3 Geiser is a generic Emacs/Scheme interaction mode, featuring an
4 enhanced REPL and a set of minor modes improving Emacs' basic scheme
5 major mode. The main functionalities provided are:
7 - Evaluation of forms in the namespace of the current module.
10 - Namespace-aware identifier completion (including local bindings,
11 names visible in the current module, and module names).
12 - Autodoc: the echo area shows information about the signature of
13 the procedure/macro around point automatically.
14 - Jump to definition of identifier at point.
15 - Access to documentation (including docstrings when the
16 implementation provides it).
17 - Listings of identifiers exported by a given module.
18 - Listings of callers/callees of procedures.
19 - Rudimentary support for debugging (list of
20 evaluation/compilation error in an Emacs' compilation-mode
23 NOTE: if you're not in a hurry, [[http://www.nongnu.org/geiser/][Geiser's website]] contains a nicer
24 manual, also included in Geiser tarballs as a texinfo file
27 * Supported scheme implementations
29 - Guile 2.0 (not released yet: use the latest git master branch).
30 - PLT Racket 5.0.1 or better.
33 Geiser can be used either directly from its uninstalled source tree
34 or byte-compiled and installed after perfoming the standard
35 configure/make/make install dance.
38 - Extract the tarball or clone the git repository anywhere in your
39 file system. Let's call that place <path-to-geiser>.
42 #+BEGIN_SRC emacs-lisp
43 (load-file "<path-to-geiser>/elisp/geiser.el")
47 - Create a build directory, `build', say:
50 $ mkdir build; cd build
54 $ ../configure && make
57 Now, you can use the byte-compiled Geiser in place by adding to
60 #+BEGIN_SRC emacs-lisp
61 (load "<path-to-geiser>/build/elisp/geiser-load")
64 or, alternatively, install it with:
70 (you might need to get root access, depending on your installation
71 directory) and, instead of the above load forms, require
72 'geiser-install (not 'geiser, mind you) in your emacs
75 #+BEGIN_SRC emacs-lisp
76 (require 'geiser-install)
82 The loading invocations above install all supported Scheme
83 implementations. You can list explicitly the ones that you want by
84 setting the variable `geiser-impl-installed-implementations' *before*
85 loading geiser.el. For instance:
87 #+BEGIN_SRC emacs-lisp
88 (setq geiser-impl-installed-implementations '(racket guile))
91 On opening a scheme file, Geiser will try to guess its Scheme,
92 defaulting to the first in the list. Use `C-c C-s' to select the
93 implementation by hand (on a per file basis).
95 Check the geiser customization group for some options with:
97 M-x customize-group RET geiser RET
99 In particular, customize `geiser-<impl>-binary', which should point
100 to an executable in your path.
102 To start a REPL, M-x geiser.
104 *** Completion with company-mode
105 Geiser offers identifier and module name completion, bound to
106 M-TAB and M-` respectively. Only names visible in the current
109 While that is cool and all, things are even better: if you have
110 [[http://nschum.de/src/emacs/company-mode/][company-mode]] installed, Geiser's completion will use it. Just
111 require company-mode and, from then on, any new scheme buffer or
112 REPL will use it. If you didn't know about Nikolaj Schumacher's
113 awesome mode, check [[http://www.screentoaster.com/watch/stU0lSRERIR1pYRFVdXVlRVFFV/company_mode_for_gnu_emacs][this screencast]].
115 * Quick key reference
117 *** In Scheme buffers:
119 |---------------------+-------------------------------------------------|
120 | C-c C-z | Switch to REPL |
121 |---------------------+-------------------------------------------------|
122 | C-u C-c C-z | Switch to REPL and current module |
123 |---------------------+-------------------------------------------------|
124 | C-c C-s | Specify Scheme implementation for buffer |
125 |---------------------+-------------------------------------------------|
126 | M-. | Go to definition of identifier at point |
127 |---------------------+-------------------------------------------------|
128 | M-, | Go back to where M-. was last invoked |
129 |---------------------+-------------------------------------------------|
130 | C-c C-e m | Ask for a module and open its file |
131 |---------------------+-------------------------------------------------|
132 | C-M-x | Eval definition around point |
133 |---------------------+-------------------------------------------------|
134 | C-c M-e | Eval definition around point and switch to REPL |
135 |---------------------+-------------------------------------------------|
136 | C-x C-e | Eval sexp before point |
137 |---------------------+-------------------------------------------------|
138 | C-c C-r | Eval region |
139 |---------------------+-------------------------------------------------|
140 | C-c M-r | Eval region and switch to REPL |
141 |---------------------+-------------------------------------------------|
142 | C-c C-m x | Macro-expand definition around point |
143 |---------------------+-------------------------------------------------|
144 | C-c C-m e | Macro-expand sexp before point |
145 |---------------------+-------------------------------------------------|
146 | C-c C-m r | Marcro-expand region |
147 |---------------------+-------------------------------------------------|
148 | C-u C-c C-m [x,e,r] | (With prefix, macro expansions are recursive) |
149 |---------------------+-------------------------------------------------|
150 | C-c C-k | Compile and load current file |
151 |---------------------+-------------------------------------------------|
152 | C-c C-l | Load current file |
153 |---------------------+-------------------------------------------------|
154 | C-c C-d d | See documentation for identifier at point |
155 |---------------------+-------------------------------------------------|
156 | C-c C-d m | See a list of a module's exported identifiers |
157 |---------------------+-------------------------------------------------|
158 | C-c C-d a | Toggle autodoc mode |
159 |---------------------+-------------------------------------------------|
160 | C-c< | Show callers of procedure at point |
161 |---------------------+-------------------------------------------------|
162 | C-c> | Show callees of procedure at point |
163 |---------------------+-------------------------------------------------|
164 | C-c C-x f | See a generic's methods signatures |
165 |---------------------+-------------------------------------------------|
166 | M-TAB | Complete identifier at point |
167 |---------------------+-------------------------------------------------|
168 | M-`, C-. | Complete module name at point |
169 |---------------------+-------------------------------------------------|
170 | TAB | Complete identifier at point or indent |
171 | | (If `geiser-mode-smart-tab-p' is t) |
172 |---------------------+-------------------------------------------------|
176 |-------------+----------------------------------------------------|
177 | C-c C-z | Start Scheme REPL, or jump to previous buffer |
178 |-------------+----------------------------------------------------|
179 | C-c C-q | Kill Scheme process |
180 |-------------+----------------------------------------------------|
181 | M-. | Edit identifier at point |
182 |-------------+----------------------------------------------------|
183 | TAB, M-TAB | Complete identifier at point |
184 |-------------+----------------------------------------------------|
185 | M-`, C-. | Complete module name at point |
186 |-------------+----------------------------------------------------|
187 | M-p, M-n | Prompt history, matching current prefix |
188 |-------------+----------------------------------------------------|
189 | C-c C-k | Nuke REPL: use it if the REPL becomes unresponsive |
190 |-------------+----------------------------------------------------|
191 | C-c C-m | Set current module |
192 |-------------+----------------------------------------------------|
193 | C-c C-i | Import module into current namespace |
194 |-------------+----------------------------------------------------|
195 | C-c C-l | Load scheme file |
196 |-------------+----------------------------------------------------|
197 | C-c C-d C-d | See documentation for symbol at point |
198 |-------------+----------------------------------------------------|
199 | C-c C-d C-m | See documentation for module |
200 |-------------+----------------------------------------------------|
201 | C-c C-d C-a | Toggle autodoc mode |
202 |-------------+----------------------------------------------------|
204 *** In the documentation browser:
206 |------------+----------------------------------------------|
208 |------------+----------------------------------------------|
209 | p, b | Previous page |
210 |------------+----------------------------------------------|
211 | TAB, S-TAB | Next/previous link |
212 |------------+----------------------------------------------|
213 | k | Kill current page and go to previous or next |
214 |------------+----------------------------------------------|
215 | g, r | Refresh page |
216 |------------+----------------------------------------------|
217 | c | Clear browsing history |
218 |------------+----------------------------------------------|
219 | ., M-. | Edit identifier at point |
220 |------------+----------------------------------------------|
221 | z | Switch to REPL |
222 |------------+----------------------------------------------|
224 |------------+----------------------------------------------|
226 *** In backtrace (evaluation/compile result) buffers:
228 - TAB, M-TAB for error navigation.