Typos

Merge branch 'thecasterian/dmstag-general-multigrid' into 'main'

DMStag: support general multigrid scheme

See merge request petsc/petsc!7250

Merge branch 'barry/2024-01-19/typedef-snes-functions' into 'main'

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

See merge request petsc/petsc!7206

Change the use of the _Fn suffix to indicate a typedef of a function to just Fn

As determined on a vote on GitLab

Update `PetscSimplePointFunc` to new naming convention `PetscSimplePoint_Fn`

Commit-type: housekeeping

Change PETSc sys typedef function names to use the new _Fn format

Commit-type: housekeeping, maintainance

Minor copyediting of vector chapter of users manual

Update changes

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

I never liked Jed's use of typedef for function prototypes for a couple of reasons

1) you don't see immediately tha

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

I never liked Jed's use of typedef for function prototypes for a couple of reasons

1) you don't see immediately that the argument to the function is a function pointer instead of standard variable when looking at source
2) you don't see at the exact location in the code the prototype of the function being passed in

but there is something to say for using these typedefs so

I've prototyped the change for SNES but slightly differently than what Jed did for TS

1) I append the typedef with _Ftn to mark that it is a function (helping to relieve the problem 1 above)
2) I made the typedef to be for a function, not a function pointer so it can also be used directly for things like

PETSC_EXTERN SNESJacobian_Ftn SNESComputeJacobianDefault;

I think the TS usage could be switched to this style without user code breakage, and deprecate the current TS typedef

Thoughts?

Just do SNES the same way as TS and live with less clarity?

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generateetags.py: use raw string to avoid warning on macOS

$ make alletags
/Users/jroman/soft/petsc/lib/petsc/bin/maint/generateetags.py:176: SyntaxWarning: invalid escape sequence '\('
output = c

generateetags.py: use raw string to avoid warning on macOS

$ make alletags
/Users/jroman/soft/petsc/lib/petsc/bin/maint/generateetags.py:176: SyntaxWarning: invalid escape sequence '\('
output = check_output('git ls-files | grep -E -v \(^\(systems/\|share/petsc/datafiles/\)\|/output/\|\.\(png\|pdf\|ps\|ppt\|jpg\)$\)', shell=True)

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Merge branch 'release'

Increase patchlevel to 3.20.4

Merge branch 'jczhang/2024-01-29/fix-err-msg-vecreplacearray' into 'main'

Add better error message in the unsupported VecReplaceArray() after VecDuplicateVecs

Closes #1537

See merge request petsc/

Merge branch 'jczhang/2024-01-29/fix-err-msg-vecreplacearray' into 'main'

Add better error message in the unsupported VecReplaceArray() after VecDuplicateVecs

Closes #1537

See merge request petsc/petsc!7245

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Vec: add better error message in the unsupported VecReplaceArray() on the first Vec got from VecDuplicateVecs()

close #1537

Merge branch 'jolivet/feature-composite-as-shell' into 'main'

MatComposite, MatNormal, and MatHermitianNormal as a MatShell

See merge request petsc/petsc!7226

Merge branch 'adams/gamg-feature-injection' into 'main'

GAMG: add injection for C1 elements

See merge request petsc/petsc!7236

Docs: update change log

gamg: adding injection restriction/prolongation (for C1 elements)

Merge branch 'stefanozampini/snes-ex11' into 'main'

New simplified SNES + PLEX example

See merge request petsc/petsc!7235

Merge remote-tracking branch 'origin/release'

DMPLEX: handle material parameters in subdomain callbacks

Add DMClearAuxiliaryVec

Update file petsc.bib

DM+DS: Function to sync DS labels based on names

Merge branch 'jose/matproduct-getalgorithm' into 'main'

Add missing interface function MatProductGetAlgorithm()

See merge request petsc/petsc!7225

Add missing interface function MatProductGetAlgorithm()