICE: GET_VISUAL_DEPTH, GET_VISUAL_NAME added
DEVICE: [GS]ET_GRAPHICS_FUNCTION added (X only)
FILE_SEARCH: COUNT added
graphics: CHARSIZE fix
graphics: TICKFORMAT (format only) added
graphics: TICKLEN, GRIDSTYLE added
graphics: TICKS, TICKV, TICKNAME added
graphics: better linestyle for X, WIN
MEDIAN: return scalar if no size is given
PLOTS: PSYM added
RANDOMU/N: return scalar if no array dimensions are given
TV, TVSCL: /NORMAL fix
WINDOW: positioning fix
WINDOW: PIXMAP added (X only)
WINDOW: TITLE added

2006-10-19 FL 0.60k

FRRE_LUN for closed file fix
TV for huge images fix
recursion for + in !PATH fix
2 digit exponnet for float on Windows fix
command line .pro files fix

2006-08-31 FL 0.60j

new sysfun: CONVERT_COORD
string array comparison fix
array subscript fix
structure indexing fix
power (x^0) fix
graphics: descending range fix
format: I0 fix
BYTE fix
BYTSCL fix
INTERPOLATE: trilinear added
CONVOL, SMOOTH: integer overflow fix
REBIN: interpolation added
TV, TVSCL: ignore extra dimensions of size 1
XYOUTS: alignment added
XYOUTS: convert non-string to string
!X[YZ].CRANGE fix
!X[YZ].S fix

2006-08-21 FL 0.60i

new sysfun: COMMAND_LINE_ARGS
new sysfun: DIAG_MATRIX
new sysfun: FILE_LINES
new sysfun: INTERPOLATE
new sysfun: POLY_2D
new sysfun: ROBERTS
new sysfun: SOBEL
new sysfun: VALUE_LOCATE
new syspro: SPAWN
MEDIAN: 2D added
TVSCL: divide by zero fixed
last element operator fix

2006-08-03 FL 0.60h

include INF checks for /NAN
power fix
NAN/INF test for complex numbers fix
SMOOTH: /NAN, /EDGE added
.RESET_SESSION added

2006-07-19 FL 0.60g

HISTOGRAM: range check fix
HISTOGRAM: nbins=1 crash fix
power: negativ exponent fix
WINDOW: /free added
PLOT/OPLOT: NAN check added
OPLOT: same PSYMS as for PLOT

2006-07-16 FL 0.60f

range subscript fix
HISTOGRAM: fix value to bin calculation
SORT: fix bug when result is equal to input

2006-07-13 FL 0.60e

main widget close fix
session close fix
GUI input 100% CPU usage fix

2006-06-28 FL 0.60d

multiline string
keyword check for system routines at compile time
negative PSYM values added
END type check disabled

2006-04-24 FL 0.60c

ERROR keyword for OPEN

2006-04-10 FL 0.60b

window backing store
LA_INVERT fix
INVERT status fix

2006-04-06 FL 0.60a

struct field access memory leak fix
file_search tests
'+' modifier in !PATH (and path cache)
A0 format fix