Add support for plain text.

README.md

@@ -98,7 +98,9 @@ For NeoVim with `init.lua`:
 vim.g.licenser_author = "Your Name"
 ```
 
-### Supported Licenses
+### Licenses
+
+#### Supported Licenses
 
 vim-licenser includes templates for the following licenses:
 
@@ -118,17 +120,7 @@ vim-licenser includes templates for the following licenses:
 
 Use tab completion to see all available licenses: `:Licenser <TAB>`
 
-### Supported File Types
-
-vim-licenser automatically detects your file type and applies the appropriate
-comment style. Supported file types include:
-bash, c, cpp, csharp, css, dart, go, groovy, haskell, html, java, javascript,
-json, kotlin, lua, matlab, perl, php, python, r, ruby, rust, scala, shell, sql,
-swift, typescript, typescriptreact, vim, xml, yaml
-
-For more information, see `:help licenser` after installation.
-
-## Adding New Licenses
+#### Adding New Licenses
 
 To add a new license, create a new file in the `licenses` directory with the
 name of the license (e.g., `MIT.txt`) and add the license text to the file. The
@@ -136,6 +128,37 @@ license text can contain the YEAR and AUTHOR placeholders, which will be
 replaced with the current year and the author name when the license header is
 added to the source file.
 
+### File Types
+
+#### Supported File Types
+
+vim-licenser automatically detects your file type and applies the appropriate
+comment style. Supported file types include:
+bash, c, cmake, cpp, csharp, css, dart, go, groovy, haskell, html, java,
+javascript, json, kotlin, lua, matlab, perl, php, python, r, ruby, rust, scala,
+shell, sql, swift, text, typescript, typescriptreact, vim, xml, yaml
+
+For more information, see `:help licenser` after installation.
+
+#### Adding Support for New File Types
+
+To add support for a new file type, add an entry to the `comment_styles`
+dictionary in the `plugin/licenser.vim` file. The key should be the file type
+as recognized by Vim/NeoVim, and the contents should be as follows:
+
+- `margin`: If the prefix and suffix should be used on their own lines. E.g. in
+  C and C++ the comment style is `/* */`, so the margin should be set to `1`.
+  In Python, the comment style is `#`, so the margin should be set to `0`.
+- `hashbang`: If the file type supports shebang a line (e.g., `#!/usr/bin/env
+  python3`), set this to `1`. Otherwise, set it to `0`. This is used to
+  determine if the license header should be added after the shebang line.
+- `prefix`: Comment string to use on the first line. Unused if `margin` is set
+  to `0`.
+- `middle`: Comment string to use on the middle lines. If `margin` is set to
+  `0`, this will be used on all lines.
+- `suffix`: Comment string to use on the last line. Unused if `margin` is set to
+  `0`.
+
 ## License
 
 This project is licensed under the Zlib License. See the [LICENSE](LICENSE)

doc/licenser.txt

@@ -58,6 +58,7 @@ vim-licenser supports the following filetypes with appropriate comment styles:
 
     bash          - Shell script
     c             - C language
+    cmake         - CMake Build Script
     cpp           - C++
     csharp        - C#
     css           - Cascading Style Sheets
@@ -82,6 +83,7 @@ vim-licenser supports the following filetypes with appropriate comment styles:
     shell         - Shell script
     sql           - SQL
     swift         - Swift
+    text          - Plain text
     typescript    - TypeScript
     typescriptreact - TypeScript React (TSX)
     vim           - Vim script

plugin/licenser.vim

@@ -69,6 +69,7 @@ function! s:GetCommentStyle(filetype) abort
 		\ 'shell': {'margin': 0, 'hashbang': 1, 'prefix': '', 'middle': '#', 'suffix': ''},
 		\ 'sql': {'margin': 1, 'hashbang': 0, 'prefix': '/*', 'middle': ' *', 'suffix': ' */'},
 		\ 'swift': {'margin': 1, 'hashbang': 0, 'prefix': '/*', 'middle': ' *', 'suffix': ' */'},
+		\ 'text': {'margin': 0, 'hashbang': 0, 'prefix': '', 'middle': '', 'suffix': ''},
 		\ 'typescript': {'margin': 1, 'hashbang': 0, 'prefix': '/*', 'middle': ' *', 'suffix': ' */'},
 		\ 'typescriptreact': {'margin': 1, 'hashbang': 0, 'prefix': '/*', 'middle': ' *', 'suffix': ' */'},
 		\ 'vim': {'margin': 0, 'hashbang': 0, 'prefix': '', 'middle': '"', 'suffix': ''},