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
22 - Support for inline images in schemes, such as Racket, that treat
23 them as first order values.
25 NOTE: if you're not in a hurry, [[http://www.nongnu.org/geiser/][Geiser's website]] contains a much
30 Geiser needs Emacs 24 or better, and at least one of the supported
31 scheme implementations:
33 - Guile 2.2 or better.
34 - Chicken 4.8.0 or better.
35 - MIT/GNU Scheme 9.1.1 or better.
36 - Chibi 0.7.3 or better.
37 - Gambit 4.9.3 or better.
38 - Racket 6.0 or better.
43 The easiest way is to use MELPA, and just type
44 =M-x package-install RET geiser= inside emacs.
46 Geiser can be used either directly from its uninstalled source tree
47 or byte-compiled and installed after performing the standard
48 configure/make/make install dance. See the INSTALL file for more details.
51 These steps are necessary to fully support Chicken Scheme, but are
52 not required for any other scheme.
54 - Install the necessary support eggs:
56 $ chicken-install -s apropos chicken-doc srfi-18 srfi-1
58 - Update the Chicken documentation database:
60 $ cd `csi -R chicken.platform -p '(chicken-home)'`
61 $ curl https://3e8.org/pub/chicken-doc/chicken-doc-repo-5.tgz | sudo tar zx
65 These steps are necessary to fully support Chicken Scheme, but are
66 not required for any other scheme.
68 - Install the necessary support eggs:
71 $ chicken-install -s apropos chicken-doc
74 - Update the Chicken documentation database:
77 $ cd `csi -p '(chicken-home)'`
78 $ curl http://3e8.org/pub/chicken-doc/chicken-doc-repo.tgz | sudo tar zx
82 These steps are necessary to fully support Gambit Scheme.
84 1 - clone the last version of gambit
85 2 - configure gambit using --enable-rtlib-debug-source to activate autodoc
88 $ git clone "the gambit repo address"
90 $ ./configure --enable-single-host --enable-debug --enable-rtlib-debug-source
99 The loading invocations above install all supported Scheme
100 implementations. You can list explicitly the ones that you want by
101 setting the variable =geiser-active-implementations= *before* loading
102 geiser.el. For instance:
105 (setq geiser-active-implementations '(chicken guile))
108 On opening a scheme file, Geiser will try to guess its Scheme,
109 defaulting to the first in the list. Use =C-c C-s= to select the
110 implementation by hand (on a per file basis).
112 Check the geiser customization group for some options with:
115 M-x customize-group RET geiser RET
118 In particular, customize =geiser-<impl>-binary=, which should point
119 to an executable in your path.
121 To start a REPL, =M-x geiser=.
123 ** Completion with company-mode
125 Geiser offers identifier and module name completion, bound to
126 =M-TAB= and =M-`= respectively. Only names visible in the current
129 While that is cool and all, things are even better: if you have
130 [[http://company-mode.github.io/][company mode]] installed, Geiser's completion will use it. Just
131 require company-mode and, from then on, any new scheme buffer or
134 * Quick key reference
136 (See also [[file:///home/jao/usr/jao/geiser/web/geiser_5.html#Cheat-sheet][the manual]]'s cheat sheet)
138 ** In Scheme buffers:
140 |-------------+--------------------------------------------------|
141 | C-c C-s | Specify Scheme implementation for buffer |
142 | C-c C-z | Switch to REPL |
143 | C-c C-a | Switch to REPL and current module |
145 |-------------+--------------------------------------------------|
146 | M-. | Go to definition of identifier at point |
147 | M-, | Go back to where M-. was last invoked |
148 | C-c C-e m | Ask for a module and open its file |
149 | C-c C-e C-l | Add a given directory to Scheme's load path |
150 | C-c C-e [ | Toggle between () and [] for current form |
151 | c-c C-e \ | Insert λ |
153 |-------------+--------------------------------------------------|
154 | C-M-x | Eval definition around point |
155 | C-c C-c | Eval definition around point |
156 | C-c M-e | Eval definition around point and switch to REPL |
157 | C-x C-e | Eval sexp before point |
158 | C-c C-r | Eval region |
159 | C-c M-r | Eval region and switch to REPL |
160 | C-c C-b | Eval buffer |
161 | C-c M-b | Eval buffer and switch to REPL |
163 |-------------+--------------------------------------------------|
164 | C-c C-m x | Macro-expand definition around point |
165 | C-c C-m e | Macro-expand sexp before point |
166 | C-c C-m r | Macro-expand region |
168 |-------------+--------------------------------------------------|
169 | C-c C-k | Compile and load current buffer |
170 | C-c C-l | Load scheme file |
171 | C-u C-c C-k | Compile and load current buffer, restarting REPL |
173 |-------------+--------------------------------------------------|
174 | C-c C-d d | See documentation for identifier at point |
175 | C-c C-d s | See short documentation for identifier at point |
176 | C-c C-d i | Look up manual for identifier at point |
177 | C-c C-d m | See a list of a module's exported identifiers |
178 | C-c C-d a | Toggle autodoc mode |
180 |-------------+--------------------------------------------------|
181 | C-c < | Show callers of procedure at point |
182 | C-c > | Show callees of procedure at point |
184 |-------------+--------------------------------------------------|
185 | M-TAB | Complete identifier at point |
186 | M-`, C-. | Complete module name at point |
187 | TAB | Complete identifier at point or indent |
188 | | (If geiser-mode-smart-tab-p is t) |
189 |-------------+--------------------------------------------------|
193 |-------------+----------------------------------------------------|
194 | C-c C-z | Start Scheme REPL, or jump to previous buffer |
195 | C-c M-o | Clear scheme output |
196 | C-c C-q | Kill Scheme process |
197 | C-c C-l | Load scheme file |
198 | C-c C-k | Nuke REPL: use it if the REPL becomes unresponsive |
200 |-------------+----------------------------------------------------|
201 | M-. | Edit identifier at point |
202 | TAB, M-TAB | Complete identifier at point |
203 | M-`, C-. | Complete module name at point |
204 | M-p, M-n | Prompt history, matching current prefix |
206 |-------------+----------------------------------------------------|
208 | C-c [ | Toggle between () and [] for current form |
210 |-------------+----------------------------------------------------|
211 | C-c C-m | Set current module |
212 | C-c C-i | Import module into current namespace |
213 | C-c C-r | Add a given directory to scheme's load path |
215 |-------------+----------------------------------------------------|
216 | C-c C-d C-d | See documentation for symbol at point |
217 | C-c C-d C-m | See documentation for module |
218 | C-c C-d C-a | Toggle autodoc mode |
219 |-------------+----------------------------------------------------|
221 ** In the documentation browser:
223 |----------+----------------------------------------------|
225 | b | Previous page |
227 |----------+----------------------------------------------|
228 | TAB, n | Next link |
229 | S-TAB, p | Previous link |
231 | P | Previous section |
233 |----------+----------------------------------------------|
234 | k | Kill current page and go to previous or next |
235 | g, r | Refresh page |
236 | c | Clear browsing history |
238 |----------+----------------------------------------------|
239 | ., M-. | Edit identifier at point |
240 | z | Switch to REPL |
242 |----------+----------------------------------------------|
244 |----------+----------------------------------------------|
246 ** In backtrace (evaluation/compile result) buffers:
248 - =M-g n=, =M-g p=, =C-x `= for error navigation.
249 - =q= to bury buffer.