Regression in reStructuredText (rst) handling

[ale5000-git]

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Bug

Body

Hi,
GitHub cannot display correctly tables in reStructuredText; they was working fine in the past so it is a regession.
Example: https://github.com/ale5000-git/RSTtest/blob/main/README.rst

Best regards,
ale5000

[evdcush]

I can confirm this regression.

GitHub now incorrectly renders a valid literal/code/pre-formatted block of text.

Example:
https://github.com/evdcush/fart/blob/master/README.rst

GitHub rST Regression	Correct Rendering

Please revert whatever recent changes were made to rendering reStructuredText.

[evdcush]

Regression persists; please fix.

[evdcush]

Still broken.

[evdcush]

rST regression persists.

[evdcush]

Same bug reported (and unanswered/unaddressed) here:

https://github.com/orgs/community/discussions/86715

[dargueta]

I see that a lot of people are having trouble with large files. Mine is only 200 lines, and yet some (but not all) tables are very broken (permalink). They rendered fine before. The following examples are taken from the same file, and are the only tables. Screenshots of the correctly rendered code are taken from CLion's RST previewer.

Hopefully this additional information helps!

Simple syntax, works

Code

========= ========= ==================
What      Header    Unhosted Fallbacks
========= ========= ==================
bool      stdbool.h \*
free      stdlib.h  N
malloc    stdlib.h  N
memcmp    string.h  Y
memcpy    string.h  Y
memset    string.h  Y
realloc   stdlib.h  N
SIZE_MAX  stdint.h  \*
size_t    stddef.h  \*
strcmp    string.h  Y
========= ========= ==================

Renders as

Simple syntax, broken

The code

====================== ======== ============
Architecture           Compiles Passes Tests
====================== ======== ============
AMD64 (x86-64)         Y        Y
DS390                  Y
DS400                  Y
ez80-z80               Y
HC08 (Motorola 68HC08) Y
macOS ARM64            Y        Y
MCS-51                 Y
MOS 6502               Y
MOS 65C02              Y
Padauk PDK 13          Y
Padauk PDK 14          Y
Padauk PDK 15          Y
Rabbit 800             Y
Rabbit 2000            Y
Rabbit 2000A           NS
Rabbit 3000A           Y
S08                    Y
SM83                   NS
STM8                   Y
TININative             Y [#]_
TLCS 90                Y
x86-32                 Y        Y
z180                   Y
z80                    Y
z80n                   NS
====================== ======== ============

Renders as

Expected

(The full table is longer but my screen isn't big enough to show it all at once.)

Complex syntax

The code

+-----------------+----------+-----------------------+-----------------------+
| Compiler        | OS       | Hosted                | Unhosted              |
|                 |          +----------+------------+----------+------------+
|                 |          | Compiles | Tests Pass | Compiles | Tests Pass |
+=================+==========+==========+============+==========+============+
| Clang_          | Cygwin   | Y        | Y          | Y        | Y          |
|                 +----------+----------+------------+----------+------------+
|                 | Linux    | Y        | Y          | Y        | Y          |
|                 +----------+----------+------------+----------+------------+
|                 | MacOS    | Y        | Y          | Y        | Y          |
+-----------------+----------+----------+------------+----------+------------+
| GCC_            | Cygwin   | Y        | Y          | Y        | Y          |
|                 +----------+----------+------------+----------+------------+
|                 | Linux    | Y        | Y          | Y        | Y          |
|                 +----------+----------+------------+----------+------------+
|                 | MacOS    | Y        | Y          | Y        | Y          |
+-----------------+----------+----------+------------+----------+------------+
| Intel           | MacOS    |          |            |          |            |
|                 +----------+----------+------------+----------+------------+
|                 | Linux    |          |            |          |            |
+-----------------+----------+----------+------------+----------+------------+
| MinGW_          | Cygwin   | Y        | Y          | Y        | Y          |
|                 +----------+----------+------------+----------+------------+
|                 | Linux    | Y [#]_   | NS         | Y        | NS         |
+-----------------+----------+----------+------------+----------+------------+
| OpenWatcom      | MacOS    |          |            |          |            |
|                 +----------+----------+------------+----------+------------+
|                 | Linux    |          |            |          |            |
+-----------------+----------+----------+------------+----------+------------+
| SDCC_           | See below for the list of architectures this compiles for|
+-----------------+----------+----------+------------+----------+------------+
| TCC_            | Linux    | Y        | Y          | Y        | Y          |
+-----------------+----------+----------+------------+----------+------------+
| Visual Studio   | Windows  |          |            |          |            |
+-----------------+----------+----------+------------+----------+------------+

Renders as

Expected

[evdcush]

Bug persists.

When will GitHub acknowledge the bug?

[evdcush]

Issue persists.