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Diffstat (limited to 'ide/FAQ')
| -rw-r--r-- | ide/FAQ | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -17,3 +17,26 @@ R2) Insert Q3) How to enable antialiased fonts? R3) Set the GDK_USE_XFT variable to 1. + +Q4) How can use Forall and Exists pretty symbols ? +R4) Thanks to the Notation features in Coq, you just need to paste these + lines in your Coq Buffer : +====================================================================== +Notation "∀ x : t | P" := (x:t)P (at level 1, x,t,P at level 10). +Notation "~ x : t | P" := (EXT x:t|P) (at level 1, x,t,P at level 10). +====================================================================== +Then you need an input method for these symbols. +-First solution : type "<CONTROL>2200" to enter a forall. 2200 is the + hexadecimal code for forall in unicode charts. + 2203 is for exists. See http://www.unicode.org for more. + +-Second solution : rebind "<AltGr>a" to forall. Under X11, you need to + use + xmodmap -e "keycode 24 = a A F13 F13" + and then to add + bind "F13" {"insert-at-cursor" ("∀")} + to your "binding "text"" section in .coqiderc. + The strange ("∀") argument is the UTF-8 encoding for + 0x2200. It is computed by lablgtk2 by + Glib.Utf8.from_unichar 0x2200;; + Further symbols can be found on higher Fxx key symbols. |