341 lines
12 KiB
Plaintext
341 lines
12 KiB
Plaintext
*sign.txt* Nvim
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VIM REFERENCE MANUAL by Gordon Prieur
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and Bram Moolenaar
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Sign Support Features *sign-support*
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Type |gO| to see the table of contents.
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==============================================================================
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1. Introduction *sign-intro* *signs*
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When a debugger or other IDE tool is driving an editor it needs to be able
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to give specific highlights which quickly tell the user useful information
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about the file. One example of this would be a debugger which had an icon
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in the left-hand column denoting a breakpoint. Another example might be an
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arrow representing the Program Counter (PC). The sign features allow both
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placement of a sign, or icon, in the left-hand side of the window and
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definition of a highlight which will be applied to that line. Displaying the
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sign as an image is most likely only feasible in gvim (although Sun
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Microsystem's dtterm does support this it's the only terminal emulator I know
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of which does). A text sign and the highlight should be feasible in any color
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terminal emulator.
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Signs and highlights are not useful just for debuggers. There are plugins
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that use signs to mark build errors or display version control status.
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There are two steps in using signs:
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1. Define the sign. This specifies the image, text and highlighting. For
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example, you can define a "break" sign with an image of a stop roadsign and
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text "!!".
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2. Place the sign. This specifies the file and line number where the sign is
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displayed. A defined sign can be placed several times in different lines
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and files.
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*sign-column*
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When signs are defined for a file, Vim will automatically add a column of two
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characters to display them in. When the last sign is unplaced the column
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disappears again. This behavior can be changed with the 'signcolumn' option.
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The color of the column is set with the SignColumn group |hl-SignColumn|.
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Example to set the color: >
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:highlight SignColumn guibg=darkgrey
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<
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*sign-identifier*
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Each placed sign is identified by a number called the sign identifier. This
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identifier is used to jump to the sign or to remove the sign. The identifier
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is assigned when placing the sign using the |:sign-place| command or the
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|sign_place()| function. Each sign identifier should be a unique number. If
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multiple placed signs use the same identifier, then jumping to or removing a
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sign becomes unpredictable. To avoid overlapping identifiers, sign groups can
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be used. The |sign_place()| function can be called with a zero sign identifier
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to allocate the next available identifier.
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*sign-group*
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Each placed sign can be assigned to either the global group or a named group.
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When placing a sign, if a group name is not supplied, or an empty string is
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used, then the sign is placed in the global group. Otherwise the sign is
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placed in the named group. The sign identifier is unique within a group. The
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sign group allows Vim plugins to use unique signs without interfering with
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other plugins using signs.
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*sign-priority*
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Each placed sign is assigned a priority value. When multiple signs are placed
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on the same line, the attributes of the sign with the highest priority is used
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independent of the sign group. The default priority for a sign is 10. The
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priority is assigned at the time of placing a sign.
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When the line on which the sign is placed is deleted, the sign is moved to the
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next line (or the last line of the buffer, if there is no next line). When
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the delete is undone the sign does not move back.
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==============================================================================
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2. Commands *sign-commands* *:sig* *:sign*
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Here is an example that places a sign "piet", displayed with the text ">>", in
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line 23 of the current file: >
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:sign define piet text=>> texthl=Search
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:exe ":sign place 2 line=23 name=piet file=" . expand("%:p")
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And here is the command to delete it again: >
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:sign unplace 2
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Note that the ":sign" command cannot be followed by another command or a
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comment. If you do need that, use the |:execute| command.
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DEFINING A SIGN. *:sign-define* *E255* *E160* *E612*
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See |sign_define()| for the equivalent Vim script function.
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:sign define {name} {argument}...
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Define a new sign or set attributes for an existing sign.
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The {name} can either be a number (all digits) or a name
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starting with a non-digit. Leading zeros are ignored, thus
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"0012", "012" and "12" are considered the same name.
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About 120 different signs can be defined.
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Accepted arguments:
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icon={bitmap}
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Define the file name where the bitmap can be found. Should be
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a full path. The bitmap should fit in the place of two
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characters. This is not checked. If the bitmap is too big it
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will cause redraw problems.
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toolkit supports ~
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Win32 .bmp, .ico, .cur
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linehl={group}
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Highlighting group used for the whole line the sign is placed
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in. Most useful is defining a background color.
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numhl={group}
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Highlighting group used for 'number' column at the associated
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line. Overrides |hl-LineNr|, |hl-CursorLineNr|.
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text={text} *E239*
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Define the text that is displayed when there is no icon or the
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GUI is not being used. Only printable characters are allowed
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and they must occupy one or two display cells.
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texthl={group}
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Highlighting group used for the text item.
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DELETING A SIGN *:sign-undefine* *E155*
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See |sign_undefine()| for the equivalent Vim script function.
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:sign undefine {name}
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Deletes a previously defined sign. If signs with this {name}
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are still placed this will cause trouble.
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LISTING SIGNS *:sign-list* *E156*
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See |sign_getdefined()| for the equivalent Vim script function.
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:sign list Lists all defined signs and their attributes.
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:sign list {name}
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Lists one defined sign and its attributes.
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PLACING SIGNS *:sign-place* *E158*
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See |sign_place()| for the equivalent Vim script function.
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:sign place {id} line={lnum} name={name} file={fname}
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Place sign defined as {name} at line {lnum} in file {fname}.
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*:sign-fname*
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The file {fname} must already be loaded in a buffer. The
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exact file name must be used, wildcards, $ENV and ~ are not
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expanded, white space must not be escaped. Trailing white
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space is ignored.
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The sign is remembered under {id}, this can be used for
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further manipulation. {id} must be a number.
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It's up to the user to make sure the {id} is used only once in
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each file (if it's used several times unplacing will also have
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to be done several times and making changes may not work as
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expected).
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The following optional sign attributes can be specified before
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"file=":
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group={group} Place sign in sign group {group}
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priority={prio} Assign priority {prio} to sign
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By default, the sign is placed in the global sign group.
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By default, the sign is assigned a default priority of 10. To
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assign a different priority value, use "priority={prio}" to
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specify a value. The priority is used to determine the sign
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that is displayed when multiple signs are placed on the same
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line.
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Examples: >
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:sign place 5 line=3 name=sign1 file=a.py
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:sign place 6 group=g2 line=2 name=sign2 file=x.py
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:sign place 9 group=g2 priority=50 line=5
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\ name=sign1 file=a.py
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<
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:sign place {id} line={lnum} name={name} [buffer={nr}]
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Same, but use buffer {nr}. If the buffer argument is not
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given, place the sign in the current buffer.
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*E885*
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:sign place {id} name={name} file={fname}
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Change the placed sign {id} in file {fname} to use the defined
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sign {name}. See remark above about {fname} |:sign-fname|.
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This can be used to change the displayed sign without moving
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it (e.g., when the debugger has stopped at a breakpoint).
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The optional "group={group}" attribute can be used before
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"file=" to select a sign in a particular group. The optional
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"priority={prio}" attribute can be used to change the priority
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of an existing sign.
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:sign place {id} name={name} [buffer={nr}]
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Same, but use buffer {nr}. If the buffer argument is not
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given, use the current buffer.
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REMOVING SIGNS *:sign-unplace* *E159*
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See |sign_unplace()| for the equivalent Vim script function.
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:sign unplace {id} file={fname}
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Remove the previously placed sign {id} from file {fname}.
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See remark above about {fname} |:sign-fname|.
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:sign unplace {id} group={group} file={fname}
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Same but remove the sign {id} in sign group {group}.
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:sign unplace {id} group=* file={fname}
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Same but remove the sign {id} from all the sign groups.
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:sign unplace * file={fname}
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Remove all placed signs in file {fname}.
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:sign unplace * group={group} file={fname}
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Remove all placed signs in group {group} from file {fname}.
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:sign unplace * group=* file={fname}
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Remove all placed signs in all the groups from file {fname}.
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:sign unplace {id} buffer={nr}
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Remove the previously placed sign {id} from buffer {nr}.
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:sign unplace {id} group={group} buffer={nr}
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Remove the previously placed sign {id} in group {group} from
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buffer {nr}.
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:sign unplace {id} group=* buffer={nr}
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Remove the previously placed sign {id} in all the groups from
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buffer {nr}.
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:sign unplace * buffer={nr}
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Remove all placed signs in buffer {nr}.
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:sign unplace * group={group} buffer={nr}
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Remove all placed signs in group {group} from buffer {nr}.
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:sign unplace * group=* buffer={nr}
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Remove all placed signs in all the groups from buffer {nr}.
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:sign unplace {id}
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Remove the previously placed sign {id} from all files it
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appears in.
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:sign unplace {id} group={group}
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Remove the previously placed sign {id} in group {group} from
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all files it appears in.
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:sign unplace {id} group=*
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Remove the previously placed sign {id} in all the groups from
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all the files it appears in.
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:sign unplace *
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Remove all placed signs in the global group from all the files.
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:sign unplace * group={group}
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Remove all placed signs in group {group} from all the files.
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:sign unplace * group=*
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Remove all placed signs in all the groups from all the files.
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:sign unplace
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Remove a placed sign at the cursor position. If multiple signs
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are placed in the line, then only one is removed.
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:sign unplace group={group}
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Remove a placed sign in group {group} at the cursor
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position.
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:sign unplace group=*
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Remove a placed sign in any group at the cursor position.
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LISTING PLACED SIGNS *:sign-place-list*
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See |sign_getplaced()| for the equivalent Vim script function.
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:sign place file={fname}
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List signs placed in file {fname}.
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See remark above about {fname} |:sign-fname|.
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:sign place group={group} file={fname}
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List signs in group {group} placed in file {fname}.
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:sign place group=* file={fname}
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List signs in all the groups placed in file {fname}.
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:sign place buffer={nr}
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List signs placed in buffer {nr}.
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:sign place group={group} buffer={nr}
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List signs in group {group} placed in buffer {nr}.
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:sign place group=* buffer={nr}
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List signs in all the groups placed in buffer {nr}.
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:sign place group={group}
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List placed signs in all sign groups in all the files.
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:sign place group=*
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List placed signs in all sign groups in all files.
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JUMPING TO A SIGN *:sign-jump* *E157*
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See |sign_jump()| for the equivalent Vim script function.
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:sign jump {id} file={fname}
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Open the file {fname} or jump to the window that contains
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{fname} and position the cursor at sign {id}.
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See remark above about {fname} |:sign-fname|.
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If the file isn't displayed in window and the current file can
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not be |abandon|ed this fails.
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:sign jump {id} group={group} file={fname}
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Same but jump to the sign in group {group}
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:sign jump {id} [buffer={nr}] *E934*
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Same, but use buffer {nr}. This fails if buffer {nr} does not
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have a name. If the buffer argument is not given, use the
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current buffer.
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:sign jump {id} group={group} [buffer={nr}]
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Same but jump to the sign in group {group}
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vim:tw=78:ts=8:noet:ft=help:norl:
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