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1 *os_risc.txt* For Vim version 7.3f. Last change: 2010 Aug 07
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4 VIM REFERENCE MANUAL by Thomas Leonard
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7 *riscos* *RISCOS* *RISC-OS*
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8 This file contains the particularities for the RISC OS version of Vim.
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10 The RISC OS port is a completely new port and is not based on the old "archi"
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11 port.
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12
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13 1. File locations |riscos-locations|
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14 2. Filename munging |riscos-munging|
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15 3. Command-line use |riscos-commandline|
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16 4. Desktop (GUI) use |riscos-gui|
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17 5. Remote use (telnet) |riscos-remote|
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18 6. Temporary files |riscos-temp-files|
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19 7. Interrupting |riscos-interrupt|
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20 8. Memory usage |riscos-memory|
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21 9. Filetypes |riscos-filetypes|
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22 10. The shell |riscos-shell|
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23 11. Porting new releases |riscos-porting|
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24
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25 If I've missed anything, email me and I'll try to fix it. In fact, even if I
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26 haven't missed anything then email me anyway to give me some confidence that it
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27 actually works!
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28
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29 Thomas Leonard <tal197@ecs.soton.ac.uk>
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30
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31 [these URLs no longer work...]
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32 Port homepage: http://www.ecs.soton.ac.uk/~tal197/
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33 or try: http://www.soton.ac.uk/~tal197/
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34
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35 ==============================================================================
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36 *riscos-locations*
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37 1. File locations
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38
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39 The Vim executable and shared resource files are all stored inside the !Vim
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40 application directory.
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41
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42 When !Vim is first seen by the filer, it aliases the *vi and *ex commands to
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43 run the command-line versions of Vim (see |riscos-commandline|).
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44
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45 !Vim.Resources and !Vim.Resources2 contain the files from the standard Vim
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46 distribution, but modified slightly to work within the limits of ADFS, plus
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47 some extra files such as the window templates.
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48
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49 User choices are read from "Choices:*" and are saved to "<Choices$Write>.*".
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50 If you have the new !Boot structure then these should be set up already. If
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51 not, set Choices$Path to a list of directories to search when looking for
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52 user configuration files. Set Choices$Write to the directory you want files
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53 to be saved into (so your search patterns and marks can be remembered between
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54 sessions).
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55
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56 ==============================================================================
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57 *riscos-munging*
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58 2. Filename munging
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59
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60 All pathname munging is disabled by default, so Vim should behave like a
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61 normal RISC OS application now. So, if you want to edit "doc/html" then you
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62 actually type "*vi doc/html".
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63
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64 The only times munging is done is when:
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65
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66 - Searching included files from C programs, since these are always munged.
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67 See |[I|.
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68 Note: make sure you are in the right directory when you use this
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69 command (i.e. the one with subdirectories "c" and "h").
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70
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71 - Sourcing files using |:so|.
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72 Paths starting "$VIM/" are munged like this:
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73
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74 $VIM/syntax/help.vim -> Vim:syntax.help
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75
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76 Also, files ending in ".vim" have their extensions removed, and slashes
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77 replaced with dots.
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78
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79 Some tag files and script files may have to be edited to work under this port.
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80
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81 ==============================================================================
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82 *riscos-commandline*
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83 3. Command-line use
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84
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85 To use Vim from the command-line use the "*vi" command (or "*ex" for
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86 |Ex-mode|).
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87
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88 Type "*vi -h" for a list of options.
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89
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90 Running the command-line version of Vim in a large high-color mode may cause
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91 the scrolling to be very slow. Either change to a mode with fewer colors or
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92 use the GUI version.
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93
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94 Also, holding down Ctrl will slow it down even more, and Ctrl-Shift will
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95 freeze it, as usual for text programs.
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96
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97 ==============================================================================
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98 *riscos-gui*
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99 4. Desktop use
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100
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101 Limitations:
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102
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103 - Left scrollbars don't work properly (right and bottom are fine).
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104 - Doesn't increase scroll speed if it gets behind.
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105
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106 You can resize the window by dragging the lower-right corner, even though
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107 there is no icon shown there.
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108
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109 You can use the --rows and --columns arguments to specify the initial size of
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110 the Vim window, like this: >
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111
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112 *Vi -g --rows 20 --columns 80
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113
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114 The global clipboard is supported, so you can select some text and then
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115 paste it directly into another application (provided it supports the
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116 clipboard too).
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117
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118 Clicking Menu now opens a menu like a normal RISC OS program. Hold down Shift
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119 when clicking Menu to paste (from the global clipboard).
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120
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121 Dragging a file to the window replaces the CURRENT buffer (the one with the
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122 cursor, NOT the one you dragged to) with the file.
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123
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124 Dragging with Ctrl held down causes a new Vim window to be opened for the
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125 file (see |:sp|).
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126
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127 Dragging a file in with Shift held down in insert mode inserts the pathname of
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128 the file.
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129
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130 :browse :w opens a standard RISC OS save box.
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131 :browse :e opens a directory viewer.
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132
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133 For fonts, you have the choice of the system font, an outline font, the system
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134 font via ZapRedraw and any of the Zap fonts via ZapRedraw: >
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135
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136 :set guifont=
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137 < To use the system font via the VDU drivers. Supports
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138 bold and underline.
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139 >
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140 :set guifont=Corpus.Medium
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141 < Use the named outline font. You can use any font, but
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142 only monospaced ones like Corpus look right.
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143 >
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144 :set guifont=Corpus.Medium:w8:h12:b:i
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145 < As before, but with size of 8 point by 12 point, and
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146 in bold italic.
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147 If only one of width and height is given then that
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148 value is used for both. If neither is given then 10
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149 point is used.
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150
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151 Thanks to John Kortink, Vim can use the ZapRedraw module. Start the font name
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152 with "!" (or "!!" for double height), like this: >
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153
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154 :set guifont=!!
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155 < Use the system font, but via ZapRedraw. This gives a
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156 faster redraw on StrongARM processors, but you can't
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157 get bold or italic text. Double height.
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158 >
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159 :set guifont=!script
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160 < Uses the named Zap font (a directory in VimFont$Path).
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161 The redraw is the same speed as for "!!", but you get
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162 a nicer looking font.
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163 Only the "man+" and "script" fonts are supplied
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164 currently, but you can use any of the Zap fonts if
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165 they are in VimFont$Path.
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166 Vim will try to load font files "0", "B", "I" and "IB"
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167 from the named directory. Only "0" (normal style) MUST
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168 be present. Link files are not currently supported.
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169
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170 Note that when using ZapRedraw the edit bar is drawn in front of the character
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171 you are on rather than behind it. Also redraw is incorrect for screen modes
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172 with eigen values of 0. If the font includes control characters then you can
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173 get Vim to display them by changing the 'isprint' option.
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174
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175 If you find the scrolling is too slow on your machine, try experimenting
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176 with the 'scrolljump' and 'ttyscroll' options.
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177
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178 In particular, StrongARM users may find that: >
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179
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180 :set ttyscroll=0
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181
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182 makes scrolling faster in high-color modes.
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183
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184 =============================================================================
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185 *riscos-remote*
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186 5. Remote use (telnet)
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187
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188 I have included a built-in termcap entry, but you can edit the termcap file to
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189 allow other codes to be used if you want to use Vim from a remote terminal.
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190
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191 Although I do not have an internet connection to my Acorn, I have managed to
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192 run Vim in a FreeTerm window using the loopback connection.
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193
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194 It seems to work pretty well now, using "*vi -T ansi".
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195
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196 ==============================================================================
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197 *riscos-temp-files*
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198 6. Temporary files
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199
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200 If Vim crashes then the swap and backup files (if any) will be in the
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201 directories set with the 'directory' and 'bdir' options. By default the swap
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202 files are in <Wimp$ScrapDir> (i.e. inside !Scrap) and backups are in the
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203 directory you were saving to. Vim will allow you to try and recover the file
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204 when you next try to edit it.
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205
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206 To see a list of swap files, press <F12> and type "*vi -r".
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207
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208 Vim no longer brings up ATTENTION warnings if you try to edit two files with
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209 the same name in different directories.
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210
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211 However, it also no longer warns if you try to edit the same file twice (with
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212 two copies of Vim), though you will still be warned when you save that the
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213 datestamp has changed.
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214
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215 ==============================================================================
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216 *riscos-interrupt*
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217 7. Interrupting
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218
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219 To break out of a looping macro, or similar, hold down Escape in the
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220 command-line version, or press CTRL-C in the GUI version.
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221
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222 ==============================================================================
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223 *riscos-memory*
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224 8. Memory usage
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225
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226 Vim will use dynamic areas on RISC OS 3.5 or later. If you can use them on
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227 older machines then edit the !RunTxt and GVim files. I don't know what UnixLib
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228 does by default on these machines so I'm playing safe.
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229
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230 It doesn't work at all well without dynamic areas, since it can't change its
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231 memory allocation once running. Hence you should edit "!Vim.GVim" and
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232 "!Vim.!RunTxt" to choose the best size for you. You probably need at least
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233 about 1400K.
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234
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235 ==============================================================================
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236 *riscos-filetypes*
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237 9. Filetypes
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238
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239 You can now specify that autocommands are only executed for files of certain
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240 types. The filetype is given in the form &xxx, when xxx is the filetype.
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241
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242 Filetypes must be specified by number (e.g. &fff for Text).
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243
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244 The system has changed from version 5.3. The new sequence of events is:
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245
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246 - A file is loaded. |'osfiletype'| is set to the RISC OS filetype.
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247 - Based on the filetype and pathname, Vim will try to set |'filetype'| to the
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248 Vim-type of the file.
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249 - Setting this option may load syntax files and perform other actions.
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250 - Saving the file will give it a filetype of |'osfiletype'|.
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251
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252 Some examples may make this clearer:
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253
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254 Kind of file loaded osfiletype filetype ~
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255 C code "c.hellow" Text (&fff) C
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256 LaTeX document LaTeX (&2a8) TeX
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257 Draw document DrawFile (&aff) (not changed)
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258
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259 ==============================================================================
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260 *riscos-shell*
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261 10. The shell
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262
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263 - Bangs (!s) are only replaced if they are followed by a space or end-of-line,
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264 since many pathnames contain them.
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265
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266 - You can prefix the command with "~", which stops any output from being
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267 displayed. This also means that you don't have to press <Enter> afterwards,
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268 and stops the screen from being redrawn. {only in the GUI version}
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269
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270 ==============================================================================
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271 *riscos-porting*
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272 11. Porting new releases to RISC OS
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273
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274 Downloading everything you need:
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275
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276 - Get the latest source distribution (see www.vim.org)
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277 - Get the runtime environment files (e.g. these help files)
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278 - Get the RISC OS binary distribution (if possible)
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279
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280
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281 Unarchiving:
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282
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283 - Create a raFS disk and put the archives on it
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284 - Un-gzip them
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285 - Un-tar them (*tar xELf 50 archive/tar)
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286
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287
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288 Recompiling the sources:
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289
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290 - Create c, s, and h directories.
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291 - Put all the header files in "h". \
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292 - Put all the C files in "c". | And lose the extensions
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293 - Put the assembler file ("swis/s") in "s". /
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294 - Rename all the files in "proto" to "h", like this:
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295 raFS::VimSrc.source.proto.file/pro
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296 becomes
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297 raFS::VimSrc.source.h.file_pro
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298 - In the files "h.proto" and "c.termlib", search and replace
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299 .pro"
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300 with
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301 _pro.h"
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302 - Create a simple Makefile if desired and do "*make -k".
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303 Use "CC = gcc -DRISCOS -DUSE_GUI -O2 -x c" in the Makefile.
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304 - Save the binary as !Vim.Vim in the binary distribution.
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305
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306
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307 Updating the run-time environment:
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308
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309 - Replace old or missing files inside !Vim.Resources with the
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310 new files.
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311 - Remove files in "doc" not ending in "/txt", except for "tags".
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312 - Lose the extensions from the files in "doc".
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313 - Edit the "doc.tags" file. Remove extensions from the second column: >
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314 :%s/^\(.[^\t]*\t.*\)\.txt\t/\1\t/
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236
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315 - Remove extensions from the syntax files. Split them into two directories
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316 to avoid the 77 entry limit on old ADFS filesystems.
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317 - Edit "Vim:FileType" to match "*.c.*" as well as "*/c" and so on.
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318 Add filetype checking too.
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319 - Edit "Vim:Menu" and remove all the keys from the menus: >
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320 :%s/<Tab>[^ \t]*//
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321 <
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322 vim:tw=78:ts=8:ft=help:norl:
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