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1 *sign.txt* For Vim version 7.0. Last change: 2006 Apr 24
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4 VIM REFERENCE MANUAL by Gordon Prieur
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5 and Bram Moolenaar
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7
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8 Sign Support Features *sign-support*
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9
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10 1. Introduction |sign-intro|
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11 2. Commands |sign-commands|
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12
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13 {Vi does not have any of these features}
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14 {only available when compiled with the |+signs| feature}
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15
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16 ==============================================================================
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17 1. Introduction *sign-intro* *signs*
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18
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19 When a debugger or other IDE tool is driving an editor it needs to be able
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20 to give specific highlights which quickly tell the user useful information
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21 about the file. One example of this would be a debugger which had an icon
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22 in the left-hand column denoting a breakpoint. Another example might be an
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23 arrow representing the Program Counter (PC). The sign features allow both
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24 placement of a sign, or icon, in the left-hand side of the window and
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25 definition of a highlight which will be applied to that line. Displaying the
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26 sign as an image is most likely only feasible in gvim (although Sun
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27 Microsystem's dtterm does support this it's the only terminal emulator I know
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28 of which does). A text sign and the highlight should be feasible in any color
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29 terminal emulator.
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30
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31 Signs and highlights are not useful just for debuggers. Sun's Visual
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32 WorkShop uses signs and highlights to mark build errors and SourceBrowser
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33 hits. Additionally, the debugger supports 8 to 10 different signs and
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34 highlight colors. |workshop| Same for Netbeans |netbeans|.
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35
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36 There are two steps in using signs:
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37
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38 1. Define the sign. This specifies the image, text and highlighting. For
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39 example, you can define a "break" sign with an image of a stop roadsign and
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40 text "!!".
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41
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42 2. Place the sign. This specifies the file and line number where the sign is
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43 displayed. A defined sign can be placed several times in different lines
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44 and files.
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45
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46 When signs are defined for a file, Vim will automatically add a column of two
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47 characters to display them in. When the last sign is unplaced the column
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48 disappears again. The color of the column is set with the SignColumn group
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49 |hl-SignColumn|. Example to set the color: >
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50
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51 :highlight SignColumn guibg=darkgrey
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52
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53 ==============================================================================
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54 2. Commands *sign-commands* *:sig* *:sign*
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55
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56 Here is an example that places a sign piet, displayed with the text ">>", in
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57 line 23 of the current file: >
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58 :sign define piet text=>> texthl=Search
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59 :exe ":sign place 2 line=23 name=piet file=" . expand("%:p")
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60
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61 And here is the command to delete it again: >
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62 :sign unplace 2
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63
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64 Note that the ":sign" command cannot be followed by another command or a
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65 comment. If you do need that, use the |:execute| command.
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66
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67
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68 DEFINING A SIGN. *:sign-define* *E255* *E160* *E612*
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69
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70 :sign define {name} {argument}...
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71 Define a new sign or set attributes for an existing sign.
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72 The {name} can either be a number (all digits) or a name
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73 starting with a non-digit.
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74 About 120 different signs can be defined.
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75
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76 Accepted arguments:
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77
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78 icon={pixmap}
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79 Define the file name where the bitmap can be found. Should be
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80 a full path. The bitmap should fit in the place of two
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81 characters. This is not checked. If the bitmap is too big it
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82 will cause redraw problems. Only GTK 2 can scale the bitmap
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83 to fit the space available.
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84 toolkit supports ~
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85 GTK 1 pixmap (.xpm)
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86 GTK 2 many
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87 Motif pixmap (.xpm)
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88
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89 linehl={group}
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90 Highlighting group used for the whole line the sign is placed
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91 in. Most useful is defining a background color.
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92
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93 text={text} *E239*
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94 Define the text that is displayed when there is no icon or the
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95 GUI is not being used. Only printable characters are allowed
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96 and they must occupy one or two display cells.
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97
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98 texthl={group}
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99 Highlighting group used for the text item.
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100
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101
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102 DELETING A SIGN *:sign-undefine* *E155*
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103
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104 :sign undefine {name}
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105 Deletes a previously defined sign. If signs with this {name}
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106 are still placed this will cause trouble.
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107
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108
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109 LISTING SIGNS *:sign-list* *E156*
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110
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111 :sign list Lists all defined signs and their attributes.
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112
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113 :sign list {name}
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114 Lists one defined sign and its attributes.
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115
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116
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117 PLACING SIGNS *:sign-place* *E158*
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118
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119 :sign place {id} line={lnum} name={name} file={fname}
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120 Place sign defined as {name} at line {lnum} in file {fname}.
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121 *:sign-fname*
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122 The file {fname} must already be loaded in a buffer. The
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123 exact file name must be used, wildcards, $ENV and ~ are not
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124 expanded, white space must not be escaped. Trailing white
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125 space is ignored.
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126
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127 The sign is remembered under {id}, this can be used for
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128 further manipulation. {id} must be a number.
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129 It's up to the user to make sure the {id} is used only once in
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130 each file (if it's used several times unplacing will also have
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131 to be done several times and making changes may not work as
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132 expected).
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133
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134 :sign place {id} line={lnum} name={name} buffer={nr}
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135 Same, but use buffer {nr}.
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136
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137 :sign place {id} name={name} file={fname}
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138 Change the placed sign {id} in file {fname} to use the defined
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139 sign {name}. See remark above about {fname} |:sign-fname|.
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140 This can be used to change the displayed sign without moving
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141 it (e.g., when the debugger has stopped at a breakpoint).
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142
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143 :sign place {id} name={name} buffer={nr}
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144 Same, but use buffer {nr}.
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145
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146
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147 REMOVING SIGNS *:sign-unplace* *E159*
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148
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149 :sign unplace {id} file={fname}
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150 Remove the previously placed sign {id} from file {fname}.
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151 See remark above about {fname} |:sign-fname|.
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152
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153 :sign unplace {id} buffer={nr}
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154 Same, but use buffer {nr}.
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155
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156 :sign unplace {id}
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157 Remove the previously placed sign {id} from all files it
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158 appears in.
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159
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160 :sign unplace *
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161 Remove all placed signs.
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162
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163 :sign unplace
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164 Remove the placed sign at the cursor position.
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165
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166
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167 LISTING PLACED SIGNS
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168
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169 :sign place file={fname}
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170 List signs placed in file {fname}.
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171 See remark above about {fname} |:sign-fname|.
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172
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173 :sign place buffer={nr}
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174 List signs placed in buffer {nr}.
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175
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176 :sign place List placed signs in all files.
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177
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178
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179 JUMPING TO A SIGN *:sign-jump* *E157*
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180
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181 :sign jump {id} file={fname}
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182 Open the file {fname} or jump to the window that contains
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183 {fname} and position the cursor at sign {id}.
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184 See remark above about {fname} |:sign-fname|.
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185 If the file isn't displayed in window and the current file can
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186 not be |abandon|ed this fails.
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187
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188 :sign jump {id} buffer={nr}
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189 Same, but use buffer {nr}.
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190
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191 vim:tw=78:ts=8:ft=help:norl:
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