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cas/1f/1f189c4566aa35950964647b9ec3be1a821e42b86048129c63eb7f9d4d2f5a74
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| 1 |
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READLINE PATCH REPORT
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=====================
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Readline-Release: 8.3
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Patch-ID: readline83-004
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Bug-Reported-by: Lennart Ackermans <lennart@ackermans.ch>
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Bug-Reference-ID: <d6f36c30-633a-4e5e-8212-806db6441bf1@ackermans.ch>
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Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-bash/2026-05/msg00066.html
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Bug-Description:
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If readline is invoked with the cursor somewhere other than column 0, and
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the prompt contains multibyte characters, the display algorithm needs to
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use a buffer offset, instead of the physical prompt length, to determine
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whether or not to reprint the prompt from column 0 because the cursor is
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before the last invisible character in the prompt string.
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Patch (apply with `patch -p0'):
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Lennart Ackermans <lennart@ackermans.ch> 5/19/2026
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*** ../readline-8.3-patched/display.c Thu Sep 4 11:55:37 2025
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--- display.c Fri May 22 14:55:01 2026
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***************
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*** 1498,1502 ****
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only need to reprint it if the cursor is before the last
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invisible character in the prompt string. */
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- /* XXX - why not use local_prompt_len? */
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nleft = prompt_visible_length + wrap_offset;
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if (cursor_linenum == prompt_last_screen_line)
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--- 1498,1501 ----
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***************
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*** 1510,1518 ****
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buffer position, an index into curline
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(local_prompt + pmt_offset) */
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! cursor_bufpos = pmt_offset;
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! if (mb_cur_max == 1 || rl_byte_oriented)
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! cursor_bufpos += _rl_last_c_pos;
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! else
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! cursor_bufpos += _rl_last_c_pos + curline_invchars;
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if (local_prompt && local_prompt_invis_chars[cursor_linenum] &&
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--- 1509,1513 ----
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buffer position, an index into curline
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(local_prompt + pmt_offset) */
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! cursor_bufpos = pmt_offset + local_prompt_len;
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if (local_prompt && local_prompt_invis_chars[cursor_linenum] &&
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*** ../readline-8.3/patchlevel 2013-11-15 08:11:11.000000000 -0500
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--- patchlevel 2024-03-21 08:28:40.000000000 -0400
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***************
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*** 1,3 ****
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# Do not edit -- exists only for use by patch
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! 3
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--- 1,3 ----
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# Do not edit -- exists only for use by patch
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! 4
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