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+To: vim_dev@googlegroups.com
+Subject: Patch 8.1.0154
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 8.1.0154
+Problem: Crash with "set smarttab shiftwidth=0 softtabstop=-1".
+Solution: Fall back to using 'tabstop'. (closes #3155)
+Files: src/edit.c, src/testdir/test_tab.vim
+
+
+*** ../vim-8.1.0153/src/edit.c 2018-07-02 20:51:21.031882115 +0200
+--- src/edit.c 2018-07-05 22:23:27.440802276 +0200
+***************
+*** 9347,9366 ****
+ && (!*inserted_space_p
+ || arrow_used))))))
+ {
+- #ifndef FEAT_VARTABS
+ int ts;
+- #endif
+ colnr_T vcol;
+ colnr_T want_vcol;
+ colnr_T start_vcol;
+
+ *inserted_space_p = FALSE;
+- #ifndef FEAT_VARTABS
+- if (p_sta && in_indent)
+- ts = (int)get_sw_value(curbuf);
+- else
+- ts = (int)get_sts_value();
+- #endif
+ /* Compute the virtual column where we want to be. Since
+ * 'showbreak' may get in the way, need to get the last column of
+ * the previous character. */
+--- 9347,9358 ----
+***************
+*** 9371,9381 ****
+ inc_cursor();
+ #ifdef FEAT_VARTABS
+ if (p_sta && in_indent)
+! want_vcol = (want_vcol / curbuf->b_p_sw) * curbuf->b_p_sw;
+ else
+ want_vcol = tabstop_start(want_vcol, get_sts_value(),
+ curbuf->b_p_vsts_array);
+ #else
+ want_vcol = (want_vcol / ts) * ts;
+ #endif
+
+--- 9363,9380 ----
+ inc_cursor();
+ #ifdef FEAT_VARTABS
+ if (p_sta && in_indent)
+! {
+! ts = (int)get_sw_value(curbuf);
+! want_vcol = (want_vcol / ts) * ts;
+! }
+ else
+ want_vcol = tabstop_start(want_vcol, get_sts_value(),
+ curbuf->b_p_vsts_array);
+ #else
++ if (p_sta && in_indent)
++ ts = (int)get_sw_value(curbuf);
++ else
++ ts = (int)get_sts_value();
+ want_vcol = (want_vcol / ts) * ts;
+ #endif
+
+***************
+*** 10200,10206 ****
+ #ifdef FEAT_VARTABS
+ if (p_sta && ind) /* insert tab in indent, use 'shiftwidth' */
+ {
+! temp = (int)curbuf->b_p_sw;
+ temp -= get_nolist_virtcol() % temp;
+ }
+ else if (tabstop_count(curbuf->b_p_vsts_array) > 0 || curbuf->b_p_sts != 0)
+--- 10199,10205 ----
+ #ifdef FEAT_VARTABS
+ if (p_sta && ind) /* insert tab in indent, use 'shiftwidth' */
+ {
+! temp = (int)get_sw_value(curbuf);
+ temp -= get_nolist_virtcol() % temp;
+ }
+ else if (tabstop_count(curbuf->b_p_vsts_array) > 0 || curbuf->b_p_sts != 0)
+*** ../vim-8.1.0153/src/testdir/test_tab.vim 2018-07-02 20:51:21.035882093 +0200
+--- src/testdir/test_tab.vim 2018-07-05 22:19:41.994015889 +0200
+***************
+*** 76,81 ****
+ exe "normal A\<BS>x\<Esc>"
+ call assert_equal("x x", getline(1))
+
+! set sts=0 sw=0 backspace&
+ bwipe!
+ endfunc
+--- 76,90 ----
+ exe "normal A\<BS>x\<Esc>"
+ call assert_equal("x x", getline(1))
+
+! call setline(1, 'x')
+! set sts=-1 sw=0 smarttab
+! exe "normal I\<Tab>\<Esc>"
+! call assert_equal("\tx", getline(1))
+!
+! call setline(1, 'x')
+! exe "normal I\<Tab>\<BS>\<Esc>"
+! call assert_equal("x", getline(1))
+!
+! set sts=0 sw=0 backspace& nosmarttab
+ bwipe!
+ endfunc
+*** ../vim-8.1.0153/src/version.c 2018-07-05 17:11:15.726937929 +0200
+--- src/version.c 2018-07-05 22:26:36.351782249 +0200
+***************
+*** 791,792 ****
+--- 791,794 ----
+ { /* Add new patch number below this line */
++ /**/
++ 154,
+ /**/
+
+--
+A computer program does what you tell it to do, not what you want it to do.
+
+ /// 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 ///