Maxima 5.46 change log

New items in core:

• Added eval_string_lisp to read in and evaluate lisp forms from a string
• Maxima compiled with ABCL can use network connections (option "-s"),
  which is used by frontends like Xmaxima and wxMaxima.
• Added gnuplot_send to open a Gnuplot pipe and send a command to it.
• new code to commute conjugate of derivative (Commit [565fcf]).
• new plot option window. It can be used to send the plot to a window
  different from the default 0 window.

New items in share:

• new package quantum_computing: a simulator of quantum computing
  circuits.
• new package test_batch_encodings: tests for batch and batchload with different character encodings
• new file conics_04.mac: intersections of conic sections
• package distrib: implementation of inverse gamma distribution
• package stringproc: extend the range of recognized encodings somewhat
• package numericalio: extend function md5sum to accept binary input stream
• package numericalio: recognize 1-element strings as equivalent to symbols for separators
• package gentran: update to new version contributed by Michael Stern

Changes in core:

• plot2d, plot3d, mandelbrot and julia now use gnuplot_pipes by default
  in all operating systems and in all cases (plot shown on the screen or
  saved to a graphics file). No temporary files are used.
• option gnuplot_strings made more consistent in different terminals.
• option gnuplot_script_file now accepts complete path file names.

Changes in share:

• draw: Restored the default gnuplot_pipes format (Commit [a54f2f])
• draw: Restores the window, font and size options for default
  terminal (Commit [096f0b])

Changes in Xmaxima:

• fix to allow several plotdf windows to work independently by refreshing
  the expressions of the derivatives every time a new trajectory is plotted.

Changes in the Windows installer:

• Update SBCL, wxMaxima, TCL/TK.
  A newer Gnuplot version is available, but causes problems when using
  pipes on Windows, therefore that was not updated.
• Use the HTML manual (not the PDF version) in the start menu.
• Strip included C programs (saves some space).
• The command line option "--userdir" did not work on Windows, fixed that.

Bug fixes for numbered bugs:

• #380: algsys ab=cd grossly incomplete
• #484: limit(x=0,x,0) wrong
• #926: sign errors in cartan package
• #1097: pattern variable appears in letsimp result
• #1848: taytorat leaks internal gensyms from multivar expansions
• #2247: not plotting from Vista, probably due to national characters
• #2388: wrong limit
• #2446: horner of multivariate taylor gives junk
• #2709: letsimp' is wrong ifratexpand' is called
• #2837: ev causes bogus WNA checks for sum, product, define and ":"
• #2876: Error simplifying infix operators declared l/rassociative
• #2921: errcatch fails to catch various errors
• #2953: limit loops endlessly
• #3068: taylor of CRE fails
• #3159: plot3d in Windows not recognizing plot option color
• #3453: Mesh Lines Bugged | Cannot Change Their Color from Default
• #3462: simplify_sum() variable name clash
• #3483: limit apparently causes infinite loop
• #3520: "Directory does not exist" errors on Windows 10
• #3542: Unable to display second plot until first one is closed
• #3605: Variable confusion in function handling Taylor series
• #3654: uniteigenvectors fails if uv[1] is used in the user main program
• #3656: Update builtins-list.txt
• #3718: incorrect trigonometric definite integral
• #3736: Quoting either min or max inhibits simplification
• #3764: limit of min works with assume but not with asksign
• #3765: min(und,...) gives error with trylevel > 1
• #3769: max or min called on CRE expressions
• #3789: package ezunits: ev(dimensions(u), nouns) stack overflow
• #3793: plot2d fails on small x-range
• #3796: plot3d doesn't support rotation in 5.45
• #3797: plot2d(0, ...) gives "can't plot with empty y range" -- regression
• #3801: error sourcing .xmaximarc on Windows
• #3805: plot2d should give a clean user error for undefined functions
• #3807: plot2d heuristic to detect unbound variables excludes valid cases
• #3810: integrate error "not of type FIXNUM" for integrand with floats in it
• #3819: Implicit plot2d calculating 1/0 gives Lisp error
• #3820: testsuite with display_all = true
• #3825: apply('forget, facts()) gives Lisp error
• #3826: limit returns temp variable expression
• #3838: limit(atan(sin(x)),x,inf,plus) --> atan(ind)
• #3844: Wrong limit involving gamma function
• #3881: plot2d not ignoring errors within functions
• #3883: plot creates invalid gnuplot command
• #3893: display2d and long numbers
• #3907: gnuplot_postamble not actually the last Gnuplot output before plot
• #3910: correct 'an Unicode' in doc/info/stringproc.texi
• #3921: Expanded subtracted from unexpanded with e^ix does not integrate to zero
• #3925: Maxima help button opens "file not found"
• #3934: expand(1/(1+%i)^4) => (-4)^(-1) (unsimplified)
• #3935: Noncommutative multiplication with string argument triggers "declare: argument must be a symbol"
• #3936: plot2d sends invalid file to gnuplot
• #3945: 'props' isn't empty at startup
• #3950: letsimp confuses symbols and nullary applications
• #3951: screen terminal no longer works as described in docs
• #3952: plot2d clipping warnings not appearing
• #3953: Pressing q necessary to continue when plot2d output to svg
• #3956: expand(1/((sqrt(2)-1)*(sqrt(2)+1))) => 1/1 (unsimplified)
• #3958: plot2d with multiple discrete plots fails
• #3959: plot2d + Gnuplot 4 with plot title noenhanced

Unnumbered bugs fixed:

• (x^^-1) . x simplified to 1 instead of dotident (commit [c8d115d])
• Adjust derivatives of beta_incomplete and friends (commit [ad682b0])
• mailing list 2022-01-04: Bad vect package? (commit [c6110df])
• mailing list 2021-06-27: ev(xxx,pred) vs is(xxx) (commit [37206b8])
• Stackoverflow: (wx)Maxima: texput for powers of expressions (commit [4e65bc3])
• Stackoverflow: How to plot a bode_gain inside the wxmaxima GUI? (commit [6bee3ca])

Documentation:

• Examples in the introduction to strings (Data Types and Structures chapter)
  fixed.
• New build scripts in Lisp, Python is no longer needed to build the documentation
• Update japanese documentation
• New configuration options --enable-lang-ru and --enable-lang-ja for building
  japanese and russian documentation
• New configuration option --enable-build-docs (default = yes) to make it
  possible to omit building documentation
• Documentation is only produced in UTF-8 encoding and no other encoding
• Expunge build and runtime machinery for doc/info/<lang>.utf8</lang>
• Remove configuration options --enable-lang-<lang>-utf8</lang>
• Fix building PDF documentation for non-english languages. Use xeTeX
  make pdf PDFTEX=xetex
  to build Japanese and Russian PDFs.

Build system:

• Many improvements wrt out-of-tree-builds and translations of the manual