usr/src/contrib/sc/CHANGES

CHANGES BETWEEN 6.1 and 6.7

Dave Lewis -
        Found and fixed a null pointer derefrece in the 'R' command.

Rob McMahon -
        Changed the ctl() macro to work with ANSI style compilers.
        Cleaned up some non-readonly text problems.

Rick Linck -
        Fixed a bug in lex.c - Ann Arbor Ambassadors have long ks and ke
        termcap entries.

Sam Drake -
        A fix for undefined C_* symbols in AIX.

Peter Brower -
        Cleaned up the INTERNATIONAL ifdefs with more portable code.

Glen Ditchfield
        Cleaned up a problem in crypt.c when the encrypted file shrank.

Bob Bond -
        Vi style editing for the command line.
        A bug in range name aliases.

Jeff Buhrt -
        -Added "~" filename expansion.
        -702 columns (A-ZZ) and unlimited rows/cells based on max. memory
        -fixed a few bugs
        -slightly decreased CPU usage
        -MAKES backup copies of files
        -understands ~$HOME stuff

CHANGES BETWEEN 5.1 and 6.1:

Andy Valencia -
        xmalloc aligns data to a double boundary.

Lawrence Cipriani -
        Fixed a bug in the "do you want to save this" sequence.

Soren Lundsgaard -
        A null pointer derefrence.

Rick Perry -
        Cleaned up a problem with modchk() in sc.c.

Gregory Bond -
        Added code for multi argument versions of @min and @max.

Tad Mannes -
        Added code to save/restore hidden rows and columns when the
        data base is saved or restored.

Marius Olafsson -
        INTERNATIONAL changes.  Allows full 8 bit characters (if
        curses supports them.)

Kurt Horton -
        Added support for @pv, @fv and @pmt financial functins.
        Tested lots of different systems, linting.

John Campbell -
        Support for VMS.  See VMS_NOTES.

Peter King -
         User selection of row or column order for recalculation.
                Also affects order of traversing regions in /f and /r
         User setting of automatic or manual recalculation.
         User setting of number of times to try recalculation.
         + and - commands when in non-numeric mode to do
                increment and decrement operations.
        @index, @stindex, @atan2, @lookup  functions.
        Save/restore options.
        Support for TeX, LaTeX, and better support for tbl in "T" cmd.
        Provision of a copyent function to copy entries (same code repeated
                in several locations)
        Forwrow, backrow, forwcol, backcol functions to replace
                repeated code
        Correct interpretation of ESCAPE or ^G as an abort when in a
                two character command such as 'ar' or 'ac'
        Cleanup in eval() - catches non-trap function errors.

Bob Bond -
       Added search options to "g".
       Added supression of hidden columns to "W"
       Added the mod operator "%"
       New help functions.
       Constant prescale "$"
       Added string matching to @lookup.
       Some more bug fixes.
       Testing, integration, documentation.

Alan Silverstein-
        Greatly revised the manual entry.
        Added menus for ^E command and row/column commands, which
        involved a bunch of code cleanup.

        Changed top row display to clearly indicate string labels
        versus number parts, and to distinguish string functions from
        constant labels.

        When the character cursor is on a cell (not topline), ^H
        (backspace) is like ^B (move back one cell), rather than being
        ignored.

        When the character cursor is on a cell (not topline), ^I (tab)
        is like ^F (move forward one cell), rather than being ignored.
        ^R is no longer identical with ^L.  Now ^R highlights all cells
        which should be entered by a user because they contain constant
        numeric values (not the result of a numeric expression).

        Added a ^X command, similar to ^R, which highlights cells which
        have expressions.  It also displays the expressions in the
        highlighted cells as left-justified strings, instead of the
        label and/or value of the cell.

        Added indirection functions (@nval() and @sval()) for simple
        table lookups.  Given a column name and row number, they return
        the numeric or string value of the selected cell.

        Added external functions (@ext()) for non-trivial
        computations.  Given a command name and argument, it calls the
        command and reads back one output line.

        Added a ^T,e command to toggle enabling of external functions.

        Changed ^T,t to only control the top line display, and added
        ^T,c to control current cell highlighting.  (Separated the
        functions.)

        "!" (shell escape) gives a vi-style warning if there were any
        changes since the last write.  (No change to manual entry.)

        Fixed some startup, error, and prompt messages to be cleaner
        and/or more consistent.  (No changes to manual entry.)

        Fixed a bug:  If @substr() upper bound (third parameter) is
        past the end of the string operand, return the substring
        through the end of the string, rather than returning a null
        string.

        Fixed a bug:  Reset SIGINT to default after forking before
        calling shell escape program and before starting pipeline (for
        commands which support this).  Didn't reset SIGINT before
        calling crypt and external functions because in both cases it
        should be irrelevant.  (No change to manual entry.)

CHANGES BETWEEN 6.1 and 6.2:


Chris Cole-
        Compatibility with Lotus 1-2-3
                a) @hlookup(expr,range,expr)
                b) @vlookup(expr,range,expr)
                c) @round(expr,expr)
                d) @if(expr,expr,expr)
                e) @abs(expr)