-*- outline -*- This is a summary of main changes. For details, please see the Git ChangeLog, the GitHub repo https://github.com/ProofGeneral/PG and the PG Trac http://proofgeneral.inf.ed.ac.uk/trac * Changes of Proof General 4.5 from Proof General 4.4 ** Generic changes *** bug fixes - Using query-replace (or replace-string) in the processed region doesn't wrongly jump to the first match anymore. - cheat face (admit etc) now visible when locked. *** remove key-binding for proof-electric-terminator-toggle - The default key-binding for proof-electric-terminator-toggle (C-c .) was too easy to enter by mistake. And it was not that useful as we can expect users to configure electric-terminator once and for all. Hence the removal of this default key-binding. *** add another (fallback) key-binding for proof-goto-point - The default key-binding for proof-goto-point (C-c ) was not available in TTYs. Now, this function can also be run with "C-c RET", which happens to be automatically trigerred if we type "C-c " in a TTY. ** Coq changes *** new menu Coq -> Auto Compilation for all background compilation options *** support for 8.5 quick compilation See new menu Coq -> Auto Compilation. Select "no quick" as long as you have not switched to "Proof using" to compile without -quick. Select "quick no vio2vo" to use -quick without vio2vo (and guess what "quick and vio2vo" means ;-), select "ensure vo" to ensure a sound development. See the option `coq-compile-quick' or the subsection "11.3.3 Quick compilation and .vio Files" in the Coq reference manual. *** new option coq-compile-keep-going (in menu Coq -> Auto Compilation) Similar to ``make -k'', with this option enabled, background compilation does not stop at the first error but rather continues as far as possible. *** Limited extensibility for indentation Coq indentation mechanism is based on a fixed set of tokens and precedence rules. Extensibility is now possible by adding new syntax for a given token (no new token can be added). Typical example: if you define a infix operator xor you may want to define it as a new syntax for token \/ in order to have the indentation rules of or applied to xor. Use: (setq coq-smie-user-tokens '(("xor" . "\\/"))) The set of tokens can be seen in variable smie-grammar. *** Clickable Hypothesis in goals buffer to copy/paste hyp names Clicking on a hyp name in goals buffer with button 2 copies its name at current point position (which should be in the scripting buffer). This eases the insertion of hypothesis names in scripts. *** Folding/unfolding hypothesis A cross "-" is displayed to the left of each hypothesis of the goals buffer. Clicking ont it (button 1) hides/unhides the hypothesis. You can also hit "f" while ont he hypothesis. "F" unfolds all hypothesis. Hide/ unhide status remains when goal changes. *** Highlighting of hypothesis You can highlight hypothesis in goals buffer on a per name fashion. Hit "h" while on the hypothesis. "H" removes all highlighting in the buffer. Highlighting status remains when goal changes. **** Automtic highlighting with (search)About. Hypothesis cited in the response buffer after C-c C-a C-a (i.e. M-x coq-SearchAbout) will be highlighted automatically. Any other hypothesis highlighted is unhighlighted. To disable this, do: (setq coq-highlight-hyps-cited-in-response nil) *** bug fixes - avoid leaving partial files behind when compilation fails - 123: Parallel background compliation fails to execute some imports - fix error in process filter: Cannot resize window - 54 partially: Buffer coq-compile-response sometimes takes over the whole window - 75: Library more.v is required - 70: Coq trunk + compile before require => « Invalid version syntax: 'trunk' » - 92: Compile before require from current directory failing with 8.5 * Changes of Proof General 4.4 from Proof General 4.3 ** ProofGeneral has moved to GitHub! https://github.com/ProofGeneral/PG Please submit new bugs there, old bugs may stay in good old PG trac for a while though: http://proofgeneral.inf.ed.ac.uk/trac ** Coq changes *** indentation of ";" tactical: by default the indentation is like this: tac1; tac2; tac3. do this: (setq coq-indent-semicolon-tactical 0) to have this: tac1; tac2; tac3. *** Option to disable the auto resizing of response buffer: By default when the response buffer is on the same column than goals buffer, pg changes its size dynamically to optimize goals displaying. To disable this feature use: (setq coq-optimise-resp-windows-enable nil) *** Option to prefer top of conclusion instead of bottom When display goals that do not fit in the goals window, PG prefers to display the bottom of the goal (where lies it own conclusion. You can make it prefer the top of the conclusion by setting this: (setq coq-prefer-top-of-conclusion t) *** Auto adjusting of printing width On by default. To disable: Coq/Settings/Auto Adapt Printing Width or (setq coq-auto-adapt-printing-width nil). *** Removed the Set Undo 500 at start. This is obsolete. To recover: (setq coq-user-init-cmd `("Set Undo 500.")) *** Option to highlight usual symbols Off by default, enable using: (setq coq-symbol-highlight-enable t) * Changes of Proof General 4.3 from Proof General 4.2 ** Prooftree changes *** Require Prooftree version 0.11 Check the Prooftree website to see which other versions of Prooftree are compatible with Proof General 4.3. *** New features One can now trigger an retraction (undo) by selecting the appropriate sequent in Prooftree. One can further send proof commands or proof scripts from whole proof subtrees to Proof General, which will insert them in the current buffer. Prooftree also supports some recent Coq features, see below. ** Coq changes *** Asynchronous parallel compilation of required modules Proof General has now a second implementation for compiling required Coq modules. Check menu Coq -> Settings -> Compile Parallel In Background to compile modules in parallel in the background while Proof General stays responsive. *** Support for more bullets (coq 8.5): -- --- ++ +++ ** *** Scripting supports bullets of any length. Indentation supports only bullets of length <= 4 (like ----). Longer may be supported if needed. For indentation to work well, please use this precedence: - + * -- ++ ** --- +++ *** ... *** smie indentation is now the only choice. Old code removed. will work only if emacs >= 23.3. *** indentation of modules, sections and proofs are customizable (setq coq-indent-modulestart X) will set indentation width for modules and sections to X characters (setq coq-indent-proofstart X) will set indentation width for modules and sections to X characters *** indentation of match with cases: by default the indentation is like this now: match n with O => ... | S n => ... end do this: (setq coq-match-indent 4) to get back the previous indetation style: match n with O => ... | S n => ... end *** indentation now supports { at end of line: example: assert (h:n = k). { apply foo. reflexivity. } apply h. *** Default indentation of forall and exists is not boxed anymore For instance, this is now indented like this: Lemma foo: forall x y, x = 0 -> ... . instead of: Lemma foo: forall x y, x = 0 -> ... . (do this: (setq coq-indent-box-style t) to bring the box style back). Use (setq coq-smie-after-bolp-indentation 0) for a smaller indentation: Lemma foo: forall x y, x = 0 -> ... . *** Default indentation cases of "match with" are now indented by 2 instead of 4. "|" is indented by zero: match n with 0 => ... | S n => ... end instead of: match n with 0 => ... | S n => ... end do this: (setq coq-match-indent 4) to bring old behaviour back. *** Support for bullets, braces and Grab Existential Variables for Prooftree. *** Support for _Coqproject files According to Coq documentation, it is advised to use coq_makefile -f _CoqProject -o Makefile to build your Makefile automatically from "profect file" _CoqProject. Such a file should contain the options to pass to coq_makefile, i.e. paths to add to coq load path (-I, -R) and other options to pass to coqc/coqtop (-arg). Coqide (and now proofgeneral) do use the information stored in this file to configure the options to add to the coqtop invocation. When opening a coq file, proofgeneral looks for a file _Coqproject in the current directory or a parent directory and reads it. Except for very unlikely situation this should replace the use of local file variables (which remains possible and overrides project file options). *** Support for prettify-symbols-mode. *** Colors in response and goals buffers Experimental: colorize hypothesis names and some parts of error and warning messages, and also evars. For readability. *** Coq Querying facilities **** Minibuffer interactive queries Menu Coq/Other Queries (C-c C-a C-q) allows to send queries (like Print, Locate...) (à la auctex) without inserting them in the buffer. Queries are TAB completed and the usual history mechanism applies. Completion allows only a set of state preserving commands. The list is not exhaustive yet. This should replace the C-c C-v usual command mechanism (which has no completion). **** Mouse Queries This remaps standard emacs key bindings (faces and buffers menus popup), so this is not enabled by default, use (setq coq-remap-mouse-1 t) to enable. - (control mouse-1) on an identifier sends a Print query on that id. - (shift mouse-1) on an identifier sends a About query on that id. - (control shift mouse-1) on an identifier sends a Check query on that id. As most of the bindings, they are active in the three buffer (script, goals, response). Obeys C-u prefix for "Printing all" flag. *** bug fixes - Annoying cursor jump when hitting ".". - random missing output due to the prover left in silent mode by a previously scripted error. - Better display of warnings (less messages lost). * Changes of Proof General 4.2 from Proof General 4.1 ** Generic/misc changes *** Added user option: `proof-next-command-insert-space' Allows the user to turn off the electric behaviour of generating newlines or spaces in the buffer. Turned on by default, set to nil to revert to PG 3.7 behaviour. *** Support proof-tree visualization via the external Prooftree program Currently only Coq (using Coq version 8.4beta or newer) supports proof-tree visualization. If Prooftree is installed, the proof-tree display can be started via the toolbar, the Proof-General menu or by C-c C-d. To get Prooftree, visit http://askra.de/software/prooftree *** Compilation fixes for Emacs 24. *** Fix "pgshell" mode for shell/CLI prover interaction Also add some quick hacks for scripting OCaml and Haskell ** Coq changes *** Smarter three windows mode: In three pane mode, there are three display modes, depending where the three useful buffers are displayed: scripting buffer, goals buffer and response buffer. Here are the three modes: - vertical: the 3 buffers are displayed in one column. - hybrid: 2 columns mode, left column displays scripting buffer and right column displays the 2 others. - horizontal: 3 columns mode, one for each buffer (script, goals, response). By default, the display mode is automatically chosen by considering the current emacs frame width: if it is smaller than `split-width-threshold' then vertical mode is chosen, otherwise if it is smaller than 1.5 * `split-width-threshold' then hybrid mode is chosen, finally if the frame is larger than 1.5 * `split-width-threshold' then the horizontal mode is chosen. You can change the value of `split-width-threshold' at your will (by default it is 160). If you want to force one of the layouts, you can set variable `proof-three-window-mode-policy' to 'vertical, 'horizontal or 'hybrid. The default value is 'smart which sets the automatic behaviour described above. example: (setq proof-three-window-mode-policy 'hybrid). Or via customization menus. *** Multiple file handling for Coq Feature. No more experimental. Set coq-load-path to the list of directories for libraries (you can attach it to the file using menu "coq prog args"). Many thanks to Hendrik Tews for that great peace of code! *** Support proof-tree visualization Many thanks to Hendrik Tews for that too! *** New commands for Print/Check/About/Show with "Printing All" flag Avoids typing "Printing All" in the buffer. See the menu Coq > Other queries. Thanks to Assia Mahboubi and Frederic Chyzak for the suggestion. Shortcut: add C-u before the usual shortcut (example: C-u C-c C-a C-c for: Set Printing All. Check. Unset Printing All. ) *** Coq menus and shortcut in response and goals buffers. Check, Print etc available in these buffers. *** Tooltips hidden by default Flickering when hovering commands is off by default! *** "Insert Requires" now uses completion based on coq-load-path *** New setting for hiding additional goals from the *goals* buffer Coq > Settings > Hide additional subgoals *** Double hit terminator Experimental: Same as electric terminator except you have to type "." twice quickly. Electric terminator will stop getting in the way all the time with module.notations. Coq > Double Hit Electric Terminator. Note 1: Mutually exclusive with usual electric terminator. Note 2: For french keyboard it may be convenient to map ";" instead of ".": (add-hook 'proof-mode-hook (lambda () (define-key coq-mode-map (kbd ";") 'coq-terminator-insert))) *** Indentation improvements using SMIE. Supporting bullets and { }. Still experimental. Please submit bugs. IMPORTANT: Limitations of indentation: - hard-wired precedence between bullets: - < + < * example: Proof. - split. + split. * auto. * auto. + intros. auto. - auto. Qed. - Always use "Proof." when proving an "Instance" (wrong indentation and slow downs otherwise). As a general rule, try to always introduce a proof with "Proof." (or "Next Obligation" with Program). *** "Show" shows the (cached) state of the proof at point. If Show goals (C-c C-a C-s) is performed when point is on a locked region, then it shows the prover state as stored by proofgeneral at this point. This works only when the command at point has been processed by "next step" (otherwise coq was silent at this point and nothing were cached). *** Minor parsing fixes *** Windows resizing fixed ** HOL Light [WORK IN PROGRESS] *** Basic support now works, see hol-light directory [WORK IN PROGRESS] * Changes of Proof General 4.1 from Proof General 4.0 ** Generic changes *** Parsing now uses cache by default (proof-use-parser-cache=t). Speeds up undo/redo in long buffers if no edits are made. ** Isabelle changes *** Unicode tokens enabled by default ** Coq changes *** A new indentation algorithm, using SMIE. This works when SMIE is available (Emacs >= 23.3), but must be enabled by the variable `coq-use-smie'. It also provides improved navigation facilities for things like C-M-t, C-M-f and C-M-b. Addition by Stefan Monnier. *** Experimental multiple file handling for Coq. Proof General is now able to automatically compile files while scripting Require commands, either internally or externally (by running Make). Additionally, it will automatically retract buffers when switching to new files, to model separate compilation properly. For details, see the Coq chapter in the Proof General manual. Addition by Hendrik Tews. *** Fixes for Coq 8.3 * Main Changes for Proof General 4.0 from 3.7.1 ** Install/support changes *** XEmacs is no longer supported; PG only works with GNU Emacs 23.1+ Older GNU Emacs versions after 22.3 may work but are unsupported. *** Primary distribution formats changed The RPM and zip file formats have been removed. We are very grateful to third-party packagers for Debian and Fedora for distributing packaged versions of PG. ** Generic changes *** Font-lock based Unicode Tokens mode replaces X-Symbol Unicode Tokens has been significantly improved since PG 3.7.1, and now works purely at a "presentation" level without changing buffer contents. See Tokens menu for many useful commands. *** Document-centred mechanisms added: - auto raise of prover output buffers can be disabled - output retained for script buffer popups - background colouring for locked region can be disabled - ...but "sticky" colouring for errors can be used - edit on processed region can automatically undo Depending on the prover language and interaction output, this may enable a useful "document centred" way of working, when output buffers can be ignored and hidden. Use "full annotation" to keep output when several steps are taken. Standard values for the options can be set in one go with: Quick Options -> Display -> Document Centred and the defaults set back with Quick Options -> Display -> Default. See the manual for more details. *** Automatic processing mode Quick Options -> Processing -> Send Automatically Sends commands to the prover when Emacs is idle for a while. This only sends commands when the last processing action has been an action moving forward through the buffer. Interrupt by making a keyboard/mouse action. See the manual for more details. *** Fast buffer processing option Quick Options -> Processing -> Fast Process Buffer This affects 'proof-process-buffer' (C-c C-b, toolbar down). It causes commands to be sent to the prover in a tight loop, without updating the display or processing other input. This speeds up processing dramatically on some Emacs implementations. To interrupt, use C-g, which reverts to normal processing mode. (To stop that, use C-c C-c as usual). *** Improved prevention of Undo in locked region With thanks to Erik Martin-Dorel and Stefan Monnier. Undo in read only region follows `proof-strict-read-only' and gives the user the chance to allow edits by retracting first. *** Proof General -> Options menu extended and rearranged - new menu for useful minor modes indicates modes that PG supports *** New query identifier info button and command (C-c C-i, C-M-mouse1) These are convenience commands for looking up identifiers in the running prover. *** New user configuration options (also on Proof General -> Options) proof-colour-locked (use background colour for checked text) proof-auto-raise-buffers (set to nil for manual window control) proof-full-decoration (add full decoration to input text) proof-sticky-errors (add highlighting for commands that caused error) proof-shell-quiet-errors (non-nil to disable beep on error; default=nil) proof-minibuffer-messages (non-nil to show prover messages; default=nil) *** Removed user configuration options proof-toolbar-use-button-enablers (now always used) proof-output-fontify-enable (now always enabled) *** "Movie" output: export an annotated buffer in XML Basic movie output for Proviola, see http://mws.cs.ru.nl/proviola ** Isabelle/Isar changes *** Support undo back into completed proofs (linear_undo). *** Electric terminator works without inserting terminator Hit ; to process the last command. Easier than C-RET. *** Line numbers reported during script management *** Sync problems with bad input prevented by command wrapping *** Isabelle Settings now organised in sub-menus ** Coq changes *** Only supports Coq 8.1+, support for earlier versions dropped. *** Holes mode can be turned on/off and has its own minor mode *** Some keyboard shortcuts are now available in goals buffer C-c C-a C- are now available in goal buffer. *** Experimental storing buffer To store the content of response or goals buffer in a dedicated persistent buffer (for later use), use Coq/Store response or Coq/Store goal. *** bug fixes, bugs - Three panes mode: "window would be too small" error fixed. - Indentation: several error fixed. If you want to indent tactics inside "Instance" or "Add Parametric Relation" etc, please put "Proof." before the tactics, there is no way for emacs to guess wether these commands initiate new goals or not. - coq prog args permanent settings is working again - when a proof is completed, the goals buffer is cleared again. ** Notable internal changes *** Altered prover configuration settings (internal) proof-terminal-char replaced by proof-terminal-string urgent message matching is now anchored; configurations for `proof-shell-clear-response-regexp', etc, must match strings which begin with `proof-shell-eager-annotation-start'. proof-shell-strip-output-markup: added for cut-and-paste proof-electric-terminator-noterminator: allows non-insert of terminator pg-insert-output-as-comment-fn: removed (use p-s-last-output) proof-shell-wakeup-char: removed (special chars deprecated) pg-use-specials-for-fontify: removed (ditto) proof-shell-prompt-pattern: removed (was only for shell UI) proof-shell-abort-goal-regexp: removed (ordinary response) proof-shell-error-or-interrupt-seen: removed, use p-s-last-output-kind proof-script-next-entity-regexps,next-entity-fn: removed (func-menu dead) proof-script-command-separator: removed (always a space) *** Simplified version of comint now used for proof shell (internal) To improve efficiency, a cut-down version of comint is now used. Editing, history and decoration in the shell (*coq*, *isabelle*, etc) are impoverished compared with PG 3.X.