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+To: vim_dev@googlegroups.com
+Subject: Patch 8.1.0519
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 8.1.0519
+Problem: Cannot save and restore the tag stack.
+Solution: Add gettagstack() and settagstack(). (Yegappan Lakshmanan,
+ closes #3604)
+Files: runtime/doc/eval.txt, runtime/doc/tagsrch.txt,
+ runtime/doc/usr_41.txt, src/alloc.h, src/dict.c, src/evalfunc.c,
+ src/list.c, src/misc2.c, src/proto/dict.pro, src/proto/list.pro,
+ src/proto/misc2.pro, src/proto/tag.pro, src/tag.c,
+ src/testdir/test_tagjump.vim
+
+
+*** ../vim-8.1.0518/runtime/doc/eval.txt 2018-11-10 17:33:23.091518784 +0100
+--- runtime/doc/eval.txt 2018-11-11 15:16:01.878631709 +0100
+***************
+*** 2198,2203 ****
+--- 2206,2212 ----
+ any variable {varname} in tab {nr} or {def}
+ gettabwinvar({tabnr}, {winnr}, {name} [, {def}])
+ any {name} in {winnr} in tab page {tabnr}
++ gettagstack([{nr}]) Dict get the tag stack of window {nr}
+ getwininfo([{winid}]) List list of info about each window
+ getwinpos([{timeout}]) List X and Y coord in pixels of the Vim window
+ getwinposx() Number X coord in pixels of the Vim window
+***************
+*** 2371,2376 ****
+--- 2379,2386 ----
+ settabwinvar({tabnr}, {winnr}, {varname}, {val})
+ none set {varname} in window {winnr} in tab
+ page {tabnr} to {val}
++ settagstack({nr}, {dict} [, {action}])
++ Number modify tag stack using {dict}
+ setwinvar({nr}, {varname}, {val}) none set {varname} in window {nr} to {val}
+ sha256({string}) String SHA256 checksum of {string}
+ shellescape({string} [, {special}])
+***************
+*** 4959,4964 ****
+--- 4971,5007 ----
+ :let list_is_on = gettabwinvar(1, 2, '&list')
+ :echo "myvar = " . gettabwinvar(3, 1, 'myvar')
+ <
++ To obtain all window-local variables use: >
++ gettabwinvar({tabnr}, {winnr}, '&')
++
++ gettagstack([{nr}]) *gettagstack()*
++ The result is a Dict, which is the tag stack of window {nr}.
++ {nr} can be the window number or the |window-ID|.
++ When {nr} is not specified, the current window is used.
++ When window {nr} doesn't exist, an empty Dict is returned.
++
++ The returned dictionary contains the following entries:
++ curidx Current index in the stack. When at
++ top of the stack, set to (length + 1).
++ Index of bottom of the stack is 1.
++ items List of items in the stack. Each item
++ is a dictionary containing the
++ entries described below.
++ length Number of entries in the stack.
++
++ Each item in the stack is a dictionary with the following
++ entries:
++ bufnr buffer number of the current jump
++ from cursor position before the tag jump.
++ See |getpos()| for the format of the
++ returned list.
++ matchnr current matching tag number. Used when
++ multiple matching tags are found for a
++ name.
++ tagname name of the tag
++
++ See |tagstack| for more information about the tag stack.
++
+ getwininfo([{winid}]) *getwininfo()*
+ Returns information about windows as a List with Dictionaries.
+
+***************
+*** 7522,7527 ****
+--- 7566,7602 ----
+ :call settabwinvar(3, 2, "myvar", "foobar")
+ < This function is not available in the |sandbox|.
+
++ settagstack({nr}, {dict} [, {action}]) *settagstack()*
++ Modify the tag stack of the window {nr} using {dict}.
++ {nr} can be the window number or the |window-ID|.
++
++ For a list of supported items in {dict}, refer to
++ |gettagstack()|
++ *E962*
++ If {action} is not present or is set to 'r', then the tag
++ stack is replaced. If {action} is set to 'a', then new entries
++ from {dict} are pushed onto the tag stack.
++
++ Returns zero for success, -1 for failure.
++
++ Examples:
++ Set current index of the tag stack to 4: >
++ call settagstack(1005, {'curidx' : 4})
++
++ < Empty the tag stack of window 3: >
++ call settagstack(3, {'items' : []})
++
++ < Push a new item onto the tag stack: >
++ let pos = [bufnr('myfile.txt'), 10, 1, 0]
++ let newtag = [{'tagname' : 'mytag', 'from' : pos}]
++ call settagstack(2, {'items' : newtag}, 'a')
++
++ < Save and restore the tag stack: >
++ let stack = gettagstack(1003)
++ " do something else
++ call settagstack(1003, stack)
++ unlet stack
++ <
+ setwinvar({nr}, {varname}, {val}) *setwinvar()*
+ Like |settabwinvar()| for the current tab page.
+ Examples: >
+*** ../vim-8.1.0518/runtime/doc/tagsrch.txt 2018-05-17 13:42:03.000000000 +0200
+--- runtime/doc/tagsrch.txt 2018-11-10 19:23:26.025972138 +0100
+***************
+*** 179,184 ****
+--- 179,187 ----
+ 1 1 main 1 harddisk2:text/vim/test
+ 2 1 FuncB 59 harddisk2:text/vim/src/main.c
+
++ The gettagstack() function returns the tag stack of a specified window. The
++ settagstack() function modifies the tag stack of a window.
++
+ *E73*
+ When you try to use the tag stack while it doesn't contain anything you will
+ get an error message.
+*** ../vim-8.1.0518/runtime/doc/usr_41.txt 2018-05-22 20:35:13.550009275 +0200
+--- runtime/doc/usr_41.txt 2018-11-10 19:23:26.025972138 +0100
+***************
+*** 809,814 ****
+--- 809,815 ----
+ getwininfo() get a list with window information
+ getchangelist() get a list of change list entries
+ getjumplist() get a list of jump list entries
++ swapinfo() information about a swap file
+
+ Command line: *command-line-functions*
+ getcmdline() get the current command line
+***************
+*** 1027,1032 ****
+--- 1028,1035 ----
+
+ taglist() get list of matching tags
+ tagfiles() get a list of tags files
++ gettagstack() get the tag stack
++ settagstack() modify the tag stack
+
+ luaeval() evaluate Lua expression
+ mzeval() evaluate |MzScheme| expression
+*** ../vim-8.1.0518/src/alloc.h 2018-05-01 14:44:41.000000000 +0200
+--- src/alloc.h 2018-11-10 19:23:26.025972138 +0100
+***************
+*** 18,22 ****
+--- 18,25 ----
+ aid_qf_module,
+ aid_qf_errmsg,
+ aid_qf_pattern,
++ aid_tagstack_items,
++ aid_tagstack_from,
++ aid_tagstack_details,
+ aid_last
+ } alloc_id_T;
+*** ../vim-8.1.0518/src/dict.c 2018-07-08 17:18:58.416462371 +0200
+--- src/dict.c 2018-11-10 19:23:26.025972138 +0100
+***************
+*** 47,52 ****
+--- 47,65 ----
+ return d;
+ }
+
++ /*
++ * dict_alloc() with an ID for alloc_fail().
++ */
++ dict_T *
++ dict_alloc_id(alloc_id_T id UNUSED)
++ {
++ #ifdef FEAT_EVAL
++ if (alloc_fail_id == id && alloc_does_fail((long_u)sizeof(list_T)))
++ return NULL;
++ #endif
++ return (dict_alloc());
++ }
++
+ dict_T *
+ dict_alloc_lock(int lock)
+ {
+*** ../vim-8.1.0518/src/evalfunc.c 2018-10-25 13:11:13.111143297 +0200
+--- src/evalfunc.c 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 201,206 ****
+--- 201,207 ----
+ static void f_gettabinfo(typval_T *argvars, typval_T *rettv);
+ static void f_gettabvar(typval_T *argvars, typval_T *rettv);
+ static void f_gettabwinvar(typval_T *argvars, typval_T *rettv);
++ static void f_gettagstack(typval_T *argvars, typval_T *rettv);
+ static void f_getwininfo(typval_T *argvars, typval_T *rettv);
+ static void f_getwinpos(typval_T *argvars, typval_T *rettv);
+ static void f_getwinposx(typval_T *argvars, typval_T *rettv);
+***************
+*** 361,366 ****
+--- 362,368 ----
+ static void f_setreg(typval_T *argvars, typval_T *rettv);
+ static void f_settabvar(typval_T *argvars, typval_T *rettv);
+ static void f_settabwinvar(typval_T *argvars, typval_T *rettv);
++ static void f_settagstack(typval_T *argvars, typval_T *rettv);
+ static void f_setwinvar(typval_T *argvars, typval_T *rettv);
+ #ifdef FEAT_CRYPT
+ static void f_sha256(typval_T *argvars, typval_T *rettv);
+***************
+*** 666,671 ****
+--- 668,674 ----
+ {"gettabinfo", 0, 1, f_gettabinfo},
+ {"gettabvar", 2, 3, f_gettabvar},
+ {"gettabwinvar", 3, 4, f_gettabwinvar},
++ {"gettagstack", 0, 1, f_gettagstack},
+ {"getwininfo", 0, 1, f_getwininfo},
+ {"getwinpos", 0, 1, f_getwinpos},
+ {"getwinposx", 0, 0, f_getwinposx},
+***************
+*** 828,833 ****
+--- 831,837 ----
+ {"setreg", 2, 3, f_setreg},
+ {"settabvar", 3, 3, f_settabvar},
+ {"settabwinvar", 4, 4, f_settabwinvar},
++ {"settagstack", 2, 3, f_settagstack},
+ {"setwinvar", 3, 3, f_setwinvar},
+ #ifdef FEAT_CRYPT
+ {"sha256", 1, 1, f_sha256},
+***************
+*** 5657,5662 ****
+--- 5661,5687 ----
+ }
+
+ /*
++ * "gettagstack()" function
++ */
++ static void
++ f_gettagstack(typval_T *argvars, typval_T *rettv)
++ {
++ win_T *wp = curwin; // default is current window
++
++ if (rettv_dict_alloc(rettv) != OK)
++ return;
++
++ if (argvars[0].v_type != VAR_UNKNOWN)
++ {
++ wp = find_win_by_nr_or_id(&argvars[0]);
++ if (wp == NULL)
++ return;
++ }
++
++ get_tagstack(wp, rettv->vval.v_dict);
++ }
++
++ /*
+ * Returns information about a window as a dictionary.
+ */
+ static dict_T *
+***************
+*** 11119,11124 ****
+--- 11144,11205 ----
+ }
+
+ /*
++ * "settagstack()" function
++ */
++ static void
++ f_settagstack(typval_T *argvars, typval_T *rettv)
++ {
++ static char *e_invact2 = N_("E962: Invalid action: '%s'");
++ win_T *wp;
++ dict_T *d;
++ int action = 'r';
++
++ rettv->vval.v_number = -1;
++
++ // first argument: window number or id
++ wp = find_win_by_nr_or_id(&argvars[0]);
++ if (wp == NULL)
++ return;
++
++ // second argument: dict with items to set in the tag stack
++ if (argvars[1].v_type != VAR_DICT)
++ {
++ EMSG(_(e_dictreq));
++ return;
++ }
++ d = argvars[1].vval.v_dict;
++ if (d == NULL)
++ return;
++
++ // third argument: action - 'a' for append and 'r' for replace.
++ // default is to replace the stack.
++ if (argvars[2].v_type == VAR_UNKNOWN)
++ action = 'r';
++ else if (argvars[2].v_type == VAR_STRING)
++ {
++ char_u *actstr;
++ actstr = get_tv_string_chk(&argvars[2]);
++ if (actstr == NULL)
++ return;
++ if ((*actstr == 'r' || *actstr == 'a') && actstr[1] == NUL)
++ action = *actstr;
++ else
++ {
++ EMSG2(_(e_invact2), actstr);
++ return;
++ }
++ }
++ else
++ {
++ EMSG(_(e_stringreq));
++ return;
++ }
++
++ if (set_tagstack(wp, d, action) == OK)
++ rettv->vval.v_number = 0;
++ }
++
++ /*
+ * "setwinvar()" function
+ */
+ static void
+*** ../vim-8.1.0518/src/list.c 2018-07-25 19:49:41.895812670 +0200
+--- src/list.c 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 86,91 ****
+--- 86,104 ----
+ }
+
+ /*
++ * list_alloc() with an ID for alloc_fail().
++ */
++ list_T *
++ list_alloc_id(alloc_id_T id UNUSED)
++ {
++ #ifdef FEAT_EVAL
++ if (alloc_fail_id == id && alloc_does_fail((long_u)sizeof(list_T)))
++ return NULL;
++ #endif
++ return (list_alloc());
++ }
++
++ /*
+ * Allocate an empty list for a return value, with reference count set.
+ * Returns OK or FAIL.
+ */
+*** ../vim-8.1.0518/src/misc2.c 2018-10-20 20:53:58.147284793 +0200
+--- src/misc2.c 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 835,841 ****
+ #endif /* MEM_PROFILE */
+
+ #ifdef FEAT_EVAL
+! static int
+ alloc_does_fail(long_u size)
+ {
+ if (alloc_fail_countdown == 0)
+--- 835,841 ----
+ #endif /* MEM_PROFILE */
+
+ #ifdef FEAT_EVAL
+! int
+ alloc_does_fail(long_u size)
+ {
+ if (alloc_fail_countdown == 0)
+*** ../vim-8.1.0518/src/proto/dict.pro 2018-07-08 16:50:33.107216836 +0200
+--- src/proto/dict.pro 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 1,5 ****
+--- 1,6 ----
+ /* dict.c */
+ dict_T *dict_alloc(void);
++ dict_T *dict_alloc_id(alloc_id_T id);
+ dict_T *dict_alloc_lock(int lock);
+ int rettv_dict_alloc(typval_T *rettv);
+ void rettv_dict_set(typval_T *rettv, dict_T *d);
+*** ../vim-8.1.0518/src/proto/list.pro 2018-05-17 13:52:42.000000000 +0200
+--- src/proto/list.pro 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 3,8 ****
+--- 3,9 ----
+ void list_rem_watch(list_T *l, listwatch_T *lwrem);
+ void list_fix_watch(list_T *l, listitem_T *item);
+ list_T *list_alloc(void);
++ list_T *list_alloc_id(alloc_id_T id);
+ int rettv_list_alloc(typval_T *rettv);
+ void rettv_list_set(typval_T *rettv, list_T *l);
+ void list_unref(list_T *l);
+*** ../vim-8.1.0518/src/proto/misc2.pro 2018-05-17 13:52:46.000000000 +0200
+--- src/proto/misc2.pro 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 21,26 ****
+--- 21,27 ----
+ int leftcol_changed(void);
+ void vim_mem_profile_dump(void);
+ char_u *alloc(unsigned size);
++ int alloc_does_fail(long_u size);
+ char_u *alloc_id(unsigned size, alloc_id_T id);
+ char_u *alloc_clear(unsigned size);
+ char_u *alloc_check(unsigned size);
+*** ../vim-8.1.0518/src/proto/tag.pro 2018-05-17 13:52:52.000000000 +0200
+--- src/proto/tag.pro 2018-11-10 19:23:26.029972104 +0100
+***************
+*** 9,12 ****
+--- 9,14 ----
+ void simplify_filename(char_u *filename);
+ int expand_tags(int tagnames, char_u *pat, int *num_file, char_u ***file);
+ int get_tags(list_T *list, char_u *pat, char_u *buf_fname);
++ void get_tagstack(win_T *wp, dict_T *retdict);
++ int set_tagstack(win_T *wp, dict_T *d, int action);
+ /* vim: set ft=c : */
+*** ../vim-8.1.0518/src/tag.c 2018-09-30 21:43:17.207693209 +0200
+--- src/tag.c 2018-11-11 15:03:52.375828252 +0100
+***************
+*** 4016,4019 ****
+--- 4016,4219 ----
+ }
+ return ret;
+ }
++
++ /*
++ * Return information about 'tag' in dict 'retdict'.
++ */
++ static void
++ get_tag_details(taggy_T *tag, dict_T *retdict)
++ {
++ list_T *pos;
++ fmark_T *fmark;
++
++ dict_add_string(retdict, "tagname", tag->tagname);
++ dict_add_number(retdict, "matchnr", tag->cur_match + 1);
++ dict_add_number(retdict, "bufnr", tag->cur_fnum);
++
++ if ((pos = list_alloc_id(aid_tagstack_from)) == NULL)
++ return;
++ dict_add_list(retdict, "from", pos);
++
++ fmark = &tag->fmark;
++ list_append_number(pos,
++ (varnumber_T)(fmark->fnum != -1 ? fmark->fnum : 0));
++ list_append_number(pos, (varnumber_T)fmark->mark.lnum);
++ list_append_number(pos, (varnumber_T)(fmark->mark.col == MAXCOL ?
++ MAXCOL : fmark->mark.col + 1));
++ list_append_number(pos, (varnumber_T)fmark->mark.coladd);
++ }
++
++ /*
++ * Return the tag stack entries of the specified window 'wp' in dictionary
++ * 'retdict'.
++ */
++ void
++ get_tagstack(win_T *wp, dict_T *retdict)
++ {
++ list_T *l;
++ int i;
++ dict_T *d;
++
++ dict_add_number(retdict, "length", wp->w_tagstacklen);
++ dict_add_number(retdict, "curidx", wp->w_tagstackidx + 1);
++ l = list_alloc_id(aid_tagstack_items);
++ if (l == NULL)
++ return;
++ dict_add_list(retdict, "items", l);
++
++ for (i = 0; i < wp->w_tagstacklen; i++)
++ {
++ if ((d = dict_alloc_id(aid_tagstack_details)) == NULL)
++ return;
++ list_append_dict(l, d);
++
++ get_tag_details(&wp->w_tagstack[i], d);
++ }
++ }
++
++ /*
++ * Free all the entries in the tag stack of the specified window
++ */
++ static void
++ tagstack_clear(win_T *wp)
++ {
++ int i;
++
++ // Free the current tag stack
++ for (i = 0; i < wp->w_tagstacklen; ++i)
++ vim_free(wp->w_tagstack[i].tagname);
++ wp->w_tagstacklen = 0;
++ wp->w_tagstackidx = 0;
++ }
++
++ /*
++ * Remove the oldest entry from the tag stack and shift the rest of
++ * the entires to free up the top of the stack.
++ */
++ static void
++ tagstack_shift(win_T *wp)
++ {
++ taggy_T *tagstack = wp->w_tagstack;
++ int i;
++
++ vim_free(tagstack[0].tagname);
++ for (i = 1; i < wp->w_tagstacklen; ++i)
++ tagstack[i - 1] = tagstack[i];
++ wp->w_tagstacklen--;
++ }
++
++ /*
++ * Push a new item to the tag stack
++ */
++ static void
++ tagstack_push_item(
++ win_T *wp,
++ char_u *tagname,
++ int cur_fnum,
++ int cur_match,
++ pos_T mark,
++ int fnum)
++ {
++ taggy_T *tagstack = wp->w_tagstack;
++ int idx = wp->w_tagstacklen; // top of the stack
++
++ // if the tagstack is full: remove the oldest entry
++ if (idx >= TAGSTACKSIZE)
++ {
++ tagstack_shift(wp);
++ idx = TAGSTACKSIZE - 1;
++ }
++
++ wp->w_tagstacklen++;
++ tagstack[idx].tagname = tagname;
++ tagstack[idx].cur_fnum = cur_fnum;
++ tagstack[idx].cur_match = cur_match;
++ if (tagstack[idx].cur_match < 0)
++ tagstack[idx].cur_match = 0;
++ tagstack[idx].fmark.mark = mark;
++ tagstack[idx].fmark.fnum = fnum;
++ }
++
++ /*
++ * Add a list of items to the tag stack in the specified window
++ */
++ static void
++ tagstack_push_items(win_T *wp, list_T *l)
++ {
++ listitem_T *li;
++ dictitem_T *di;
++ dict_T *itemdict;
++ char_u *tagname;
++ pos_T mark;
++ int fnum;
++
++ // Add one entry at a time to the tag stack
++ for (li = l->lv_first; li != NULL; li = li->li_next)
++ {
++ if (li->li_tv.v_type != VAR_DICT || li->li_tv.vval.v_dict == NULL)
++ continue; // Skip non-dict items
++ itemdict = li->li_tv.vval.v_dict;
++
++ // parse 'from' for the cursor position before the tag jump
++ if ((di = dict_find(itemdict, (char_u *)"from", -1)) == NULL)
++ continue;
++ if (list2fpos(&di->di_tv, &mark, &fnum, NULL) != OK)
++ continue;
++ if ((tagname =
++ get_dict_string(itemdict, (char_u *)"tagname", TRUE)) == NULL)
++ continue;
++
++ if (mark.col > 0)
++ mark.col--;
++ tagstack_push_item(wp, tagname,
++ (int)get_dict_number(itemdict, (char_u *)"bufnr"),
++ (int)get_dict_number(itemdict, (char_u *)"matchnr") - 1,
++ mark, fnum);
++ }
++ }
++
++ /*
++ * Set the current index in the tag stack. Valid values are between 0
++ * and the stack length (inclusive).
++ */
++ static void
++ tagstack_set_curidx(win_T *wp, int curidx)
++ {
++ wp->w_tagstackidx = curidx;
++ if (wp->w_tagstackidx < 0) // sanity check
++ wp->w_tagstackidx = 0;
++ if (wp->w_tagstackidx > wp->w_tagstacklen)
++ wp->w_tagstackidx = wp->w_tagstacklen;
++ }
++
++ /*
++ * Set the tag stack entries of the specified window.
++ * 'action' is set to either 'a' for append or 'r' for replace.
++ */
++ int
++ set_tagstack(win_T *wp, dict_T *d, int action)
++ {
++ dictitem_T *di;
++ list_T *l;
++
++ if ((di = dict_find(d, (char_u *)"items", -1)) != NULL)
++ {
++ if (di->di_tv.v_type != VAR_LIST)
++ {
++ EMSG(_(e_listreq));
++ return FAIL;
++ }
++ l = di->di_tv.vval.v_list;
++
++ if (action == 'r')
++ tagstack_clear(wp);
++
++ tagstack_push_items(wp, l);
++ }
++
++ if ((di = dict_find(d, (char_u *)"curidx", -1)) != NULL)
++ tagstack_set_curidx(wp, (int)get_tv_number(&di->di_tv) - 1);
++
++ return OK;
++ }
+ #endif
+*** ../vim-8.1.0518/src/testdir/test_tagjump.vim 2018-02-09 18:30:21.000000000 +0100
+--- src/testdir/test_tagjump.vim 2018-11-11 15:09:11.153557467 +0100
+***************
+*** 257,260 ****
+--- 257,369 ----
+ bwipe!
+ endfunc
+
++ " Test for getting and modifying the tag stack
++ func Test_getsettagstack()
++ call writefile(['line1', 'line2', 'line3'], 'Xfile1')
++ call writefile(['line1', 'line2', 'line3'], 'Xfile2')
++ call writefile(['line1', 'line2', 'line3'], 'Xfile3')
++
++ enew | only
++ call settagstack(1, {'items' : []})
++ call assert_equal(0, gettagstack(1).length)
++ call assert_equal([], gettagstack(1).items)
++ " Error cases
++ call assert_equal({}, gettagstack(100))
++ call assert_equal(-1, settagstack(100, {'items' : []}))
++ call assert_fails('call settagstack(1, [1, 10])', 'E715')
++ call assert_fails("call settagstack(1, {'items' : 10})", 'E714')
++ call assert_fails("call settagstack(1, {'items' : []}, 10)", 'E928')
++ call assert_fails("call settagstack(1, {'items' : []}, 'b')", 'E962')
++
++ set tags=Xtags
++ call writefile(["!_TAG_FILE_ENCODING\tutf-8\t//",
++ \ "one\tXfile1\t1",
++ \ "three\tXfile3\t3",
++ \ "two\tXfile2\t2"],
++ \ 'Xtags')
++
++ let stk = []
++ call add(stk, {'bufnr' : bufnr('%'), 'tagname' : 'one',
++ \ 'from' : [bufnr('%'), line('.'), col('.'), 0], 'matchnr' : 1})
++ tag one
++ call add(stk, {'bufnr' : bufnr('%'), 'tagname' : 'two',
++ \ 'from' : [bufnr('%'), line('.'), col('.'), 0], 'matchnr' : 1})
++ tag two
++ call add(stk, {'bufnr' : bufnr('%'), 'tagname' : 'three',
++ \ 'from' : [bufnr('%'), line('.'), col('.'), 0], 'matchnr' : 1})
++ tag three
++ call assert_equal(3, gettagstack(1).length)
++ call assert_equal(stk, gettagstack(1).items)
++ " Check for default - current window
++ call assert_equal(3, gettagstack().length)
++ call assert_equal(stk, gettagstack().items)
++
++ " Try to set current index to invalid values
++ call settagstack(1, {'curidx' : -1})
++ call assert_equal(1, gettagstack().curidx)
++ call settagstack(1, {'curidx' : 50})
++ call assert_equal(4, gettagstack().curidx)
++
++ " Try pushing invalid items onto the stack
++ call settagstack(1, {'items' : []})
++ call settagstack(1, {'items' : ["plate"]}, 'a')
++ call assert_equal(0, gettagstack().length)
++ call assert_equal([], gettagstack().items)
++ call settagstack(1, {'items' : [{"tagname" : "abc"}]}, 'a')
++ call assert_equal(0, gettagstack().length)
++ call assert_equal([], gettagstack().items)
++ call settagstack(1, {'items' : [{"from" : 100}]}, 'a')
++ call assert_equal(0, gettagstack().length)
++ call assert_equal([], gettagstack().items)
++ call settagstack(1, {'items' : [{"from" : [2, 1, 0, 0]}]}, 'a')
++ call assert_equal(0, gettagstack().length)
++ call assert_equal([], gettagstack().items)
++
++ " Push one item at a time to the stack
++ call settagstack(1, {'items' : []})
++ call settagstack(1, {'items' : [stk[0]]}, 'a')
++ call settagstack(1, {'items' : [stk[1]]}, 'a')
++ call settagstack(1, {'items' : [stk[2]]}, 'a')
++ call settagstack(1, {'curidx' : 4})
++ call assert_equal({'length' : 3, 'curidx' : 4, 'items' : stk},
++ \ gettagstack(1))
++
++ " Try pushing items onto a full stack
++ for i in range(7)
++ call settagstack(1, {'items' : stk}, 'a')
++ endfor
++ call assert_equal(20, gettagstack().length)
++ call settagstack(1,
++ \ {'items' : [{'tagname' : 'abc', 'from' : [1, 10, 1, 0]}]}, 'a')
++ call assert_equal('abc', gettagstack().items[19].tagname)
++
++ " Tag with multiple matches
++ call writefile(["!_TAG_FILE_ENCODING\tutf-8\t//",
++ \ "two\tXfile1\t1",
++ \ "two\tXfile2\t3",
++ \ "two\tXfile3\t2"],
++ \ 'Xtags')
++ call settagstack(1, {'items' : []})
++ tag two
++ tnext
++ tnext
++ call assert_equal(1, gettagstack().length)
++ call assert_equal(3, gettagstack().items[0].matchnr)
++
++ " Memory allocation failures
++ call test_alloc_fail(GetAllocId('tagstack_items'), 0, 0)
++ call assert_fails('call gettagstack()', 'E342:')
++ call test_alloc_fail(GetAllocId('tagstack_from'), 0, 0)
++ call assert_fails('call gettagstack()', 'E342:')
++ call test_alloc_fail(GetAllocId('tagstack_details'), 0, 0)
++ call assert_fails('call gettagstack()', 'E342:')
++
++ call settagstack(1, {'items' : []})
++ call delete('Xfile1')
++ call delete('Xfile2')
++ call delete('Xfile3')
++ call delete('Xtags')
++ set tags&
++ endfunc
++
+ " vim: shiftwidth=2 sts=2 expandtab
+*** ../vim-8.1.0518/src/version.c 2018-11-10 20:47:43.394262832 +0100
+--- src/version.c 2018-11-11 15:18:47.861449349 +0100
+***************
+*** 794,795 ****
+--- 794,797 ----
+ { /* Add new patch number below this line */
++ /**/
++ 519,
+ /**/
+
+--
+Q: How does a UNIX Guru pick up a girl?
+A: look; grep; which; eval; nice; uname; talk; date;
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
+/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\ an exciting new programming language -- http://www.Zimbu.org ///
+ \\\ help me help AIDS victims -- http://ICCF-Holland.org ///
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