Text.current_character wrong value for certain characters #65843

New Issue

Kai Jægersen · 2019-06-15T23:29:18+02:00

Kai Jægersen commented

2019-06-15 23:29:18 +02:00

System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.17

Blender Version
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-14 23:24, hash: blender/blender@0fd96b4128
Worked: Never. 2.79 has the same issue.

Short description of error
Property current_character and select_end_character on bpy.types.Text objects both report wrong values for some unicode characters. Some characters have a size of 2 and some have 3.

Exact steps for others to reproduce the error

Open blend-file
Set caret position at the end of line 13
Run script and see console
Set caret position at the end of line 14
Run script and see console
Take note of the caret position difference

[Based on the default startup or an attached .blend file (as simple as possible)]

text_current_character.blend

![text_current_caracter.gif](https://archive.blender.org/developer/F7105041/text_current_caracter.gif) **System Information** Operating system: Windows-10-10.0.17763 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.17 **Blender Version** Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-14 23:24, hash: `blender/blender@0fd96b4128` Worked: Never. 2.79 has the same issue. **Short description of error** Property `current_character` and `select_end_character` on `bpy.types.Text` objects both report wrong values for some unicode characters. Some characters have a size of 2 and some have 3. **Exact steps for others to reproduce the error** 1. Open blend-file 2. Set caret position at the end of line 13 3. Run script and see console 4. Set caret position at the end of line 14 5. Run script and see console 6. Take note of the caret position difference [Based on the default startup or an attached .blend file (as simple as possible)] [text_current_character.blend](https://archive.blender.org/developer/F7105046/text_current_character.blend)

Kai Jægersen commented

2019-06-15 23:29:18 +02:00

Added subscriber: @KaiJaegersen

Philipp Oeser commented

2019-06-17 13:41:26 +02:00

Added subscriber: @lichtwerk

Philipp Oeser self-assigned this 2019-06-17 13:41:26 +02:00

Philipp Oeser commented

2019-06-17 13:41:26 +02:00

Can confirm.

current_character and select_end_character are directly pointing to text DNA curc, selc (and these can indeed inherit the "error" of unicode characters having a differrent length that one...)

Guess this could be resolved by making a rna property func that takes these into account using txt_utf8_offset_to_index or BLI_str_utf8_size...
Can check [might take a bit though...]

Can confirm. `current_character` and `select_end_character` are directly pointing to text DNA `curc`, `selc` (and these can indeed inherit the "error" of unicode characters having a differrent length that one...) Guess this could be resolved by making a rna property func that takes these into account using `txt_utf8_offset_to_index` or `BLI_str_utf8_size`... Can check [might take a bit though...]

Kai Jægersen commented

2019-06-17 17:27:38 +02:00

In #65843#702373, @lichtwerk wrote:
Can confirm.

current_character and select_end_character are directly pointing to text DNA curc, selc (and these can indeed inherit the "error" of unicode characters having a differrent length that one...)

Guess this could be resolved by making a rna property func that takes these into account using txt_utf8_offset_to_index or BLI_str_utf8_size...
Can check [might take a bit though...]

The characters are unusual to come across so this isn't exactly a pressing issue, but thanks for looking into it!

Having it report correct caret position would be helpful for extending the functionality of the text editor using python.

> In #65843#702373, @lichtwerk wrote: > Can confirm. > > `current_character` and `select_end_character` are directly pointing to text DNA `curc`, `selc` (and these can indeed inherit the "error" of unicode characters having a differrent length that one...) > > Guess this could be resolved by making a rna property func that takes these into account using `txt_utf8_offset_to_index` or `BLI_str_utf8_size`... > Can check [might take a bit though...] The characters are unusual to come across so this isn't exactly a pressing issue, but thanks for looking into it! Having it report correct caret position would be helpful for extending the functionality of the text editor using python.

Campbell Barton commented

2019-10-03 22:36:25 +02:00

Added subscriber: @ideasman42