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, Geiser's website
26 (http://www.nongnu.org/geiser/) contains a nicer manual, also
27 included in Geiser tarballs as a texinfo file (doc/geiser.info).
31 Geiser needs Emacs 23.2 or better, and at least one of the
32 supported scheme implementations:
33 - Guile 2.0 or better.
34 - PLT Racket 6.0 or better.
35 - Chicken 4.8.0 or better.
39 The easiest way is to use ELPA/Marmalade, and just type
40 `M-x install-package RET geiser` inside emacs.
42 Geiser can be used either directly from its uninstalled source tree
43 or byte-compiled and installed after performing the standard
44 configure/make/make install dance. See the INSTALL file for more details.
47 These steps are necessary to fully support Chicken Scheme, but are
48 not required for any other scheme.
50 - Install the necessary support eggs:
51 $ chicken-install -s apropos chicken-doc
52 - Update the Chicken documentation database:
53 $ cd `csi -p '(chicken-home)'`
54 $ curl http://3e8.org/pub/chicken-doc/chicken-doc-repo.tgz | sudo tar zx
58 The loading invocations above install all supported Scheme
59 implementations. You can list explicitly the ones that you want by
60 setting the variable `geiser-active-implementations' *before*
61 loading geiser.el. For instance:
63 (setq geiser-active-implementations '(chicken guile))
65 On opening a scheme file, Geiser will try to guess its Scheme,
66 defaulting to the first in the list. Use `C-c C-s' to select the
67 implementation by hand (on a per file basis).
69 Check the geiser customization group for some options with:
71 M-x customize-group RET geiser RET
73 In particular, customize `geiser-<impl>-binary', which should point
74 to an executable in your path.
76 To start a REPL, M-x geiser.
78 ** Completion with company-mode
80 Geiser offers identifier and module name completion, bound to
81 M-TAB and M-` respectively. Only names visible in the current
84 While that is cool and all, things are even better: if you have
85 company-mode (http://company-mode.github.io/) installed,
86 Geiser's completion will use it. Just require company-mode and,
87 from then on, any new scheme buffer or REPL will use it.
93 |-------------+-------------------------------------------------|
94 | C-c C-z | Switch to REPL |
95 | C-c C-a | Switch to REPL and current module |
96 | C-c C-s | Specify Scheme implementation for buffer |
97 |-------------+-------------------------------------------------|
98 | M-. | Go to definition of identifier at point |
99 | M-, | Go back to where M-. was last invoked |
100 | C-c C-e m | Ask for a module and open its file |
101 | C-c C-e C-l | Add a given directory to Scheme's load path |
102 | C-c C-e [ | Toggle between () and [] for current form |
103 |-------------+-------------------------------------------------|
104 | C-M-x | Eval definition around point |
105 | C-c M-e | Eval definition around point and switch to REPL |
106 | C-x C-e | Eval sexp before point |
107 | C-c C-r | Eval region |
108 | C-c M-r | Eval region and switch to REPL |
109 | C-c C-b | Eval buffer |
110 | C-c M-b | Eval buffer and switch to REPL |
111 |-------------+-------------------------------------------------|
112 | C-c C-m x | Macro-expand definition around point |
113 | C-c C-m e | Macro-expand sexp before point |
114 | C-c C-m r | Macro-expand region |
115 |-------------+-------------------------------------------------|
116 | C-c C-k | Compile and load current file |
117 |-------------+-------------------------------------------------|
118 | C-c C-d d | See documentation for identifier at point |
119 | C-c C-d s | See short documentation for identifier at point |
120 | C-c C-d i | Look up manual for identifier at point |
121 | C-c C-d m | See a list of a module's exported identifiers |
122 | C-c C-d a | Toggle autodoc mode |
123 |-------------+-------------------------------------------------|
124 | C-c < | Show callers of procedure at point |
125 | C-c > | Show callees of procedure at point |
126 |-------------+-------------------------------------------------|
127 | M-TAB | Complete identifier at point |
128 | M-`, C-. | Complete module name at point |
129 | TAB | Complete identifier at point or indent |
130 | | (If `geiser-mode-smart-tab-p' is t) |
131 |-------------+-------------------------------------------------|
135 |-------------+----------------------------------------------------|
136 | C-c C-z | Start Scheme REPL, or jump to previous buffer |
137 | C-c M-o | Clear scheme output |
138 | C-c C-q | Kill Scheme process |
139 | C-c C-k | Nuke REPL: use it if the REPL becomes unresponsive |
140 |-------------+----------------------------------------------------|
141 | M-. | Edit identifier at point |
142 | TAB, M-TAB | Complete identifier at point |
143 | M-`, C-. | Complete module name at point |
144 | M-p, M-n | Prompt history, matching current prefix |
145 |-------------+----------------------------------------------------|
146 | C-c C-m | Set current module |
147 | C-c C-i | Import module into current namespace |
148 | C-c C-r | Add a given directory to scheme's load path |
149 |-------------+----------------------------------------------------|
150 | C-c C-d C-d | See documentation for symbol at point |
151 | C-c C-d C-m | See documentation for module |
152 | C-c C-d C-a | Toggle autodoc mode |
153 |-------------+----------------------------------------------------|
155 ** In the documentation browser:
157 |----------+----------------------------------------------|
159 | b | Previous page |
160 |----------+----------------------------------------------|
161 | TAB, n | Next link |
162 | S-TAB, p | Previous link |
164 | P | Previous section |
165 |----------+----------------------------------------------|
166 | k | Kill current page and go to previous or next |
167 | g, r | Refresh page |
168 | c | Clear browsing history |
169 |----------+----------------------------------------------|
170 | ., M-. | Edit identifier at point |
171 | z | Switch to REPL |
172 |----------+----------------------------------------------|
174 |----------+----------------------------------------------|
176 ** In backtrace (evaluation/compile result) buffers:
178 - M-g n, M-g p, C-x ` for error navigation.