Fixed a crash while handling nested lists. Implemented RE, IM, and CONJ. 0=? and 0≠? now accept complex numbers, real and complex matrices, and lists. X=? and X≠? now consider a and a+0i to be equal. Note that these changes do not apply to X=0?, X≠0?, X=Y?, and X≠Y?, for the sake of HP-42S compatibility. Be sure to check the Plus42 web site for the 1.5 release notes as well.

It is now possible to make shifted assignments in the programmable menu and in CUSTOM. It is now possible to use a list for REGS, instead of a matrix. With a list in REGS, the numbered registers can hold all types of data. Many built-in functions can now be applied to lists, causing them to operate on the elements of the list one by one. See the Free42 web site for details. Implemented SORT function. It sorts lists. See the Free42 web site for details. PRV and PRX now handle nested lists, and matrices inside lists. Better list display in the upper stack levels and in SHOW. Implemented PARAMS function. Given a global LBL name, or an equation object, it returns a list containing all the associated parameters.

PRTRACE fixes and improvements.

Implemented try/catch style error handling: TRY, TRYX, CATCH?, PRTRACE. See the Free42 web site for details. RTNERR and RAISE support five additional error numbers; see the Free42 web site for details. Keyboard mapping now uses a platform-independent syntax. The existing keymap.txt is renamed to keymap.old, and a new keymap.txt is created, using the new syntax. All the skins in the Plus42 skins collection that contain keyboard mappings have been updated to take advantage of the new syntax, but the old syntax is also still supported, but only in skins, not in keymap.txt. Direct XEQ mapping: Skins can now define macros that perform an XEQ that works regardless of which menu is active, using the syntax `FOO` to perform XEQ "FOO". Implemented MENU1: This works just like MENU, i.e. it opens the Programmable Menu, except MENU1 opens the menu as an application menu, rather than as a regular menu. This means that MENU1 allows users to interact with command menus without losing their place in the programmable menu. Flag 33 is now automatically cleared whenever a non-programmable-menu key is pressed. This can be used to implement VARMENU-like behavior using the programmable menu. Implemented IP→S, a function that converts the integer part of a number to a string, like AIP, except the string is placed in the X register, not ALPHA. Fixed NORM/TRACE output for programmable menu. Added keyboard shortcut for Show Print-Out. Windows and MacOS versions: When a skin is selected that is too large to fit on the screen, it is now automatically scaled down to fit, while preserving its aspect ratio.

Fixed RLN and RRN for negative numbers in BSIGNED mode.

Fixed crash in REFMOVE. More accurate GAMMA for integer arguments.

Fixed potential crash in VARMENU.

Fixed crash in menu logic.

Fixed crash in EQN->R/S when EQNS does not yet exist. When a new program was created by inserting END, the new program could end up being locked initially. Fixed.

Fixed a couple of rare crashes.

Applying units in PRGM mode didn't work when the RPN stack was empty. Fixed.

Fixed potential crash on app restart.

Fix for unreliable state file saving.

Now hiding shadowed labels from MVAR catalogs. Fix for certain rare crashes.

Better handling of ACC=0 in INTEG. More accurate C.E^X-1.

Fixed a couple of equation editor bugs.

Fixed handling of shared matrices in PUTMI. Fixed handling of subnormal complex numbers in 1/X. Added SLN, SRN, and ASRN to CATALOG->BASE. Added current base to the BASE mode status indicators, and made the indicators more compact. Fixed skin key highlighting for hardware keyboard keystrokes, when using certain skins with complicated key mappings. Fixed potential crash when loading state.

BASE menu: Implemented SLN, SRN, and ASRN. These functions are can be typed as Shift-SL, Shift-SR, and Shift-ASR, respectively, and RJ can now be typed as Shift-LJ. More accurate DET, INVRT, and matrix division for 2x2 matrices. When spelling out built-in function names, '-' is now accepted as an alternative for '→', to make conversion functions easier to type. Menu keys that execute different functions when pressed with Shift now show their alternate function while Shift is active. (This behavior can be disabled and enabled using the new STATIC and DYNAMIC settings in the new MENUS submenu of the MODES menu.) Decimal version: BS→N and BD→N were rounding their results to 16 digits. Fixed.

(1.3) BASE enhancements: shift and rotate functions, bit manipulation functions, floating-point conversions, and optional digit grouping. See the Free42 web site for all the details. (1.3.1) BASE: Fixed DECINT behavior for -2^(WSIZE-1). (1.3.2) RLN, RRN, RLCN, and RRCN did not drop the stack. Fixed. (1.3.2) Fixed a couple of bugs in the equation editor.

BASE enhancements: shift and rotate functions, bit manipulation functions, floating-point conversions, and optional digit grouping. See the Free42 web site for all the details. (1.3.1) BASE: Fixed DECINT behavior for -2^(WSIZE-1).

BASE enhancements: shift and rotate functions, bit manipulation functions, floating-point conversions, and optional digit grouping. See the Free42 web site for all the details.

NEWEQN and EDITEQN functions (EQN.FCN menu). These create or edit equations and strings in place, in the stack and in programs, without needing to go through EQN mode. Moved equation settings from MODES to EQN.FCN, and moved BASE settings from MODES to BASE, to make them easier to find and to declutter the MODES menu. (1.2.8a) Fixed pop-up keyboard behavior with dialogs in the equation editor.

NEWEQN and EDITEQN functions (EQN.FCN menu). These create or edit equations and strings in place, in the stack and in programs, without needing to go through EQN mode. Moved equation settings from MODES to EQN.FCN, and moved BASE settings from MODES to BASE, to make them easier to find and to declutter the MODES menu.

Fixed crash in RCOMPLX/PCOMPLX when the stack is empty (NSTK mode). More accurate integer powers of complex numbers. Specifically: special cases for pure real, pure imaginary, and numbers of the form a+ai and a-ai. Fixed VIEW for long values. Added XSTR option for EQN→STO→X and EQN→STO→PRGM. The file selector wasn't sorting the directory listing. Fixed.

Fixed crash when saving an equation without having modified it. This bug was introduced in the previous release. Improvements in error handling when evaluating equations.