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+To: vim_dev@googlegroups.com
+Subject: Patch 8.1.0814
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 8.1.0814
+Problem: :mksession cannot handle a very long 'runtimepath'. (Timothy
+ Madden)
+Solution: Expand each part separately, instead of the whole option at once.
+ (Christian Brabandt, closes #3466)
+Files: src/option.c, src/testdir/test_mksession.vim
+
+
+*** ../vim-8.1.0813/src/option.c 2019-01-24 15:54:17.794846944 +0100
+--- src/option.c 2019-01-24 20:23:14.225567873 +0100
+***************
+*** 3243,3249 ****
+ static void showoptions(int all, int opt_flags);
+ static int optval_default(struct vimoption *, char_u *varp);
+ static void showoneopt(struct vimoption *, int opt_flags);
+! static int put_setstring(FILE *fd, char *cmd, char *name, char_u **valuep, int expand);
+ static int put_setnum(FILE *fd, char *cmd, char *name, long *valuep);
+ static int put_setbool(FILE *fd, char *cmd, char *name, int value);
+ static int istermoption(struct vimoption *);
+--- 3243,3249 ----
+ static void showoptions(int all, int opt_flags);
+ static int optval_default(struct vimoption *, char_u *varp);
+ static void showoneopt(struct vimoption *, int opt_flags);
+! static int put_setstring(FILE *fd, char *cmd, char *name, char_u **valuep, long_u flags);
+ static int put_setnum(FILE *fd, char *cmd, char *name, long *valuep);
+ static int put_setbool(FILE *fd, char *cmd, char *name, int value);
+ static int istermoption(struct vimoption *);
+***************
+*** 10297,10303 ****
+ do_endif = TRUE;
+ }
+ if (put_setstring(fd, cmd, p->fullname, (char_u **)varp,
+! (p->flags & P_EXPAND) != 0) == FAIL)
+ return FAIL;
+ if (do_endif)
+ {
+--- 10297,10303 ----
+ do_endif = TRUE;
+ }
+ if (put_setstring(fd, cmd, p->fullname, (char_u **)varp,
+! p->flags) == FAIL)
+ return FAIL;
+ if (do_endif)
+ {
+***************
+*** 10319,10332 ****
+ int
+ makefoldset(FILE *fd)
+ {
+! if (put_setstring(fd, "setlocal", "fdm", &curwin->w_p_fdm, FALSE) == FAIL
+ # ifdef FEAT_EVAL
+! || put_setstring(fd, "setlocal", "fde", &curwin->w_p_fde, FALSE)
+ == FAIL
+ # endif
+! || put_setstring(fd, "setlocal", "fmr", &curwin->w_p_fmr, FALSE)
+ == FAIL
+! || put_setstring(fd, "setlocal", "fdi", &curwin->w_p_fdi, FALSE)
+ == FAIL
+ || put_setnum(fd, "setlocal", "fdl", &curwin->w_p_fdl) == FAIL
+ || put_setnum(fd, "setlocal", "fml", &curwin->w_p_fml) == FAIL
+--- 10319,10332 ----
+ int
+ makefoldset(FILE *fd)
+ {
+! if (put_setstring(fd, "setlocal", "fdm", &curwin->w_p_fdm, 0) == FAIL
+ # ifdef FEAT_EVAL
+! || put_setstring(fd, "setlocal", "fde", &curwin->w_p_fde, 0)
+ == FAIL
+ # endif
+! || put_setstring(fd, "setlocal", "fmr", &curwin->w_p_fmr, 0)
+ == FAIL
+! || put_setstring(fd, "setlocal", "fdi", &curwin->w_p_fdi, 0)
+ == FAIL
+ || put_setnum(fd, "setlocal", "fdl", &curwin->w_p_fdl) == FAIL
+ || put_setnum(fd, "setlocal", "fml", &curwin->w_p_fml) == FAIL
+***************
+*** 10345,10354 ****
+ char *cmd,
+ char *name,
+ char_u **valuep,
+! int expand)
+ {
+ char_u *s;
+! char_u *buf;
+
+ if (fprintf(fd, "%s %s=", cmd, name) < 0)
+ return FAIL;
+--- 10345,10356 ----
+ char *cmd,
+ char *name,
+ char_u **valuep,
+! long_u flags)
+ {
+ char_u *s;
+! char_u *buf = NULL;
+! char_u *part = NULL;
+! char_u *p;
+
+ if (fprintf(fd, "%s %s=", cmd, name) < 0)
+ return FAIL;
+***************
+*** 10364,10375 ****
+ if (put_escstr(fd, str2special(&s, FALSE), 2) == FAIL)
+ return FAIL;
+ }
+! else if (expand)
+ {
+! buf = alloc(MAXPATHL);
+ if (buf == NULL)
+! return FAIL;
+! home_replace(NULL, *valuep, buf, MAXPATHL, FALSE);
+ if (put_escstr(fd, buf, 2) == FAIL)
+ {
+ vim_free(buf);
+--- 10366,10411 ----
+ if (put_escstr(fd, str2special(&s, FALSE), 2) == FAIL)
+ return FAIL;
+ }
+! // expand the option value, replace $HOME by ~
+! else if ((flags & P_EXPAND) != 0)
+ {
+! int size = (int)STRLEN(*valuep) + 1;
+!
+! // replace home directory in the whole option value into "buf"
+! buf = alloc(size);
+ if (buf == NULL)
+! goto fail;
+! home_replace(NULL, *valuep, buf, size, FALSE);
+!
+! // If the option value is longer than MAXPATHL, we need to append
+! // earch comma separated part of the option separately, so that it
+! // can be expanded when read back.
+! if (size >= MAXPATHL && (flags & P_COMMA) != 0
+! && vim_strchr(*valuep, ',') != NULL)
+! {
+! part = alloc(size);
+! if (part == NULL)
+! goto fail;
+!
+! // write line break to clear the option, e.g. ':set rtp='
+! if (put_eol(fd) == FAIL)
+! goto fail;
+!
+! p = buf;
+! while (*p != NUL)
+! {
+! // for each comma separated option part, append value to
+! // the option, :set rtp+=value
+! if (fprintf(fd, "%s %s+=", cmd, name) < 0)
+! goto fail;
+! (void)copy_option_part(&p, part, size, ",");
+! if (put_escstr(fd, part, 2) == FAIL || put_eol(fd) == FAIL)
+! goto fail;
+! }
+! vim_free(buf);
+! vim_free(part);
+! return OK;
+! }
+ if (put_escstr(fd, buf, 2) == FAIL)
+ {
+ vim_free(buf);
+***************
+*** 10383,10388 ****
+--- 10419,10428 ----
+ if (put_eol(fd) < 0)
+ return FAIL;
+ return OK;
++ fail:
++ vim_free(buf);
++ vim_free(part);
++ return FAIL;
+ }
+
+ static int
+*** ../vim-8.1.0813/src/testdir/test_mksession.vim 2019-01-24 15:57:25.321532574 +0100
+--- src/testdir/test_mksession.vim 2019-01-24 19:56:04.503236163 +0100
+***************
+*** 3,9 ****
+ set encoding=latin1
+ scriptencoding latin1
+
+! if !has('multi_byte') || !has('mksession')
+ finish
+ endif
+
+--- 3,9 ----
+ set encoding=latin1
+ scriptencoding latin1
+
+! if !has('mksession')
+ finish
+ endif
+
+***************
+*** 126,131 ****
+--- 126,154 ----
+ call delete('Xtest_mks_winheight.out')
+ endfunc
+
++ func Test_mksession_rtp()
++ new
++ let _rtp=&rtp
++ " Make a real long (invalid) runtimepath value,
++ " that should exceed PATH_MAX (hopefully)
++ let newrtp=&rtp.',~'.repeat('/foobar', 1000)
++ let newrtp.=",".expand("$HOME")."/.vim"
++ let &rtp=newrtp
++
++ " determine expected value
++ let expected=split(&rtp, ',')
++ let expected = map(expected, '"set runtimepath+=".v:val')
++ let expected = ['set runtimepath='] + expected
++ let expected = map(expected, {v,w -> substitute(w, $HOME, "~", "g")})
++
++ mksession! Xtest_mks.out
++ let &rtp=_rtp
++ let li = filter(readfile('Xtest_mks.out'), 'v:val =~# "runtimepath"')
++ call assert_equal(expected, li)
++
++ call delete('Xtest_mks.out')
++ endfunc
++
+ func Test_mksession_arglist()
+ argdel *
+ next file1 file2 file3 file4
+*** ../vim-8.1.0813/src/version.c 2019-01-24 19:37:35.912390940 +0100
+--- src/version.c 2019-01-24 20:30:18.569799280 +0100
+***************
+*** 789,790 ****
+--- 789,792 ----
+ { /* Add new patch number below this line */
++ /**/
++ 814,
+ /**/
+
+--
+Yah, well, we had to carve our electrons out of driftwood we'd
+find. In the winter. Uphill. Both ways.
+
+ /// 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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