Version 6.8.0, 2019-11-15
Allow for negative curvatures.
Version 6.5.4, 2014-07-19
Fix configure.ac and edit.c to allow use of libedit.
Version 6.5.3, 2014-04-22
To satisfy Coverity: more secure tmpfile creation,
check two return values
Version 6.5.2, 2013-10-11
Correct a bug in undoing a mini or text edit.
Replaced trailing pointers by pointers-to-pointers.
Version 6.5.1, 2012-05-24
Use editline if available; readline otherwise.
(editline emulation of readline is broken)
Version 6.5.0, 2012-05-13
Revert to readline (available in gnuwin32 repository).
Remove references to chmod and /dev/null.
Version 6.4.2, 2012-04-18
Revert to editline using native libedit.so.
Version 6.4.1, 2012-04-17
Revert to readline (libedit doesn't build on Cygwin).
Version 6.4.0, 2012-04-12
Switch from (system) readline to (embedded) editline (libedit).
Version 6.3.2, 2012-03-28
Support coordinate ranges for delete, shift, raise commands.
Multiple-step commands undone atomically.
Version 6.3.1, 2012-03-26
Support xchange command.
Display new coordinates of shifted/raised nodes for subsequent raise/shift.
Version 6.3, 2012-03-21
Support opt course boxes.
Version 6.2.1, 2012-03-18
Allow multiple coordinate pairs in cut command.
Version 6.2, 2011-09-08
Replace undelete command by a general multi-level undo command.
Default for undoing paste command is to re-insert at the original coordinates.
Version 6.1.1, 2011-08-20
Fixed missing else which resulted in re-reading ...coursec commands.
Better prompt for background color of a course box.
Better error message if more than one node at a point.
Version 6.1.0, 2011-08-18
Deal with commands \halfcoursec etc. that allow background-color
specification.
Version 6.0.4, 2011-07-27
Deleted prerex_LDFLAGS from src/Makefile.am.
Version 6.0.3, 2010-07-04
Use only one of ncurses/termcap.
Version 6.0.2, 2010-06-29
Deleted reference to stdbool.h.
Modified configuration scripts to allow for readline using ncurses/termcap.
Version 6.0.1, 2010-06-28
Modified configuration scripts to allow building on OpenSUSE (and Ubuntu?)
Version 6.0, 2010-06-25
Allow long options --help and --version.
Using autoconf/automake.
Version 5.8, 2010-04-10
Suppress ".tex" in the prompt.
Version 5.7, 2010-04-05
Delete command can now delete more than one element/arrow.
Turning off all pdflatex output.
Version 5.6.1, 2010-03-26
Open tex_file for writing before restoring from backup.
Version 5.6, 2010-03-25
Modified chmod system calls to be compatible with cygwin on Windows fat32.
Closing the tex_file before processing it (needed for Windows).
Simplified the log-output generation if processing fails.
Always use pdflatex because of automatic rotation in ps2pdf.
Version 5.5, 2010-03-16
Added sleep(1) between initial generations of the pdf file.
Removed all interactions before initial generation of pdf file.
Removed the option of opening another tex file.
Removed the automatic start-up of PDFVIEWER.
Added PRIVATE (i.e., static) specifiers where appropriate.
Version 5.4, 2009-11-12
Must re-open tex_file to regenerate it (!)
Version 5.3, 2009-10-30
Use ps2pdf without attempting rotation correction when using latex,
but, to allow for a script that tests for "Orientation: Landscape" in the ps file,
if the environment variable PS2PDF is defined, its value is used in lieu of ps2pdf.
Offer to quit if the user won't provide a file name.
Allow for PAGER == most.
Code clean-up, especially localizing many globals.
Version 5.2, 2009-10-19
Corrected coding for new file name in open_tex_file.
Version 5.1, 2009-10-01
Final processing no longer automatically uses LaTeX.
Version 5.0, 2009-09-15
Replaced filename by basefilename and chartfilename to allow more than
one document to share an included chart file and allow more than one
chart to be included in a document. The *file* command has been removed.
Version 4.3, 2009-09-06
Replaced strlcpy and strlcpy by append (with offset).
Introduced triv_type to avoid a "pedantic" error.
Corrected an incorrect sizeof argument in open_tex_file.
Call regenerate_and_process after a partial raise.
Version 4.2, 2008-07-17
Use the /Orientation directive to gs (ghostscript) to ensure proper orientation
when slanted fonts are used.
Version 4.1, 2008-05-16
Implement shift/raise of specified diagram elements.
Eliminate unnecessary dependence on libtermcap.
Version 4.0.1, 2008-02-28
Corrected txt field of struct text to have size LINE_LEN+1
Version 4.0, 2008-02-13
Test for curvatures > 100.
Implement \text command.
Version 3.8.1, 2007-03-17
Sleep for KILL_WAIT seconds before terminating the pdf viewer.
Version I.8, 2007-02-08
Semicolon appended to most user commands suppresses regeneration and reprocessing.
^C saves to file.tex. Use quit; to exit without saving.
Final processing uses latex -> dvips -> ps2pdf to produce a smaller final pdf.
Attempts to display the pdf during editing using value of environment variable
PDFVIEWER.
Version 3.7, 2006-12-27
latex->dvips->ps2pdf processing restored as an option.
Warns about quitting with unpasted cuts.
Version 3.6, 2006-11-29
Corrects two minor logical errors in code for arrow deletion and box editing.
Generates progress messages when analyzing/saving/processing.
Re-loads after every shell escape, so we can discard the Edit command.
Applies shift/raise to cut and deleted nodes.
Processes tex files using pdflatex instead of latex -> dvips -> ps2pdf.
Version 3.5, 2006-11-20
simpler and more flexible implementation of cut/paste, delete/undelete
generate undelete messages
automatic re-generation and processing after editing operation
Version 3.4, 2006-11-15
deal with files that are (initially) read-only
deal with attempts to cut arrows
Version 3.3, 2006-11-07
preserve comment lines within the chart environment
correct option-handling bug introduced in 3.0
Version 3.2, 2006-11-03
Version 3.1, 2006-10-29
introduce Edit command
restore write-access to TeX file during Edit or shell-command execution
try to display error message in log file if LaTeX processing fails
Version 3.0, 2006-10-19
replaced calls to make file.pdf by successive calls to latex, dvips, ps2pdf
removed all references to pdf viewer, user must start one him/herself
replaced strncpy/cat by strlcpy/cat (my implementation of the OpenBSD functions)
produce warning message for truncated course code, timetable, title
Version 2.4, 2006-04-12
added undelete command
no warnings using -Wall -Wextra
allow for cut/paste of minis that are targets of arrow
test for non-existence of source/target box/mini for new arrow
handle more signals than SIGINT (such as SIGSEGV)
Version 2.3, 2006-03-23
remove "which" checking of pdfviewer to allow, e.g., xpdf -remote label
use geometry.sty for new blank TeX file
declarations of optarg, optind moved to prerex.h
Version 2.2.2, 2006-03-08
Free linked structures and readline strings.
Turn grid off initially before restoring a backup.
Version 2.2.1, 2006-02-18
Don't try to remove/restore access to an empty filename.
Version 2.2, 2006-02-15
Inputs and outputs \begin{chart} ... \end{chart} instead of \chart{ ... }
Version 2.1.1, 2006-02-13
Add designation PRIVATE ( = static) to definitions of functions and variables.
Version 2.1, 2006-02-09
Trap SIGINT in order to restore write-access after ^C.
Add Backup command.
Version 2.0.3, 2006-02-07
New arrow should have default curvature.
Version 2.0.1, 2006-02-06
Free list structures before Restoring.
Version 2.0, 2006-02-03
Partition into separate modules prerex.c, inout.c, edit.c
Version 1.2.2, 2006-02-02
Cleanup curvature code.
Use %s to output % in regenerate_tex_file.
Version 1.2.1, 2006-02-02
Allow for curved recommended and co-requisite arrows.
Version 1.2.0, 2006-02-01
Restore command.
Version 1.1.2, 2006-01-31
Create backup of Tex file before editing.
Re-open TeX file for writing before regenerating.
Version 1.1.1, 2006-01-30
TeX file read-only during editing (except when re-generating it).
Version 1.1.0, 2006-01-29
Corrected use of cut stacks.
Eliminated cut arrow command.
Introduced delete box/mini and delete arrow.
Checked for duplicate boxes, minis or arrows (e.g., when pasting).
Version 1.0.5, 2006-01-28
Keep stacks of cut boxes, minis, and arrows.
Version 1.0.4, 2006-01-27
Add option -p.
Version 1.0.3, 2006-01-26
Replace system calls to "xpdf" by calls to pdfviewer (if defined).
Version 1.0.2, 2006-01-25
Replace system call to "pdflatex filename" by call to "make filename.pdf"
to provide more flexibility (e.g., LaTeX vs pdfLaTeX).
Version 1.0.1, 2006-01-24
Error message for pdflatex failure now refers to filename.log.
Inserted checks for lp or cp increasing too far in read_textfield
and read_bracketed_textfield.
Process TeX file before analyzing it (as a syntax sanity pre-check).
Defer arrow output if source box not previously output.
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