fix readline redisplay issue with a prompt containing terminal escape sequences that needs to change (e.g., to show the vi editing mode) after a paste that leaves the cursor in column 0; fix readline display overflow with a prompt that contains more than 256 wrapped lines

CWRU/CWRU.chlog

@@ -13053,3 +13053,22 @@ builtins/exec.def,builtins/hash.def,builtins/help.def,builtins/history.def
 builtins/source.def,builtins/type.def
 	- sanitize command and file names used in error messages by calling
 	  printable_filename
+
+				   6/16
+				   ----
+lib/readline/display.c
+	- update_line: when we are deciding whether or not we have to redraw
+	  the prompt string because the first difference is in the middle of
+	  a prompt with potential invisible characters, check even if the
+	  cursor is at column 0 -- we might choose to move forward to the
+	  first difference by moving the cursor instead of redrawing chars,
+	  so we might skip over the initial part of a CSI sequence
+	  Report from Derek Schrock <dereks@lifeofadishwasher.com>
+
+				   6/26
+				   ----
+lib/readline/display.c
+	- rl_redisplay: make sure to use CHECK_INV_LBREAKS() when copying
+	  local_prompt_newlines into the inv_lbreaks array in case the
+	  prompt consumes more lines than the initial 256 inv_lbreaks size
+	  Report from Ben Kallus <benjamin.p.kallus.gr@dartmouth.edu>

lib/readline/display.c

@@ -1024,6 +1024,7 @@ rl_redisplay (void)
       while (local_prompt_newlines[newlines+1] != -1)
 	{
 	  temp = local_prompt_newlines[newlines+1];
+	  CHECK_INV_LBREAKS ();
 	  inv_lbreaks[++newlines] = temp;
 	}  
 
@@ -2218,6 +2219,9 @@ update_line (char *old, char *old_face, char *new, char *new_face, int current_l
 	 can't directly check it) is still on the visible line because we
 	 haven't overwritten it yet. We guess that there aren't any invisible
 	 characters in any of the prompts we put in with rl_message */
+      /* This is wrong if the prompt is switching between two variants, both
+	 with invisible characters (e.g., when using mode strings with terminal
+	 escape sequences). */
       else if (current_line == 0 && local_prompt && new[0] == local_prompt[0] &&
 		 (memcmp (new, local_prompt, local_prompt_len) == 0) &&
 		 (memcmp (old, local_prompt, local_prompt_len) != 0))
@@ -2261,11 +2265,12 @@ update_line (char *old, char *old_face, char *new, char *new_face, int current_l
   od = ofd - old;	/* index of first difference in visible line */
   nd = nfd - new;	/* nd, od are buffer indexes */
   if (current_line == 0 && !_rl_horizontal_scroll_mode &&
-      _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 &&
+      _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos >= 0 &&
       (((od > 0 || nd > 0) && (od <= prompt_last_invisible || nd <= prompt_last_invisible)) ||
 		((od >= lendiff) && _rl_last_c_pos < PROMPT_ENDING_INDEX)))
     {
-      _rl_cr ();
+      if (_rl_last_c_pos > 0)
+	_rl_cr ();
       if (modmark)
 	_rl_output_some_chars ("*", 1);
       _rl_output_some_chars (local_prompt, lendiff);

po/cs.po

@@ -3,7 +3,7 @@
 # This file is distributed under the same license as the bash package.
 # Petr Pisar <petr.pisar@atlas.cz>, 2008, 2009, 2010, 2011, 2012, 2013, 2014.
 # Petr Pisar <petr.pisar@atlas.cz>, 2015, 2016, 2018, 2019, 2020, 2022, 2023.
-# Petr Pisar <petr.pisar@atlas.cz>, 2025.
+# Petr Pisar <petr.pisar@atlas.cz>, 2025, 2026.
 #
 # alias → alias
 # subscript → podskript
@@ -16,7 +16,7 @@ msgstr ""
 "Project-Id-Version: bash 5.3-rc2\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2025-04-22 09:37-0400\n"
-"PO-Revision-Date: 2025-06-03 21:27+02:00\n"
+"PO-Revision-Date: 2026-06-19 21:45+02:00\n"
 "Last-Translator: Petr Pisar <petr.pisar@atlas.cz>\n"
 "Language-Team: Czech <translation-team-cs@lists.sourceforge.net>\n"
 "Language: cs\n"
@@ -1186,7 +1186,7 @@ msgstr "chybná celočíselná konstanta"
 
 #: expr.c:1620
 msgid "value too great for base"
-msgstr "hodnot je pro základ příliš velká"
+msgstr "hodnota je pro základ příliš velká"
 
 #: expr.c:1671
 #, c-format