3.2.6 Top 20 Emacs commands

Here is a list of the 20 probably most useful commands when using the SINGULAR Emacs interface.

Starting and stopping of SINGULAR:

• singular (menu Singular->Start Default...): starts SINGULAR using default arguments.

• singular-other (menu Singular->Start): starts SINGULAR asking for several arguments in the minibuffer area.

• singular-exit (key C-c $ or menu Singular->Exit): kills the SINGULAR process running in the current buffer (but does not kill the buffer).

• singular-restart (key C-c C-r or menu Singular->Restart): kills the SINGULAR process running in the current buffer and starts a new SINGULAR process with exactly the same arguments as before.

Editing input and output:

• singular-beginning-of-line (key C-a): moves point to beginning of line, then skips past the SINGULAR prompt, if any.

• singular-toggle-truncate-lines (key C-c C-t or menu Commands->Truncate lines): toggles whether long lines should be truncated or not. If lines are not truncated, the commands singular-scroll-left and singular-scroll-right are useful to scroll left and right, resp.

• singular-dynamic-complete (key TAB): performs context specific completion. If point is inside a string, file name completion is done. If point is at the end of a help command (i.e., help or ?), completion on SINGULAR help topics is done. If point is at the end of an example command (i.e., example), completion is done on SINGULAR examples. In all other cases, completion on SINGULAR commands is done.

• singular-folding-toggle-fold-latest-output (key C-c C-o or menu Commands->Fold/ Unfold Latest Output): toggles folding of the latest output section. If your last SINGULAR command produced a huge output, simply type C-c C-o and it will be replaced by a single line.

• singular-folding-toggle-fold-at-point (key C-c C-f or menu Commands->Fold/Unfold At Point): toggles folding of the section the point currently is in.

• singular-folding-fold-all-output (menu Commands->Fold All Output): folds all SINGULAR output, replacing each output section by a single line.

• singular-folding-unfold-all-output (menu Commands->Unfold All Output): unfolds all SINGULAR output sections showing their true contents.

Loading of files and SINGULAR demo mode:

• singular-load-library (key C-c C-l or menu Commands->Libraries->other...): asks for a standard library name or a library file in the minibuffer (hit TAB for completion) and loads the library into SINGULAR. The submenu Libraries of the Commands menu also provides a separate menu item for each standard library.

• singular-load-file (key C-c < or menu Commands->Load File...): asks for a file name in the minibuffer (which is expanded using expand-file-name if given a prefix argument) and loads the file into SINGULAR.

• singular-demo-load (key C-c C-d or menu Commands->Load Demo...): asks for a file name of a SINGULAR demo file in the minibuffer area (hit SPACE for completion) and enters the SINGULAR demo mode showing the first chunk of the demo.

• singular-demo-exit (menu Commands->Exit Demo): exits from SINGULAR demo mode and cleans up everything that is left from the demo.

Help and Customization:

• singular-help (key C-h C-s or menu Singular->Singular Help): asks for a SINGULAR help topic in the minibuffer (hit TAB for completion) and shows the help text in a separate buffer.

• singular-example (key C-c C-e or menu Singular->Singular Example): asks for a SINGULAR command in the minibuffer (hit TAB for completion) and executes the example of this command in the current SINGULAR buffer.

• customize-group (menu Singular->Preferences): enters the customization group of the SINGULAR Emacs interface. (If called via M-x customize-group give argument singular-interactive in the minibuffer area.)