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 * Supported scheme implementations
25 - Guile 2.0 (not released yet: use the latest git master branch).
26 - PLT Racket 5.0.1 or better.
29 Geiser can be used either directly from its uninstalled source tree
30 or byte-compiled and installed after perfoming the standard
31 configure/make/make install dance.
34 - Extract the tarball or clone the git repository anywhere in your
35 file system. Let's call that place <path-to-geiser>.
38 (load-file "<path-to-geiser>/elisp/geiser.el")
41 - Create a build directory, `build', say:
43 $ mkdir build; cd build
45 $ ../configure && make
49 (you might need to get root access, depending on your installation
50 directory) and require 'geiser-install (not 'geiser, mind you) in
51 your emacs initialization file:
53 (require 'geiser-install)
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-impl-installed-implementations' *before*
61 loading geiser.el. For instance:
63 (setq geiser-impl-installed-implementations '(racket 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-repl-<impl>-binary' (in
74 geiser-repl), which should point to an executable in your path.
76 To start a REPL, M-x geiser.
78 *** Completion with company-mode
79 Geiser offers identifier and module name completion, bound to
80 M-TAB and M-` respectively. Only names visible in the current
83 While that is cool and all, things are even better: if you have
84 [[http://nschum.de/src/emacs/company-mode/][company-mode]] installed, Geiser's completion will use it. Just
85 require company-mode and, from then on, any new scheme buffer or
86 REPL will use it. If you didn't know about Nikolaj Schumacher's
87 awesome mode, check [[http://www.screentoaster.com/watch/stU0lSRERIR1pYRFVdXVlRVFFV/company_mode_for_gnu_emacs][this screencast]].
91 *** In Scheme buffers:
93 |---------------------+-------------------------------------------------|
94 | C-c C-z | Switch to REPL |
95 | C-u C-c C-z | 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 |---------------------+-------------------------------------------------|
102 | C-M-x | Eval definition around point |
103 | C-c M-e | Eval definition around point and switch to REPL |
104 | C-x C-e | Eval sexp before point |
105 | C-c C-r | Eval region |
106 | C-c M-r | Eval region and switch to REPL |
107 |---------------------+-------------------------------------------------|
108 | C-c C-m x | Macro-expand definition around point |
109 | C-c C-m e | Macro-expand sexp before point |
110 | C-c C-m r | Marcro-expand region |
111 | C-u C-c C-m [x,e,r] | (With prefix, macro expansions are recursive) |
112 |---------------------+-------------------------------------------------|
113 | C-c C-k | Compile and load current file |
114 | C-c C-l | Load current file |
115 |---------------------+-------------------------------------------------|
116 | C-c C-d d | See documentation for identifier at point |
117 | C-c C-d m | See a list of a module's exported identifiers |
118 | C-c C-d a | Toggle autodoc mode |
119 |---------------------+-------------------------------------------------|
120 | C-c< | Show callers of procedure at point |
121 | C-c> | Show callees of procedure at point |
122 | C-c C-x f | See a generic's methods signatures |
123 |---------------------+-------------------------------------------------|
124 | M-TAB | Complete identifier at point |
125 | M-`, C-. | Complete module name at point |
126 | TAB | Complete identifier at point or indent |
127 | | (If `geiser-mode-smart-tab-p' is t) |
128 |---------------------+-------------------------------------------------|
132 |-------------+----------------------------------------------------|
133 | C-c C-z | Start Scheme REPL, or jump to previous buffer |
134 | C-c C-q | Kill Scheme process |
135 |-------------+----------------------------------------------------|
136 | M-. | Edit identifier at point |
137 | TAB, M-TAB | Complete identifier at point |
138 | M-`, C-. | Complete module name at point |
139 |-------------+----------------------------------------------------|
140 | M-p, M-n | Prompt history, matching current prefix |
141 |-------------+----------------------------------------------------|
142 | C-c C-k | Nuke REPL: use it if the REPL becomes unresponsive |
143 |-------------+----------------------------------------------------|
144 | C-c C-m | Set current module |
145 | C-c C-i | Import module into current namespace |
146 | C-c C-l | Load scheme file |
147 |-------------+----------------------------------------------------|
148 | C-c C-d C-d | See documentation for symbol at point |
149 | C-c C-d C-m | See documentation for module |
150 | C-c C-d C-a | Toggle autodoc mode |
151 |-------------+----------------------------------------------------|
153 *** In the documentation browser:
155 |------------+----------------------------------------------|
157 | p, b | Previous page |
158 | TAB, S-TAB | Next/previous link |
159 | k | Kill current page and go to previous or next |
160 | g, r | Refresh page |
161 | c | Clear browsing history |
162 | ., M-. | Edit identifier at point |
163 | z | Switch to REPL |
165 |------------+----------------------------------------------|
167 *** In backtrace (evaluation/compile result) buffers:
169 - TAB, M-TAB for error navigation.