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[201_101] fix: allow spaces after separator symbols in math mode #3040

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[201_101] fix: allow spaces after separator symbols in math mode #3040

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2 changes: 1 addition & 1 deletion TeXmacs/progs/math/math-edit.scm
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Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,7 @@
(let* ((s (tm->string b))
(last (and (!= s "") (tmstring-reverse-ref s 0)))
(type (and last (math-symbol-type last))))
(nin? type (list "prefix" "infix" "separator" "prefix-infix"
(nin? type (list "prefix" "infix" "prefix-infix"
"opening-bracket" "middle-bracket"))))))

(tm-define (skip-decorations-leftwards t)
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15 changes: 15 additions & 0 deletions devel/201_101.md
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@@ -0,0 +1,15 @@
# #3027 Fix: Allow spaces after separator symbols in math mode

## 2026/03/26

## What
Updated `allow-space-after?` in `math-edit.scm` to permit space insertion after symbols classified as `"separator"`.

## Why
In math mode, spaces could not be inserted after certain symbols such as commas (`,`), while other punctuation like periods (`.`) allowed spacing. This inconsistency was caused by `"separator"` symbols being explicitly excluded from allowing spaces, leading to unintuitive typing behavior.

## How
Removed `"separator"` from the exclusion list in `allow-space-after?`. This enables normal space insertion after separator symbols, including `,`, `;`, and `:`.

## Test
- Verified space insertion after `,`, `;`, `:` works correctly.