Timeline for Colored string in mode line
Current License: CC BY-SA 4.0
6 events
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| Jul 25, 2020 at 18:15 | comment | added | Drew |
@Fólkvangr: Yes, I know. And? If you can modify something then it's mutable. But all of this is extraneous. If you prefer, read "Suppose that the value of ss is a string", instead of the setq. The point of the answer is that you can use add-face-text-property to add color to a string.
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| Jul 25, 2020 at 17:19 | comment | added | user19761 |
@Drew: copy-sequence allows to create a mutable string (c.f. Elisp manual version 27, section 2.9 Mutability). In your sample code, add-face-text-property modifies a literal string.
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| Jul 25, 2020 at 16:15 | comment | added | Drew |
@Fólkvangr: Depends on what behavior you want. Do you want to modify a copy of the original string or the original string? The example of using a literal string here is also for brevity - who knows where the actual original string comes from? But if the intention is to modify the original string, then you don't want to use copy-sequence.
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| Jul 25, 2020 at 11:42 | comment | added | user19761 |
You should not try to modify a literal string: (setq ss (copy-sequence "abcde")).
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| Jul 23, 2020 at 21:08 | comment | added | Gabriele | That's good to know. Thanks. | |
| Jul 23, 2020 at 16:17 | history | answered | Drew | CC BY-SA 4.0 |