From b511cd59ff8ec301e18319635f3c45443de4c8a7 Mon Sep 17 00:00:00 2001
From: Roy-043 <70520633+Roy-043@users.noreply.github.com>
Date: Fri, 14 Nov 2025 19:58:24 +0100
Subject: [PATCH] Core: workaround for Building US unit system bug (#25288)

* Core: workaround for Building US unit system bug

Fixes #11345

This workaround should hopefully fix the Building US unit system bug at the level of the InputField code. This is the most feasible solution given that we are currently in the v1.1 feature freeze.

I use the word "hopefully" because I have not compiled and tested the code. But replacing `+` with `--` works in Python examples.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Fix typo in comment

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
---
 src/Gui/InputField.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Gui/InputField.cpp b/src/Gui/InputField.cpp
index 1d1ec67866..6ff5b3128f 100644
--- a/src/Gui/InputField.cpp
+++ b/src/Gui/InputField.cpp
@@ -769,6 +769,12 @@ void InputField::fixup(QString& input) const
     if (localePlus != asciiPlus) {
         input.replace(localePlus, asciiPlus);
     }
+
+    // workaround for improper handling of plus sign
+    // in Building US unit system
+    // https://github.com/FreeCAD/FreeCAD/issues/11345
+    QString asciiMinusMinus(QStringLiteral("--"));
+    input.replace(asciiPlus, asciiMinusMinus);
 }
 
 QValidator::State InputField::validate(QString& input, int& pos) const