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diff --git a/runtime/doc/sign.txt b/runtime/doc/sign.txt new file mode 100644 index 0000000..9c52587 --- /dev/null +++ b/runtime/doc/sign.txt @@ -0,0 +1,736 @@ +*sign.txt* For Vim version 8.2. Last change: 2020 Oct 28 + + + VIM REFERENCE MANUAL by Gordon Prieur + and Bram Moolenaar + + +Sign Support Features *sign-support* + +1. Introduction |sign-intro| +2. Commands |sign-commands| +3. Functions |sign-functions-details| + +{only available when compiled with the |+signs| feature} + +============================================================================== +1. Introduction *sign-intro* *signs* + +When a debugger or other IDE tool is driving an editor it needs to be able +to give specific highlights which quickly tell the user useful information +about the file. One example of this would be a debugger which had an icon +in the left-hand column denoting a breakpoint. Another example might be an +arrow representing the Program Counter (PC). The sign features allow both +placement of a sign, or icon, in the left-hand side of the window and +definition of a highlight which will be applied to that line. Displaying the +sign as an image is most likely only feasible in gvim (although Sun +Microsystem's dtterm does support this it's the only terminal emulator I know +of which does). A text sign and the highlight should be feasible in any color +terminal emulator. + +Signs and highlights are not useful just for debuggers. Sun's Visual +WorkShop uses signs and highlights to mark build errors and SourceBrowser +hits. Additionally, the debugger supports 8 to 10 different signs and +highlight colors, see |NetBeans|. + +There are two steps in using signs: + +1. Define the sign. This specifies the image, text and highlighting. For + example, you can define a "break" sign with an image of a stop roadsign and + text "!!". + +2. Place the sign. This specifies the file and line number where the sign is + displayed. A defined sign can be placed several times in different lines + and files. + + *sign-column* +When signs are defined for a file, Vim will automatically add a column of two +characters to display them in. When the last sign is unplaced the column +disappears again. This behavior can be changed with the 'signcolumn' option. + +The color of the column is set with the SignColumn highlight group +|hl-SignColumn|. Example to set the color: > + + :highlight SignColumn guibg=darkgrey +< + *sign-identifier* +Each placed sign is identified by a number called the sign identifier. This +identifier is used to jump to the sign or to remove the sign. The identifier +is assigned when placing the sign using the |:sign-place| command or the +|sign_place()| function. Each sign identifier should be a unique number. If +multiple placed signs use the same identifier, then jumping to or removing a +sign becomes unpredictable. To avoid overlapping identifiers, sign groups can +be used. The |sign_place()| function can be called with a zero sign identifier +to allocate the next available identifier. + + *sign-group* +Each placed sign can be assigned to either the global group or a named group. +When placing a sign, if a group name is not supplied, or an empty string is +used, then the sign is placed in the global group. Otherwise the sign is +placed in the named group. The sign identifier is unique within a group. The +sign group allows Vim plugins to use unique signs without interfering with +other plugins using signs. + +To place a sign in a popup window the group name must start with "PopUp". +Other signs will not show in a popup window. The group name "PopUpMenu" is +used by popup windows where 'cursorline' is set. + + *sign-priority* +Each placed sign is assigned a priority value. When multiple signs are placed +on the same line, the attributes of the sign with the highest priority is used +independently of the sign group. The default priority for a sign is 10. The +priority is assigned at the time of placing a sign. + +When two signs with the same priority are present, and one has an icon or text +in the signcolumn while the other has line highlighting, then both are +displayed. + +When the line on which the sign is placed is deleted, the sign is moved to the +next line (or the last line of the buffer, if there is no next line). When +the delete is undone the sign does not move back. + +When a sign with line highlighting and 'cursorline' highlighting are both +present, if the priority is 100 or more then the sign highlighting takes +precedence, otherwise the 'cursorline' highlighting. + +============================================================================== +2. Commands *sign-commands* *:sig* *:sign* + +Here is an example that places a sign "piet", displayed with the text ">>", in +line 23 of the current file: > + :sign define piet text=>> texthl=Search + :exe ":sign place 2 line=23 name=piet file=" . expand("%:p") + +And here is the command to delete it again: > + :sign unplace 2 + +Note that the ":sign" command cannot be followed by another command or a +comment. If you do need that, use the |:execute| command. + + +DEFINING A SIGN. *:sign-define* *E255* *E160* *E612* + +See |sign_define()| for the equivalent Vim script function. + +:sign define {name} {argument}... + Define a new sign or set attributes for an existing sign. + The {name} can either be a number (all digits) or a name + starting with a non-digit. Leading zeros are ignored, thus + "0012", "012" and "12" are considered the same name. + About 120 different signs can be defined. + + Accepted arguments: + + icon={bitmap} + Define the file name where the bitmap can be found. Should be + a full path. The bitmap should fit in the place of two + characters. This is not checked. If the bitmap is too big it + will cause redraw problems. Only GTK 2 can scale the bitmap + to fit the space available. + toolkit supports ~ + GTK 1 pixmap (.xpm) + GTK 2 many + Motif pixmap (.xpm) + Win32 .bmp, .ico, .cur + pixmap (.xpm) |+xpm_w32| + + linehl={group} + Highlighting group used for the whole line the sign is placed + in. Most useful is defining a background color. + + text={text} *E239* + Define the text that is displayed when there is no icon or the + GUI is not being used. Only printable characters are allowed + and they must occupy one or two display cells. + + texthl={group} + Highlighting group used for the text item. + + +DELETING A SIGN *:sign-undefine* *E155* + +See |sign_undefine()| for the equivalent Vim script function. + +:sign undefine {name} + Deletes a previously defined sign. If signs with this {name} + are still placed this will cause trouble. + + + +LISTING SIGNS *:sign-list* *E156* + +See |sign_getdefined()| for the equivalent Vim script function. + +:sign list Lists all defined signs and their attributes. + +:sign list {name} + Lists one defined sign and its attributes. + + +PLACING SIGNS *:sign-place* *E158* + +See |sign_place()| for the equivalent Vim script function. + +:sign place {id} line={lnum} name={name} file={fname} + Place sign defined as {name} at line {lnum} in file {fname}. + *:sign-fname* + The file {fname} must already be loaded in a buffer. The + exact file name must be used, wildcards, $ENV and ~ are not + expanded, white space must not be escaped. Trailing white + space is ignored. + + The sign is remembered under {id}, this can be used for + further manipulation. {id} must be a number. + It's up to the user to make sure the {id} is used only once in + each file (if it's used several times unplacing will also have + to be done several times and making changes may not work as + expected). + + The following optional sign attributes can be specified before + "file=": + group={group} Place sign in sign group {group} + priority={prio} Assign priority {prio} to sign + + By default, the sign is placed in the global sign group. + + By default, the sign is assigned a default priority of 10. To + assign a different priority value, use "priority={prio}" to + specify a value. The priority is used to determine the sign + that is displayed when multiple signs are placed on the same + line. + + Examples: > + :sign place 5 line=3 name=sign1 file=a.py + :sign place 6 group=g2 line=2 name=sign2 file=x.py + :sign place 9 group=g2 priority=50 line=5 + \ name=sign1 file=a.py +< +:sign place {id} line={lnum} name={name} [buffer={nr}] + Same, but use buffer {nr}. If the buffer argument is not + given, place the sign in the current buffer. + + *E885* +:sign place {id} name={name} file={fname} + Change the placed sign {id} in file {fname} to use the defined + sign {name}. See remark above about {fname} |:sign-fname|. + This can be used to change the displayed sign without moving + it (e.g., when the debugger has stopped at a breakpoint). + + The optional "group={group}" attribute can be used before + "file=" to select a sign in a particular group. The optional + "priority={prio}" attribute can be used to change the priority + of an existing sign. + +:sign place {id} name={name} [buffer={nr}] + Same, but use buffer {nr}. If the buffer argument is not + given, use the current buffer. + + +REMOVING SIGNS *:sign-unplace* *E159* + +See |sign_unplace()| for the equivalent Vim script function. + +:sign unplace {id} file={fname} + Remove the previously placed sign {id} from file {fname}. + See remark above about {fname} |:sign-fname|. + +:sign unplace {id} group={group} file={fname} + Same but remove the sign {id} in sign group {group}. + +:sign unplace {id} group=* file={fname} + Same but remove the sign {id} from all the sign groups. + +:sign unplace * file={fname} + Remove all placed signs in file {fname}. + +:sign unplace * group={group} file={fname} + Remove all placed signs in group {group} from file {fname}. + +:sign unplace * group=* file={fname} + Remove all placed signs in all the groups from file {fname}. + +:sign unplace {id} buffer={nr} + Remove the previously placed sign {id} from buffer {nr}. + +:sign unplace {id} group={group} buffer={nr} + Remove the previously placed sign {id} in group {group} from + buffer {nr}. + +:sign unplace {id} group=* buffer={nr} + Remove the previously placed sign {id} in all the groups from + buffer {nr}. + +:sign unplace * buffer={nr} + Remove all placed signs in buffer {nr}. + +:sign unplace * group={group} buffer={nr} + Remove all placed signs in group {group} from buffer {nr}. + +:sign unplace * group=* buffer={nr} + Remove all placed signs in all the groups from buffer {nr}. + +:sign unplace {id} + Remove the previously placed sign {id} from all files it + appears in. + +:sign unplace {id} group={group} + Remove the previously placed sign {id} in group {group} from + all files it appears in. + +:sign unplace {id} group=* + Remove the previously placed sign {id} in all the groups from + all the files it appears in. + +:sign unplace * + Remove all placed signs in the global group from all the files. + +:sign unplace * group={group} + Remove all placed signs in group {group} from all the files. + +:sign unplace * group=* + Remove all placed signs in all the groups from all the files. + +:sign unplace + Remove a placed sign at the cursor position. If multiple signs + are placed in the line, then only one is removed. + +:sign unplace group={group} + Remove a placed sign in group {group} at the cursor + position. + +:sign unplace group=* + Remove a placed sign in any group at the cursor position. + + +LISTING PLACED SIGNS *:sign-place-list* + +See |sign_getplaced()| for the equivalent Vim script function. + +:sign place file={fname} + List signs placed in file {fname}. + See remark above about {fname} |:sign-fname|. + +:sign place group={group} file={fname} + List signs in group {group} placed in file {fname}. + +:sign place group=* file={fname} + List signs in all the groups placed in file {fname}. + +:sign place buffer={nr} + List signs placed in buffer {nr}. + +:sign place group={group} buffer={nr} + List signs in group {group} placed in buffer {nr}. + +:sign place group=* buffer={nr} + List signs in all the groups placed in buffer {nr}. + +:sign place List placed signs in the global group in all files. + +:sign place group={group} + List placed signs with sign group {group} in all files. + +:sign place group=* + List placed signs in all sign groups in all files. + + +JUMPING TO A SIGN *:sign-jump* *E157* + +See |sign_jump()| for the equivalent Vim script function. + +:sign jump {id} file={fname} + Open the file {fname} or jump to the window that contains + {fname} and position the cursor at sign {id}. + See remark above about {fname} |:sign-fname|. + If the file isn't displayed in window and the current file can + not be |abandon|ed this fails. + +:sign jump {id} group={group} file={fname} + Same but jump to the sign in group {group} + +:sign jump {id} [buffer={nr}] *E934* + Same, but use buffer {nr}. This fails if buffer {nr} does not + have a name. If the buffer argument is not given, use the + current buffer. + +:sign jump {id} group={group} [buffer={nr}] + Same but jump to the sign in group {group} + + +============================================================================== +3. Functions *sign-functions-details* + +sign_define({name} [, {dict}]) *sign_define()* +sign_define({list}) + Define a new sign named {name} or modify the attributes of an + existing sign. This is similar to the |:sign-define| command. + + Prefix {name} with a unique text to avoid name collisions. + There is no {group} like with placing signs. + + The {name} can be a String or a Number. The optional {dict} + argument specifies the sign attributes. The following values + are supported: + icon full path to the bitmap file for the sign. + linehl highlight group used for the whole line the + sign is placed in. + text text that is displayed when there is no icon + or the GUI is not being used. + texthl highlight group used for the text item + + If the sign named {name} already exists, then the attributes + of the sign are updated. + + The one argument {list} can be used to define a list of signs. + Each list item is a dictionary with the above items in {dict} + and a "name" item for the sign name. + + Returns 0 on success and -1 on failure. When the one argument + {list} is used, then returns a List of values one for each + defined sign. + + Examples: > + call sign_define("mySign", { + \ "text" : "=>", + \ "texthl" : "Error", + \ "linehl" : "Search"}) + call sign_define([ + \ {'name' : 'sign1', + \ 'text' : '=>'}, + \ {'name' : 'sign2', + \ 'text' : '!!'} + \ ]) +< + Can also be used as a |method|: > + GetSignList()->sign_define() + +sign_getdefined([{name}]) *sign_getdefined()* + Get a list of defined signs and their attributes. + This is similar to the |:sign-list| command. + + If the {name} is not supplied, then a list of all the defined + signs is returned. Otherwise the attribute of the specified + sign is returned. + + Each list item in the returned value is a dictionary with the + following entries: + icon full path to the bitmap file of the sign + linehl highlight group used for the whole line the + sign is placed in. + name name of the sign + text text that is displayed when there is no icon + or the GUI is not being used. + texthl highlight group used for the text item + + Returns an empty List if there are no signs and when {name} is + not found. + + Examples: > + " Get a list of all the defined signs + echo sign_getdefined() + + " Get the attribute of the sign named mySign + echo sign_getdefined("mySign") +< + Can also be used as a |method|: > + GetSignList()->sign_getdefined() + +sign_getplaced([{expr} [, {dict}]]) *sign_getplaced()* + Return a list of signs placed in a buffer or all the buffers. + This is similar to the |:sign-place-list| command. + + If the optional buffer name {expr} is specified, then only the + list of signs placed in that buffer is returned. For the use + of {expr}, see |bufname()|. The optional {dict} can contain + the following entries: + group select only signs in this group + id select sign with this identifier + lnum select signs placed in this line. For the use + of {lnum}, see |line()|. + If {group} is '*', then signs in all the groups including the + global group are returned. If {group} is not supplied or is an + empty string, then only signs in the global group are + returned. If no arguments are supplied, then signs in the + global group placed in all the buffers are returned. + See |sign-group|. + + Each list item in the returned value is a dictionary with the + following entries: + bufnr number of the buffer with the sign + signs list of signs placed in {bufnr}. Each list + item is a dictionary with the below listed + entries + + The dictionary for each sign contains the following entries: + group sign group. Set to '' for the global group. + id identifier of the sign + lnum line number where the sign is placed + name name of the defined sign + priority sign priority + + The returned signs in a buffer are ordered by their line + number and priority. + + Returns an empty list on failure or if there are no placed + signs. + + Examples: > + " Get a List of signs placed in eval.c in the + " global group + echo sign_getplaced("eval.c") + + " Get a List of signs in group 'g1' placed in eval.c + echo sign_getplaced("eval.c", {'group' : 'g1'}) + + " Get a List of signs placed at line 10 in eval.c + echo sign_getplaced("eval.c", {'lnum' : 10}) + + " Get sign with identifier 10 placed in a.py + echo sign_getplaced("a.py", {'id' : 10}) + + " Get sign with id 20 in group 'g1' placed in a.py + echo sign_getplaced("a.py", {'group' : 'g1', + \ 'id' : 20}) + + " Get a List of all the placed signs + echo sign_getplaced() +< + Can also be used as a |method|: > + GetBufname()->sign_getplaced() +< + *sign_jump()* +sign_jump({id}, {group}, {expr}) + Open the buffer {expr} or jump to the window that contains + {expr} and position the cursor at sign {id} in group {group}. + This is similar to the |:sign-jump| command. + + For the use of {expr}, see |bufname()|. + + Returns the line number of the sign. Returns -1 if the + arguments are invalid. + + Example: > + " Jump to sign 10 in the current buffer + call sign_jump(10, '', '') +< + Can also be used as a |method|: > + GetSignid()->sign_jump() +< + *sign_place()* +sign_place({id}, {group}, {name}, {expr} [, {dict}]) + Place the sign defined as {name} at line {lnum} in file or + buffer {expr} and assign {id} and {group} to sign. This is + similar to the |:sign-place| command. + + If the sign identifier {id} is zero, then a new identifier is + allocated. Otherwise the specified number is used. {group} is + the sign group name. To use the global sign group, use an + empty string. {group} functions as a namespace for {id}, thus + two groups can use the same IDs. Refer to |sign-identifier| + and |sign-group| for more information. + + {name} refers to a defined sign. + {expr} refers to a buffer name or number. For the accepted + values, see |bufname()|. + + The optional {dict} argument supports the following entries: + lnum line number in the file or buffer + {expr} where the sign is to be placed. + For the accepted values, see |line()|. + priority priority of the sign. See + |sign-priority| for more information. + + If the optional {dict} is not specified, then it modifies the + placed sign {id} in group {group} to use the defined sign + {name}. + + Returns the sign identifier on success and -1 on failure. + + Examples: > + " Place a sign named sign1 with id 5 at line 20 in + " buffer json.c + call sign_place(5, '', 'sign1', 'json.c', + \ {'lnum' : 20}) + + " Updates sign 5 in buffer json.c to use sign2 + call sign_place(5, '', 'sign2', 'json.c') + + " Place a sign named sign3 at line 30 in + " buffer json.c with a new identifier + let id = sign_place(0, '', 'sign3', 'json.c', + \ {'lnum' : 30}) + + " Place a sign named sign4 with id 10 in group 'g3' + " at line 40 in buffer json.c with priority 90 + call sign_place(10, 'g3', 'sign4', 'json.c', + \ {'lnum' : 40, 'priority' : 90}) +< + Can also be used as a |method|: > + GetSignid()->sign_place(group, name, expr) +< + *sign_placelist()* +sign_placelist({list}) + Place one or more signs. This is similar to the + |sign_place()| function. The {list} argument specifies the + List of signs to place. Each list item is a dict with the + following sign attributes: + buffer buffer name or number. For the accepted + values, see |bufname()|. + group sign group. {group} functions as a namespace + for {id}, thus two groups can use the same + IDs. If not specified or set to an empty + string, then the global group is used. See + |sign-group| for more information. + id sign identifier. If not specified or zero, + then a new unique identifier is allocated. + Otherwise the specified number is used. See + |sign-identifier| for more information. + lnum line number in the buffer {expr} where the + sign is to be placed. For the accepted values, + see |line()|. + name name of the sign to place. See |sign_define()| + for more information. + priority priority of the sign. When multiple signs are + placed on a line, the sign with the highest + priority is used. If not specified, the + default value of 10 is used. See + |sign-priority| for more information. + + If {id} refers to an existing sign, then the existing sign is + modified to use the specified {name} and/or {priority}. + + Returns a List of sign identifiers. If failed to place a + sign, the corresponding list item is set to -1. + + Examples: > + " Place sign s1 with id 5 at line 20 and id 10 at line + " 30 in buffer a.c + let [n1, n2] = sign_placelist([ + \ {'id' : 5, + \ 'name' : 's1', + \ 'buffer' : 'a.c', + \ 'lnum' : 20}, + \ {'id' : 10, + \ 'name' : 's1', + \ 'buffer' : 'a.c', + \ 'lnum' : 30} + \ ]) + + " Place sign s1 in buffer a.c at line 40 and 50 + " with auto-generated identifiers + let [n1, n2] = sign_placelist([ + \ {'name' : 's1', + \ 'buffer' : 'a.c', + \ 'lnum' : 40}, + \ {'name' : 's1', + \ 'buffer' : 'a.c', + \ 'lnum' : 50} + \ ]) +< + Can also be used as a |method|: > + GetSignlist()->sign_placelist() + +sign_undefine([{name}]) *sign_undefine()* +sign_undefine({list}) + Deletes a previously defined sign {name}. This is similar to + the |:sign-undefine| command. If {name} is not supplied, then + deletes all the defined signs. + + The one argument {list} can be used to undefine a list of + signs. Each list item is the name of a sign. + + Returns 0 on success and -1 on failure. For the one argument + {list} call, returns a list of values one for each undefined + sign. + + Examples: > + " Delete a sign named mySign + call sign_undefine("mySign") + + " Delete signs 'sign1' and 'sign2' + call sign_undefine(["sign1", "sign2"]) + + " Delete all the signs + call sign_undefine() +< + Can also be used as a |method|: > + GetSignlist()->sign_undefine() + +sign_unplace({group} [, {dict}]) *sign_unplace()* + Remove a previously placed sign in one or more buffers. This + is similar to the |:sign-unplace| command. + + {group} is the sign group name. To use the global sign group, + use an empty string. If {group} is set to '*', then all the + groups including the global group are used. + The signs in {group} are selected based on the entries in + {dict}. The following optional entries in {dict} are + supported: + buffer buffer name or number. See |bufname()|. + id sign identifier + If {dict} is not supplied, then all the signs in {group} are + removed. + + Returns 0 on success and -1 on failure. + + Examples: > + " Remove sign 10 from buffer a.vim + call sign_unplace('', {'buffer' : "a.vim", 'id' : 10}) + + " Remove sign 20 in group 'g1' from buffer 3 + call sign_unplace('g1', {'buffer' : 3, 'id' : 20}) + + " Remove all the signs in group 'g2' from buffer 10 + call sign_unplace('g2', {'buffer' : 10}) + + " Remove sign 30 in group 'g3' from all the buffers + call sign_unplace('g3', {'id' : 30}) + + " Remove all the signs placed in buffer 5 + call sign_unplace('*', {'buffer' : 5}) + + " Remove the signs in group 'g4' from all the buffers + call sign_unplace('g4') + + " Remove sign 40 from all the buffers + call sign_unplace('*', {'id' : 40}) + + " Remove all the placed signs from all the buffers + call sign_unplace('*') + +< Can also be used as a |method|: > + GetSigngroup()->sign_unplace() +< +sign_unplacelist({list}) *sign_unplacelist()* + Remove previously placed signs from one or more buffers. This + is similar to the |sign_unplace()| function. + + The {list} argument specifies the List of signs to remove. + Each list item is a dict with the following sign attributes: + buffer buffer name or number. For the accepted + values, see |bufname()|. If not specified, + then the specified sign is removed from all + the buffers. + group sign group name. If not specified or set to an + empty string, then the global sign group is + used. If set to '*', then all the groups + including the global group are used. + id sign identifier. If not specified, then all + the signs in the specified group are removed. + + Returns a List where an entry is set to 0 if the corresponding + sign was successfully removed or -1 on failure. + + Example: > + " Remove sign with id 10 from buffer a.vim and sign + " with id 20 from buffer b.vim + call sign_unplacelist([ + \ {'id' : 10, 'buffer' : "a.vim"}, + \ {'id' : 20, 'buffer' : 'b.vim'}, + \ ]) +< + Can also be used as a |method|: > + GetSignlist()->sign_unplacelist() +< + + vim:tw=78:ts=8:noet:ft=help:norl: |