How to Strip MTEXT Inline Formatting Overrides (Color, Font & Width Codes)
Remove hardcoded RTF inline color (\C), font (\f), height (\H), and width (\W) overrides inside MTEXT and Multileaders so text obeys ByLayer and TextStyle standards.
⚡ Quick Executive Fix
Double-click the MTEXT to open the In-Place Editor, press Ctrl+A to select all text, and click 'Remove Formatting > Remove All Formatting' on the Ribbon (or press Ctrl+Spacebar). For 1,000+ objects, run our StripMtext AutoLISP scrubber.
1. Engineering Root-Cause Diagnosis inside the AC1032 DWG Database
A chronic frustration for CAD Managers occurs when changing a layer's color in the Layer Properties Manager—or updating the font inside `STYLE`—has **zero effect** on dozens of `MTEXT`, `MLEADER`, and `DIMENSION` callouts. Inspecting the entity's DXF Group `1` string via `(entget (car (entsel)))` reveals embedded Rich-Text control sequences such as {\fArial|b1|i0;\C1;\H2.5x;NOTES:} pasted from Word/PDF or applied via the MTEXT ribbon toolbar, which override `ByLayer` and `TextStyle` inheritance.
2. Step-by-Step Resolution Protocol in AutoCAD & GstarCAD 2027
1. Single-Entity Fix: Ctrl+A + Ctrl+Spacebar in MTEXT Editor
Double-click the offending `MTEXT` object, press Ctrl+A to highlight all paragraphs, and press Ctrl+Spacebar (or click **Clear → Remove All Formatting** in the Text Editor contextual ribbon tab).
2. Prevent Future Word/Excel Paste Pollution (PASTESPEC)
When copying specification clauses from Microsoft Word or PDF into a drawing, do not press `Ctrl+V` directly inside the MTEXT editor. Instead, use **Paste Special → Paste as Plain Text (Unformatted Unicode Text)**.
3. Batch-Scrub Inline Codes Across Entire Drawings via AutoLISP
Use the production regular-expression / string-parser AutoLISP routine below (`C:CLEANMTEXT`) to strip `\f`, `\C`, `\H`, `\W`, `\Q`, and `\T` inline overrides across thousands of `MTEXT` and `MULTILEADER` entities in one second.
3. Automated AutoLISP Diagnostic & Repair Script (C:CLEANMTEXT)
Load the following production AutoLISP routine into GstarCAD 2027 or AutoCAD via APPLOAD (or add it to gcaddoc.lsp) to automate this repair across affected project files:
(defun C:CLEANMTEXT ( / ss i ent obj regEx raw clean)
(vl-load-com)
(princ "\nSelect MTEXT entities to strip inline font/color/height overrides: ")
(if (setq ss (ssget '((0 . "MTEXT"))))
(progn
(setq regEx (vlax-create-object "VBScript.RegExp"))
(vlax-put-property regEx 'Global :vlax-true)
(vlax-put-property regEx 'IgnoreCase :vlax-true)
;; Match inline control codes: \f...; \C...; \H...; \W...; \A...;
(vlax-put-property regEx 'Pattern "(\\[fFcChHwWtTqQaA][^;]+;|[{}])")
(repeat (setq i (sslength ss))
(setq ent (ssname ss (setq i (1- i)))
obj (vlax-ename->vla-object ent)
raw (vla-get-TextString obj)
clean (vlax-invoke regEx 'Replace raw ""))
(vla-put-TextString obj clean)
(vla-put-Color obj acByLayer)
)
(vlax-release-object regEx)
(princ (strcat "\n[CLEANMTEXT] Scrubbed inline overrides from " (itoa (sslength ss)) " MTEXT objects."))
)
)
(princ)
)4. Diagnostic System Variables & Edge-Case Matrix
| Failure Symptom / Scenario | Command / SysVar | Production Remediation Rule |
|---|---|---|
| MTEXT stays red even when Layer is set to White | Strip \C1; inline code |
Internal MTEXT color code overrides entity ByLayer color. |
| MTEXT ignores TextStyle font change | Strip \fArial; inline code |
Character-level font override pasted from Word; run C:CLEANMTEXT. |
| Paragraph line spacing is crushed or huge | TSPACEFAC = 1.0 |
Reset MTEXT line spacing factor to 1.0x Exact/At Least. |
Experience Faster, Corruption-Free DWG Engineering in GstarCAD 2027
Built by Suzhou Gstarsoft Co., Ltd. (SSE: 688657), GstarCAD 2027 features multi-threaded DWG open/save, built-in RegApp/Scale-List scrubbers, and perpetual licensing.