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Update code that recognizes missing pymentize to modern golang; add solution message

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This commit is contained in:
Oliver Steele 2021-06-18 14:49:52 +08:00
parent 1cded6031f
commit 831ea531a1
1 changed files with 5 additions and 3 deletions
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8
tags/highlight.go
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@ -4,8 +4,10 @@ import (
"bytes"
"fmt"
"html"
"io/fs"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
@ -48,12 +50,12 @@ func highlightTag(rc render.Context) (string, error) {
}
return buf.String(), nil
})
if e, ok := err.(*exec.Error); ok {
if e.Err == exec.ErrNotFound {
if pathErr, ok := err.(*fs.PathError); ok {
if filepath.Base(pathErr.Path) == pygmentizeCmd {
r, err = `<code>`+html.EscapeString(s)+`</code>`, nil
if !warnedMissingPygmentize {
warnedMissingPygmentize = true
_, err = fmt.Fprintf(os.Stdout, "%s\nThe {%% highlight %%} tag will use <code>…</code> instead\n", err)
_, err = fmt.Fprintf(os.Stdout, "Error: %s\nRun `pip install Pygments` to install %s.\nThe {%% highlight %%} tag will use <code>…</code> instead\n", pathErr, pygmentizeCmd)
}
}
}