This crate justifies plaintext for display in a terminal emulator in a (mostly) Unicode friendly way.
Examples of use can be found in the file tests/tests.rs.
If the crate is compiled with the unicode-width feature (e.g. via cargo build --features unicode-width), Unicode is handled gracefully. With this feature, a
CJK character such as 한 takes two spaces, while combining characters take 0.
Without this feature, every Unicode character takes one space, which can lead to
poor output in some cases. If you will only ever justify ASCII text, or
NFC-normalized Unicode text of Latin languages, you don't need the feature.
The width information is provided by the wcwidth crate.
Without unicode-width (example text from
here):
"Korea" is the modern spelling of "Corea", a name attested in English as early
as 1614.[citation needed] Korea was transliterated as Cauli in The Travels of
Marco Polo,[10] based on the kingdom of Goryeo (Hangul: 고려; Hanja: 高麗;
MR: Koryŏ), which ruled most of the Korean peninsula during Marco Polo's time.
Korea's introduction to the West resulted from trade and contact with merchants
from Arabic lands,[11] with some records dating back as far as the 9th
century.[12] Goryeo's name was a continuation of Goguryeo (Koguryŏ) the
northernmost of the Three Kingdoms of Korea, which was officially known as
Goryeo beginning in the 5th century.[13] The original name was a combination of
the adjective go ("high, lofty") with the name of a local Yemaek tribe, whose
original name is thought to have been either *Guru (溝樓, "walled city,"
inferred from some toponyms in Chinese historical documents) or *Gauri
(가우리, "center").
With unicode-width and wcwidth: true in Settings struct:
"Korea" is the modern spelling of "Corea", a name attested in English as early
as 1614.[citation needed] Korea was transliterated as Cauli in The Travels of
Marco Polo,[10] based on the kingdom of Goryeo (Hangul: 고려; Hanja: 高麗; MR:
Koryŏ), which ruled most of the Korean peninsula during Marco Polo's time.
Korea's introduction to the West resulted from trade and contact with merchants
from Arabic lands,[11] with some records dating back as far as the 9th
century.[12] Goryeo's name was a continuation of Goguryeo (Koguryŏ) the
northernmost of the Three Kingdoms of Korea, which was officially known as
Goryeo beginning in the 5th century.[13] The original name was a combination of
the adjective go ("high, lofty") with the name of a local Yemaek tribe, whose
original name is thought to have been either *Guru (溝樓, "walled city,"
inferred from some toponyms in Chinese historical documents) or *Gauri (가우리,
"center").
Notice that the justification is better with unicode-width, but there are
still lines where the justification is one off. That's because it's not always
possible to justify perfectly: as Korean characters take two terminal spaces,
and Latin letters take one, it's possible for there to be an odd number of
characters on a line to be justified. Also, depending on your browser, it may
not look right, try pasting it into a terminal emulator.