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- STk(n) A STk(n)
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-
- _________________________________________________________________
-
- NNAAMMEE
- stk, snow - A Scheme interpreter using the Tk toolkit
-
- SSYYNNOOPPSSIISS
- ssttkk [_o_p_t_i_o_n_s] [_a_r_g _a_r_g _._._.]
- ssnnooww [_o_p_t_i_o_n_s] [_a_r_g _a_r_g _._._.]
-
- OOPPTTIIOONNSS
- ssttkk interpreter accepts several command-line options which
- may be abbreviated, as long as the abbreviation is unam-
- biguous (e.g. --hh, --hhee, --hheell are three possibe abbrevia-
- tions for the --hheellpp option).
-
-
- --ddiissppllaayy _d_i_s_p_l_a_y
- Display (and screen) on which to display
- window.
-
- --ffiillee _f_i_l_e_N_a_m_e Read commands from _f_i_l_e_N_a_m_e rather than
- standard input. The last element in _f_i_l_e_-
- _N_a_m_e will be used as the title for the
- application and name of its interpreter for
- sseenndd commands (unless overridden by the
- --nnaammee option).
-
- --ggeeoommeettrryy _g_e_o_m_e_t_r_y
- Initial geometry to use for window.
-
- --nnaammee _n_a_m_e Use _n_a_m_e as the title to be displayed in
- the window, and as the name of the inter-
- preter for sseenndd commands.
-
- --nneeww--ccoolloorrmmaapp Specifies that the main window should have
- a new private colormap instead of using the
- default colormap for the screen.
-
- --ssyynncc Execute all X server commands syn-
- chronously, so that errors are reported
- immediately. This will result in much
- slower execution, but it is useful for
- debugging.
-
- --vviissuuaall _v_i_s_u_a_l Specifies the visual to use for the
- window._V_i_s_u_a_l may be one of the fol-
- lowing: _b_e_s_t, _d_i_r_e_c_t_c_o_l_o_r, _g_r_a_y_s_c_a_l_e,
- _g_r_e_y_s_c_a_l_e, _p_s_e_u_d_o_c_o_l_o_r, _s_t_a_t_i_c_c_o_l_o_r,
- _s_t_a_t_i_c_g_r_a_y, _s_t_a_t_i_c_g_r_e_y, _t_r_u_e_c_o_l_o_r, or
- _d_e_f_a_u_l_t
-
- --nnoo--ttkk Don't initialize the Tk toolkit
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- --llooaadd _f_i_l_e_N_a_m_e Evaluate expressions contained in _f_i_l_e_N_a_m_e
-
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- STk(n) A STk(n)
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- before reading expressions from standard
- input.
-
- --iimmaaggee _f_i_l_e_N_a_m_e
- Restore the state saved in _f_i_l_e_N_a_m_e by the
- _d_u_m_p primitive (Note: For now, _d_u_m_p works
- only on SunOS 4.1.x, Linux 1.x (a.out for-
- mat) and FreeBSD).
-
- --cceellllss _n_u_m_b_e_r Set the default size for the heap to _n_u_m_b_e_r
- cells. The given number is also the amount
- of cells used when extending the heap.
- Default value is 20000.
-
- --iinntteerraaccttiivvee Tell the interpreter that it is used inter-
- actively (even if it doesn't think so).
-
- --hheellpp Print a summary of the command-line options
- and exit.
-
- ---- Pass all remaining arguments through
- to the script's aarrggvv variable without
- interpreting them. This provides a
- mechanism for passing arguments such
- as --nnaammee to a script instead of having
- wwiisshh interpret them.
- _________________________________________________________________
-
-
- DDEESSCCRRIIPPTTIIOONN
- SSttkk is a Scheme R4RS interpreter which provide a simple
- access to the X11 Tk toolkit. If the --nnoo--ttkk option is pro-
- vided to the interpreter, the Tk library is not initial-
- ized and no main window is created. If ssttkk is invoked
- with no --ff option then it reads Scheme expressions inter-
- actively from standard input. It will continue processing
- commands until all windows have been deleted or until end-
- of-file is reached on standard input.
-
-
- SSnnooww is a _l_i_g_h_t version of the ssttkk interpreter which does
- not provide support for the Tk toolkit. This interpreter
- does not recognize the options --ddiissppllaayy, --ggeeoommeettrryy, --ssyynncc
- and --nnoo--ttkk which are meaningless without Tk. This inter-
- preter is called, rather than the standard one, when the
- shell DISPLAY variable is not initialized.
-
-
- If the --ffiillee option is provided to Tk, then ssttkk reads
- Scheme forms from the file named in the --ffiillee option.
- These forms will normally create an interactive interface
- consisting of one or more widgets. When the end of the
- command file is reached, ssttkk will continue to respond to X
- events until all windows have been deleted.
-
-
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- STk(n) A STk(n)
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- The --iinntteerraaccttiivvee option forces the interpreter in interac-
- tive mode. In this mode, standard output and standard
- error are unbuffered. Use this option when you launch ssttkk
- from eemmaaccss.
-
-
-
- VVAARRIIAABBLLEESS
- Following Scheme variables are set when SSttkk starts:
-
- **aarrggcc** Contains a count of the number of _a_r_g argu-
- ments (0 if none), not including the
- options described above.
-
- **aarrggvv** Contains a Scheme list whose elements are
- the _a_r_g arguments (not including the
- options described above), in order, or an
- empty list if there are no _a_r_g arguments.
-
- **pprrooggrraamm--nnaammee** Contains _f_i_l_e_N_a_m_e if it was specified.
- Otherwise, contains the name by which ssttkk
- was invoked.
-
-
-
- SSCCRRIIPPTT FFIILLEESS
- If you create a STk script in a file whose first line is
-
- ##!!//uussrr//llooccaall//bbiinn//ssttkk --ff
-
- then you can invoke the script file directly from your
- shell if you mark it as executable. This assumes that ssttkk
- has been installed in the default location in
- /usr/local/bin; if it's installed somewhere else then
- you'll have to modify the above line to match.
-
-
- EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS
- ssttkk uses the following shell variables:
-
- _S_T_K___L_I_B_R_A_R_Y This variable indicates where the library
- files are located. This variable allows to
- overload the default value of the Scheme
- variable _*_s_t_k_-_l_i_b_r_a_r_y_* which is automati-
- cally calculated by the interpreter.(i.e.
- _s_t_k or _s_n_o_w).
-
- _S_T_K___L_O_A_D___P_A_T_H This variable serves to initialize the
- _*_l_o_a_d_-_p_a_t_h_* Scheme variable. This variable
- is a list of paths to try when in a load
- command.
-
- _S_T_K___H_E_L_P___P_A_T_H This variable serves to initialize the
- _*_h_e_l_p_-_p_a_t_h_* Scheme variable. It must
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- STk(n) A STk(n)
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- contain a list of documentation directo-
- ries. This variable is used by the help
- procedure.
-
-
-
- FFIILLEESS
- _._/_i_n_i_t_._s_t_k
-
- _$_S_T_K___L_I_B_R_A_R_Y_/_S_T_k_/_i_n_i_t_._s_t_k
- When ssttkk starts running, it tries to load
- the file _i_n_i_t_._s_t_k in the current directory.
- If this file is not present, it tries to
- load this file in the SSTTkk__LLIIBBRRAARRYY directory
- (the value of SSTTkk__LLIIBBRRAARRYY is automatically
- computed to be in a sibling directory of
- the interpreter executable.
-
-
- _~_/_._s_t_k_r_c Standard _i_n_i_t_._s_t_k file tries to load the
- file _~_/_._s_t_k_r_c. This file can be used to
- store function definitions or variables
- settings that you want to be executed at
- each interpretater invocation.
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- SSEEEE AALLSSOO
- wish(1)
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